Issue with compiling for stm32f4

[yashwanthsinghm]

I have been working on embassy for stm32, i have cloned the lastest repository but facing compiling issue with it. Below are the logs, could you tell me what is that i need to update.

1)Tool chain log

Default host: x86_64-apple-darwin
rustup home:  /Users/yashwanthsingh/.rustup

installed toolchains
--------------------

stable-x86_64-apple-darwin
nightly-2021-11-15-x86_64-apple-darwin
nightly-2022-09-18-x86_64-apple-darwin
nightly-2022-11-22-x86_64-apple-darwin
nightly-2023-02-07-x86_64-apple-darwin
nightly-x86_64-apple-darwin (default)
1.61-x86_64-apple-darwin

installed targets for active toolchain
--------------------------------------

thumbv6m-none-eabi
thumbv7em-none-eabi
thumbv7em-none-eabihf
thumbv7m-none-eabi
thumbv8m.main-none-eabihf
wasm32-unknown-unknown
x86_64-apple-darwin

active toolchain
----------------

nightly-2023-02-07-x86_64-apple-darwin (overridden by '/Users/yashwanthsingh/Yash/Projects/async/Embassy/git_embassyrust/embassy/rust-toolchain.toml')
rustc 1.69.0-nightly (e1eaa2d5d 2023-02-06)

2)error logs

yashwanthsingh@Yashwanths-MacBook-Pro stm32f4 % cargo build --bin blinky
    Updating crates.io index
  Downloaded stm32-metapac v2.0.0
  Downloaded 1 crate (5.1 MB) in 5.79s
   Compiling bitflags v1.3.2
   Compiling stable_deref_trait v1.2.0
   Compiling critical-section v1.1.1
   Compiling proc-macro2 v1.0.54
   Compiling proc-macro-error-attr v1.0.4
   Compiling proc-macro-error v1.0.4
   Compiling semver v1.0.17
   Compiling nb v1.1.0
   Compiling semver v0.9.0
   Compiling futures-core v0.3.27
   Compiling byteorder v1.4.3
   Compiling futures-task v0.3.27
error[E0463]: can't find crate for `core`
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `compiler_builtins`

error[E0405]: cannot find trait `Clone` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:129:50
    |
129 | pub unsafe trait CloneStableDeref: StableDeref + Clone {}
    |                                                  ^^^^^ not found in this scope

error[E0463]: can't find crate for `core`
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/bitflags-1.3.2/src/lib.rs:282:1
    |
282 | pub extern crate core as _core;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
    |
    = note: the `thumbv7em-none-eabi` target may not be installed
    = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:178:21
    |
178 | unsafe impl<'a, T: ?Sized> StableDeref for Ref<'a, T> {}
    |                     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:179:21
    |
179 | unsafe impl<'a, T: ?Sized> StableDeref for RefMut<'a, T> {}
    |                     ^^^^^ not found in this scope

For more information about this error, try `rustc --explain E0463`.
error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:187:21
    |
187 | unsafe impl<'a, T: ?Sized> StableDeref for &'a T {}
    |                     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:188:21
    |
188 | unsafe impl<'a, T: ?Sized> CloneStableDeref for &'a T {}
    |                     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:189:21
    |
189 | unsafe impl<'a, T: ?Sized> StableDeref for &'a mut T {}
    |                     ^^^^^ not found in this scope

Some errors have detailed explanations: E0405, E0463.
For more information about an error, try `rustc --explain E0405`.
error: could not compile `stable_deref_trait` due to 8 previous errors
warning: build failed, waiting for other jobs to finish...
error: could not compile `bitflags` due to 3 previous errors
error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:2:5
  |
2 | use core::cell::{Ref, RefCell, RefMut, UnsafeCell};
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:8:5
  |
8 | use core::marker::PhantomData;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find attribute `derive` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:121:3
    |
121 | #[derive(Clone, Copy, Debug)]
    |   ^^^^^^

error: cannot find attribute `derive` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:16:3
   |
16 | #[derive(Clone, Copy, Debug)]
   |   ^^^^^^

error: cannot find attribute `derive` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:52:3
   |
52 | #[derive(Debug)]
   |   ^^^^^^

error: cannot find macro `include_str` in this scope
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:2:10
  |
2 | #![doc = include_str!("../README.md")]
  |          ^^^^^^^^^^^

error[E0405]: cannot find trait `FnOnce` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:117:12
    |
117 |         F: FnOnce(&mut T) -> T,
    |            ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:151:9
    |
151 | impl<T: Default> Mutex<RefCell<T>> {
    |         ^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sync` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:170:16
    |
170 | unsafe impl<T> Sync for Mutex<T> where T: Send {}
    |                ^^^^ not found in this scope

error[E0463]: can't find crate for `core`
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:192:5
    |
192 | use core::fmt;
    |     ^^^^ can't find crate
    |
    = note: the `thumbv7em-none-eabi` target may not be installed
    = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `Send` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:170:43
    |
170 | unsafe impl<T> Sync for Mutex<T> where T: Send {}
    |                                           ^^^^ not found in this scope

error: cannot find attribute `derive` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:201:3
    |
201 | #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
    |   ^^^^^^

error[E0463]: can't find crate for `core`
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:195:27
    |
195 | pub type Result<T, E> = ::core::result::Result<T, Error<E>>;
    |                           ^^^^ can't find crate
    |
    = note: the `thumbv7em-none-eabi` target may not be installed
    = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `FnOnce` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:210:24
    |
210 | pub fn with<R>(f: impl FnOnce(CriticalSection) -> R) -> R {
    |                        ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Drop` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:216:10
    |
216 |     impl Drop for Guard {
    |          ^^^^ not found in this scope

error[E0405]: cannot find trait `FnOnce` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:239:12
    |
239 |         F: FnOnce(E) -> T,
    |            ^^^^^^ not found in this scope

error[E0405]: cannot find trait `From` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:248:9
    |
248 | impl<E> From<E> for Error<E> {
    |         ^^^^ not found in this scope

error: could not compile `nb` due to 7 previous errors
error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:73:5
   |
73 | use core::{
   |     ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find attribute `derive` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1806:3
     |
1806 | #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
     |   ^^^^^^

error: cannot find macro `panic` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1811:9
     |
1811 |         panic!("BigEndian default")
     |         ^^^^^

error: cannot find attribute `derive` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1836:3
     |
1836 | #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
     |   ^^^^^^

error: cannot find macro `panic` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1841:9
     |
1841 |         panic!("LittleEndian default")
     |         ^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1993:9
     |
1993 |         assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2008:9
     |
2008 |         assert!(1 <= nbytes && nbytes <= 16 && nbytes <= buf.len());
     |         ^^^^^^

error: could not compile `critical-section` due to 14 previous errors
error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2023 |         unsafe_write_num_bytes!(u16, 2, n, buf, to_be);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2028 |         unsafe_write_num_bytes!(u32, 4, n, buf, to_be);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2033 |         unsafe_write_num_bytes!(u64, 8, n, buf, to_be);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2038 |         unsafe_write_num_bytes!(u128, 16, n, buf, to_be);
     |         ------------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2043:9
     |
2043 |         assert!(pack_size(n) <= nbytes && nbytes <= 8);
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2044:9
     |
2044 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2057:9
     |
2057 |         assert!(pack_size128(n) <= nbytes && nbytes <= 16);
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2058:9
     |
2058 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2071 |         unsafe_read_slice!(src, dst, 2, to_be);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2076 |         unsafe_read_slice!(src, dst, 4, to_be);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2081 |         unsafe_read_slice!(src, dst, 8, to_be);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2086 |         unsafe_read_slice!(src, dst, 16, to_be);
     |         --------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2091:12
     |
2091 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2092 |             unsafe_write_slice_native!(src, dst, u16);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2094 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2094 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2100:12
     |
2100 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2101 |             unsafe_write_slice_native!(src, dst, u32);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2103 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2103 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2109:12
     |
2109 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2110 |             unsafe_write_slice_native!(src, dst, u64);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2112 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2112 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2118:12
     |
2118 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2119 |             unsafe_write_slice_native!(src, dst, u128);
     |             ------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2121 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2121 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2127:12
     |
2127 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2136:12
     |
2136 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2145:12
     |
2145 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2154:12
     |
2154 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2163:12
     |
2163 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2175:12
     |
2175 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2209:9
     |
2209 |         assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2220:9
     |
2220 |         assert!(1 <= nbytes && nbytes <= 16 && nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2231 |         unsafe_write_num_bytes!(u16, 2, n, buf, to_le);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2236 |         unsafe_write_num_bytes!(u32, 4, n, buf, to_le);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2241 |         unsafe_write_num_bytes!(u64, 8, n, buf, to_le);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2246 |         unsafe_write_num_bytes!(u128, 16, n, buf, to_le);
     |         ------------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2251:9
     |
2251 |         assert!(pack_size(n as u64) <= nbytes && nbytes <= 8);
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2252:9
     |
2252 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2261:9
     |
2261 |         assert!(pack_size128(n as u128) <= nbytes && nbytes <= 16);
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2262:9
     |
2262 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2271 |         unsafe_read_slice!(src, dst, 2, to_le);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2276 |         unsafe_read_slice!(src, dst, 4, to_le);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2281 |         unsafe_read_slice!(src, dst, 8, to_le);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2286 |         unsafe_read_slice!(src, dst, 16, to_le);
     |         --------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2291:12
     |
2291 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2292 |             unsafe_write_slice_native!(src, dst, u16);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2294 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2294 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2300:12
     |
2300 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2301 |             unsafe_write_slice_native!(src, dst, u32);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2303 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2303 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2309:12
     |
2309 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2310 |             unsafe_write_slice_native!(src, dst, u64);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2312 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2312 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2318:12
     |
2318 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2319 |             unsafe_write_slice_native!(src, dst, u128);
     |             ------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2321 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2321 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2327:12
     |
2327 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2336:12
     |
2336 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2345:12
     |
2345 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2354:12
     |
2354 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2363:12
     |
2363 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2375:12
     |
2375 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error[E0463]: can't find crate for `core`
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1946:20
     |
1946 |         let size = core::mem::size_of::<$ty>();
     |                    ^^^^ can't find crate
     |
     = note: the `thumbv7em-none-eabi` target may not be installed
     = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `Clone` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:209:5
    |
209 |     Clone
    |     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Copy` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:210:7
    |
210 |     + Copy
    |       ^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:212:7
    |
212 |     + Default
    |       ^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Eq` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:213:7
    |
213 |     + Eq
    |       ^^ not found in this scope

error[E0405]: cannot find trait `Ord` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:215:7
    |
215 |     + Ord
    |       ^^^ not found in this scope

error[E0405]: cannot find trait `PartialEq` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:216:7
    |
216 |     + PartialEq
    |       ^^^^^^^^^ not found in this scope

error[E0405]: cannot find trait `PartialOrd` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:217:7
    |
217 |     + PartialOrd
    |       ^^^^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1809:6
     |
1809 | impl Default for BigEndian {
     |      ^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1839:6
     |
1839 | impl Default for LittleEndian {
     |      ^^^^^^^ not found in this scope

error: could not compile `byteorder` due to 89 previous errors

[Dirbaio]

try running rustup target add thumbv7em-none-eabi. You have to do it on the exact nightly that Embassy uses, for example from some directory under the Embassy repo so that rust-toolchain.toml applies.

Though the rustup output you paste already indicates that's installed I think? If that's the case and it still doesn't work, perhaps something about rustup got corrupted, try removing ~/.rustup and installing everything again.

[yashwanthsinghm]

@Dirbaio i uninstalled and reinstalled rustup still the compilation error, also i have restarted the machine. status of installation: rustup : rustc 1.70.0-nightly gitpull : latest pull

Or you facing the same issue ? or your able to compile? Any steps should i follow to install anything other than this?

yashwanthsingh@Yashwanths-MacBook-Pro ~ % rustup show
Default host: x86_64-apple-darwin
rustup home:  /Users/yashwanthsingh/.rustup

installed toolchains
--------------------

stable-x86_64-apple-darwin
nightly-x86_64-apple-darwin (default)

installed targets for active toolchain
--------------------------------------

thumbv6m-none-eabi
thumbv7em-none-eabi
thumbv7em-none-eabihf
thumbv7m-none-eabi
thumbv8m.main-none-eabihf
wasm32-unknown-unknown
x86_64-apple-darwin

active toolchain
----------------

nightly-x86_64-apple-darwin (default)
rustc 1.70.0-nightly (af06dce64 2023-04-08)

2)errror logs

yashwanthsingh@Yashwanths-MacBook-Pro stm32f4 % cargo build --bin blinky
   Compiling bitflags v1.3.2
   Compiling stable_deref_trait v1.2.0
   Compiling critical-section v1.1.1
   Compiling nb v1.1.0
   Compiling byteorder v1.4.3
   Compiling futures-core v0.3.27
   Compiling void v1.0.2
   Compiling futures-sink v0.3.27
   Compiling futures-task v0.3.27
   Compiling pin-utils v0.1.0
   Compiling pin-project-lite v0.2.9
   Compiling embassy-sync v0.1.0 (/Users/yashwanthsingh/Yash/Projects/async/Embassy/git_embassyrust/embassy/embassy-sync)
error[E0463]: can't find crate for `core`
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `compiler_builtins`

error[E0463]: can't find crate for `core`
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/bitflags-1.3.2/src/lib.rs:282:1
    |
282 | pub extern crate core as _core;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
    |
    = note: the `thumbv7em-none-eabi` target may not be installed
    = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `Clone` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:129:50
    |
129 | pub unsafe trait CloneStableDeref: StableDeref + Clone {}
    |                                                  ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:178:21
    |
178 | unsafe impl<'a, T: ?Sized> StableDeref for Ref<'a, T> {}
    |                     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:179:21
    |
179 | unsafe impl<'a, T: ?Sized> StableDeref for RefMut<'a, T> {}
    |                     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:187:21
    |
187 | unsafe impl<'a, T: ?Sized> StableDeref for &'a T {}
    |                     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:188:21
    |
188 | unsafe impl<'a, T: ?Sized> CloneStableDeref for &'a T {}
    |                     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/stable_deref_trait-1.2.0/src/lib.rs:189:21
    |
189 | unsafe impl<'a, T: ?Sized> StableDeref for &'a mut T {}
    |                     ^^^^^ not found in this scope

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:2:5
  |
2 | use core::cell::{Ref, RefCell, RefMut, UnsafeCell};
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:192:5
    |
192 | use core::fmt;
    |     ^^^^ can't find crate
    |
    = note: the `thumbv7em-none-eabi` target may not be installed
    = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find attribute `derive` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:201:3
    |
201 | #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
    |   ^^^^^^

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:8:5
  |
8 | use core::marker::PhantomData;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find attribute `derive` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:121:3
    |
121 | #[derive(Clone, Copy, Debug)]
    |   ^^^^^^

error: cannot find attribute `derive` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:16:3
   |
16 | #[derive(Clone, Copy, Debug)]
   |   ^^^^^^

error: cannot find attribute `derive` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:52:3
   |
52 | #[derive(Debug)]
   |   ^^^^^^

error: cannot find macro `include_str` in this scope
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:2:10
  |
2 | #![doc = include_str!("../README.md")]
  |          ^^^^^^^^^^^

error[E0463]: can't find crate for `core`
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:195:27
    |
195 | pub type Result<T, E> = ::core::result::Result<T, Error<E>>;
    |                           ^^^^ can't find crate
    |
    = note: the `thumbv7em-none-eabi` target may not be installed
    = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

Some errors have detailed explanations: E0405, E0463.
For more information about an error, try `rustc --explain E0405`.
For more information about this error, try `rustc --explain E0463`.
error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:16:5
   |
16 |     extern crate core;
   |     ^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find attribute `derive` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:28:3
   |
28 | #[derive(Copy)]
   |   ^^^^^^

error[E0405]: cannot find trait `FnOnce` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:239:12
    |
239 |         F: FnOnce(E) -> T,
    |            ^^^^^^ not found in this scope

error[E0405]: cannot find trait `From` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/nb-1.1.0/src/lib.rs:248:9
    |
248 | impl<E> From<E> for Error<E> {
    |         ^^^^ not found in this scope

error: could not compile `bitflags` due to 3 previous errors
warning: build failed, waiting for other jobs to finish...
error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:21:5
   |
21 | use core::ops::DerefMut;
   |     ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:22:5
   |
22 | use core::pin::Pin;
   |     ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: could not compile `stable_deref_trait` due to 8 previous errors
error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-utils-0.1.0/src/lib.rs:11:13
   |
11 |     pub use core::*;
   |             ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:23:5
   |
23 | use core::task::{Context, Poll};
   |     ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:3:5
  |
3 | use core::ops::DerefMut;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:4:5
  |
4 | use core::pin::Pin;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:5:5
  |
5 | use core::task::{Context, Poll};
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `FnOnce` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:117:12
    |
117 |         F: FnOnce(&mut T) -> T,
    |            ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:151:9
    |
151 | impl<T: Default> Mutex<RefCell<T>> {
    |         ^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sync` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:170:16
    |
170 | unsafe impl<T> Sync for Mutex<T> where T: Send {}
    |                ^^^^ not found in this scope

error[E0405]: cannot find trait `Send` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/mutex.rs:170:43
    |
170 | unsafe impl<T> Sync for Mutex<T> where T: Send {}
    |                                           ^^^^ not found in this scope

error[E0405]: cannot find trait `FnOnce` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:210:24
    |
210 | pub fn with<R>(f: impl FnOnce(CriticalSection) -> R) -> R {
    |                        ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Drop` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/critical-section-1.1.1/src/lib.rs:216:10
    |
216 |     impl Drop for Guard {
    |          ^^^^ not found in this scope

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:8:9
  |
8 | pub use core::future::Future;
  |         ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: could not compile `nb` due to 7 previous errors
error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:3:5
  |
3 | use core::ops::DerefMut;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:4:5
  |
4 | use core::pin::Pin;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `Clone` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:31:6
   |
31 | impl Clone for Void {
   |      ^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:56:37
   |
56 |     fn partial_cmp(&self, _: &T) -> Option<cmp::Ordering> {
   |                                     ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:85:29
   |
85 | pub trait ResultVoidExt<T>: Sized {
   |                             ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:90:30
   |
90 | impl<T> ResultVoidExt<T> for Result<T, Void> {
   |                              ^^^^^^ not found in this scope

error[E0531]: cannot find tuple struct or tuple variant `Ok` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:97:13
   |
97 |             Ok(val) => val,
   |             ^^ not found in this scope

error[E0531]: cannot find tuple struct or tuple variant `Err` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:98:13
   |
98 |             Err(e) => unreachable(e)
   |             ^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:104:32
    |
104 | pub trait ResultVoidErrExt<E>: Sized {
    |                                ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:109:33
    |
109 | impl<E> ResultVoidErrExt<E> for Result<Void, E> {
    |                                 ^^^^^^ not found in this scope

error[E0531]: cannot find tuple struct or tuple variant `Ok` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:116:13
    |
116 |             Ok(v) => unreachable(v),
    |             ^^ not found in this scope

error[E0531]: cannot find tuple struct or tuple variant `Err` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/void-1.0.2/src/lib.rs:117:13
    |
117 |             Err(e) => e
    |             ^^^ not found in this scope

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:5:5
  |
5 | use core::task::{Context, Poll};
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:1:5
  |
1 | use core::cell::UnsafeCell;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:2:5
  |
2 | use core::fmt;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:3:5
  |
3 | use core::task::Waker;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:12:5
   |
12 | use core::sync::atomic;
   |     ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/mod.rs:10:9
   |
10 | pub use core::task::{Context, Poll, RawWaker, RawWakerVTable, Waker};
   |         ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:73:5
   |
73 | use core::{
   |     ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: could not compile `pin-utils` due to 3 previous errors
Some errors have detailed explanations: E0405, E0412, E0463, E0531.
error[E0432]: unresolved imports `super::Future`, `self::future::Future`, `atomic::AtomicUsize`, `atomic::Ordering::AcqRel`, `atomic::Ordering::Acquire`, `atomic::Ordering::Release`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/lib.rs:20:37
   |
20 | pub use self::future::{FusedFuture, Future, TryFuture};
   |                                     ^^^^^^
   |
  ::: /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:49:9
   |
49 |     use super::Future;
   |         ^^^^^^^^^^^^^
   |
  ::: /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:5:5
   |
5  | use atomic::AtomicUsize;
   |     ^^^^^^^^^^^^^^^^^^^
6  | use atomic::Ordering::{AcqRel, Acquire, Release};
   |                        ^^^^^^  ^^^^^^^  ^^^^^^^

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:2:5
  |
2 | use core::fmt;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find attribute `derive` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1806:3
     |
1806 | #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
     |   ^^^^^^

error: cannot find macro `write` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:411:9
    |
411 |         write!(f, "AtomicWaker")
    |         ^^^^^

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:1:5
  |
1 | use core::{
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find macro `panic` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1811:9
     |
1811 |         panic!("BigEndian default")
     |         ^^^^^

error[E0463]: can't find crate for `core`
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-lite-0.2.9/src/lib.rs:1503:9
     |
1503 |     use core::mem::ManuallyDrop;
     |         ^^^^ can't find crate
     |
     = note: the `thumbv7em-none-eabi` target may not be installed
     = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find macro `debug_assert_eq` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:301:29
    |
301 | ...                   debug_assert_eq!(actual, REGISTERING | WAKING);
    |                       ^^^^^^^^^^^^^^^

error: cannot find macro `debug_assert` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:350:17
    |
350 |                 debug_assert!(state == REGISTERING || state == REGISTERING | WAKING);
    |                 ^^^^^^^^^^^^

error: cannot find attribute `derive` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1836:3
     |
1836 | #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
     |   ^^^^^^

error[E0463]: can't find crate for `core`
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-lite-0.2.9/src/lib.rs:1505:13
     |
1505 |     pub use core::{
     |             ^^^^ can't find crate
     |
     = note: the `thumbv7em-none-eabi` target may not be installed
     = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find macro `panic` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1841:9
     |
1841 |         panic!("LittleEndian default")
     |         ^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1993:9
     |
1993 |         assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2008:9
     |
2008 |         assert!(1 <= nbytes && nbytes <= 16 && nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2023 |         unsafe_write_num_bytes!(u16, 2, n, buf, to_be);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `debug_assert` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:394:17
    |
394 |                 debug_assert!(
    |                 ^^^^^^^^^^^^

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/noop_waker.rs:3:5
  |
3 | use core::ptr::null;
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0463]: can't find crate for `core`
 --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/noop_waker.rs:4:5
  |
4 | use core::task::{RawWaker, RawWakerVTable, Waker};
  |     ^^^^ can't find crate
  |
  = note: the `thumbv7em-none-eabi` target may not be installed
  = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: could not compile `critical-section` due to 14 previous errors
error: could not compile `void` due to 14 previous errors
error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2028 |         unsafe_write_num_bytes!(u32, 4, n, buf, to_be);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0463]: can't find crate for `core`
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/lib.rs:50:9
   |
50 | pub use core::task::{Context, Poll, RawWaker, RawWakerVTable, Waker};
   |         ^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not be installed
   = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2033 |         unsafe_write_num_bytes!(u64, 8, n, buf, to_be);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2038 |         unsafe_write_num_bytes!(u128, 16, n, buf, to_be);
     |         ------------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2043:9
     |
2043 |         assert!(pack_size(n) <= nbytes && nbytes <= 8);
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2044:9
     |
2044 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2057:9
     |
2057 |         assert!(pack_size128(n) <= nbytes && nbytes <= 16);
     |         ^^^^^^

error: cannot find macro `write` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:67:9
   |
67 |         write!(f, "Executor is shutdown")
   |         ^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2058:9
     |
2058 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2071 |         unsafe_read_slice!(src, dst, 2, to_be);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2076 |         unsafe_read_slice!(src, dst, 4, to_be);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2081 |         unsafe_read_slice!(src, dst, 8, to_be);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2086 |         unsafe_read_slice!(src, dst, 16, to_be);
     |         --------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2091:12
     |
2091 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2092 |             unsafe_write_slice_native!(src, dst, u16);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2094 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2094 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2100:12
     |
2100 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error[E0405]: cannot find trait `Sized` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-lite-0.2.9/src/lib.rs:1514:32
     |
1514 |     pub struct AlwaysUnpin<T: ?Sized>(PhantomData<T>);
     |                                ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-lite-0.2.9/src/lib.rs:1516:14
     |
1516 |     impl<T: ?Sized> Unpin for AlwaysUnpin<T> {}
     |              ^^^^^ not found in this scope

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2101 |             unsafe_write_slice_native!(src, dst, u32);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0405]: cannot find trait `Sized` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-lite-0.2.9/src/lib.rs:1520:43
     |
1520 |     pub struct UnsafeDropInPlaceGuard<T: ?Sized>(*mut T);
     |                                           ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-lite-0.2.9/src/lib.rs:1522:14
     |
1522 |     impl<T: ?Sized> UnsafeDropInPlaceGuard<T> {
     |              ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-lite-0.2.9/src/lib.rs:1529:14
     |
1529 |     impl<T: ?Sized> Drop for UnsafeDropInPlaceGuard<T> {
     |              ^^^^^ not found in this scope

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2103 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2103 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2109:12
     |
2109 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2110 |             unsafe_write_slice_native!(src, dst, u64);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2112 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2112 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2118:12
     |
2118 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2119 |             unsafe_write_slice_native!(src, dst, u128);
     |             ------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2121 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2121 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2127:12
     |
2127 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2136:12
     |
2136 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2145:12
     |
2145 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2154:12
     |
2154 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2163:12
     |
2163 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2175:12
     |
2175 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2209:9
     |
2209 |         assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2220:9
     |
2220 |         assert!(1 <= nbytes && nbytes <= 16 && nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2231 |         unsafe_write_num_bytes!(u16, 2, n, buf, to_le);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2236 |         unsafe_write_num_bytes!(u32, 4, n, buf, to_le);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2241 |         unsafe_write_num_bytes!(u64, 8, n, buf, to_le);
     |         ---------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1906:9
     |
1906 |         assert!($size <= $dst.len());
     |         ^^^^^^
...
2246 |         unsafe_write_num_bytes!(u128, 16, n, buf, to_le);
     |         ------------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_num_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2251:9
     |
2251 |         assert!(pack_size(n as u64) <= nbytes && nbytes <= 8);
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2252:9
     |
2252 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2261:9
     |
2261 |         assert!(pack_size128(n as u128) <= nbytes && nbytes <= 16);
     |         ^^^^^^

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:68:71
   |
68 |     fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;
   |                                                                       ^^^^^^ not found in this scope

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2262:9
     |
2262 |         assert!(nbytes <= buf.len());
     |         ^^^^^^

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:89:56
   |
89 |     fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error>;
   |                                                        ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:103:71
    |
103 |     fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;
    |                                                                       ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:116:71
    |
116 |     fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;
    |                                                                       ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:119:10
    |
119 | impl<S: ?Sized + Sink<Item> + Unpin, Item> Sink<Item> for &mut S {
    |          ^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:119:31
    |
119 | impl<S: ?Sized + Sink<Item> + Unpin, Item> Sink<Item> for &mut S {
    |                               ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:122:75
    |
122 |     fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
    |                                                                           ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:126:60
    |
126 |     fn start_send(mut self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {
    |                                                            ^^^^^^ not found in this scope

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2271 |         unsafe_read_slice!(src, dst, 2, to_le);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:130:75
    |
130 |     fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
    |                                                                           ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:134:75
    |
134 |     fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
    |                                                                           ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:141:19
    |
141 |     P: DerefMut + Unpin,
    |                   ^^^^^ not found in this scope

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2276 |         unsafe_read_slice!(src, dst, 4, to_le);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:146:71
    |
146 |     fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
    |                                                                       ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:150:56
    |
150 |     fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {
    |                                                        ^^^^^^ not found in this scope

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2281 |         unsafe_read_slice!(src, dst, 8, to_le);
     |         -------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:154:71
    |
154 |     fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
    |                                                                       ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-sink-0.3.27/src/lib.rs:158:71
    |
158 |     fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
    |                                                                       ^^^^^^ not found in this scope

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1923:9
     |
1923 |         assert_eq!($src.len(), $size * $dst.len());
     |         ^^^^^^^^^
...
2286 |         unsafe_read_slice!(src, dst, 16, to_le);
     |         --------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_read_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2291:12
     |
2291 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2292 |             unsafe_write_slice_native!(src, dst, u16);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2294 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2294 |             write_slice!(src, dst, u16, 2, Self::write_u16);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2300:12
     |
2300 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: could not compile `pin-project-lite` due to 9 previous errors
error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2301 |             unsafe_write_slice_native!(src, dst, u32);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2303 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2303 |             write_slice!(src, dst, u32, 4, Self::write_u32);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2309:12
     |
2309 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2310 |             unsafe_write_slice_native!(src, dst, u64);
     |             ----------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2312 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2312 |             write_slice!(src, dst, u64, 8, Self::write_u64);
     |             ----------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2318:12
     |
2318 |         if cfg!(target_endian = "little") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1947:9
     |
1947 |         assert_eq!(size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2319 |             unsafe_write_slice_native!(src, dst, u128);
     |             ------------------------------------------ in this macro invocation
     |
     = note: this error originates in the macro `unsafe_write_slice_native` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1961:9
     |
1961 |         assert!($size == ::core::mem::size_of::<$ty>());
     |         ^^^^^^
...
2321 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `assert_eq` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1962:9
     |
1962 |         assert_eq!($size * $src.len(), $dst.len());
     |         ^^^^^^^^^
...
2321 |             write_slice!(src, dst, u128, 16, Self::write_u128);
     |             -------------------------------------------------- in this macro invocation
     |
     = note: this error originates in the macro `write_slice` (in Nightly builds, run with -Z macro-backtrace for more info)

Some errors have detailed explanations: E0405, E0412, E0463.
error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2327:12
     |
2327 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2336:12
     |
2336 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2345:12
     |
2345 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2354:12
     |
2354 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2363:12
     |
2363 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: cannot find macro `cfg` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:2375:12
     |
2375 |         if cfg!(target_endian = "big") {
     |            ^^^
     |
     = note: `cfg` is in scope, but it is an attribute: `#[cfg]`

error: could not compile `futures-sink` due to 20 previous errors
error[E0463]: can't find crate for `core`
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1946:20
     |
1946 |         let size = core::mem::size_of::<$ty>();
     |                    ^^^^ can't find crate
     |
     = note: the `thumbv7em-none-eabi` target may not be installed
     = help: consider downloading the target with `rustup target add thumbv7em-none-eabi`

error[E0405]: cannot find trait `Clone` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:209:5
    |
209 |     Clone
    |     ^^^^^ not found in this scope

error[E0405]: cannot find trait `Copy` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:210:7
    |
210 |     + Copy
    |       ^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:212:7
    |
212 |     + Default
    |       ^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Eq` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:213:7
    |
213 |     + Eq
    |       ^^ not found in this scope

error[E0405]: cannot find trait `Ord` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:215:7
    |
215 |     + Ord
    |       ^^^ not found in this scope

error[E0405]: cannot find trait `PartialEq` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:216:7
    |
216 |     + PartialEq
    |       ^^^^^^^^^ not found in this scope

error[E0405]: cannot find trait `PartialOrd` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:217:7
    |
217 |     + PartialOrd
    |       ^^^^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1809:6
     |
1809 | impl Default for BigEndian {
     |      ^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
    --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/lib.rs:1839:6
     |
1839 | impl Default for LittleEndian {
     |      ^^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:15:60
   |
15 |     fn spawn_obj(&self, future: FutureObj<'static, ()>) -> Result<(), SpawnError>;
   |                                                            ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:24:25
   |
24 |     fn status(&self) -> Result<(), SpawnError> {
   |                         ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:40:71
   |
40 |     fn spawn_local_obj(&self, future: LocalFutureObj<'static, ()>) -> Result<(), SpawnError>;
   |                                                                       ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:49:31
   |
49 |     fn status_local(&self) -> Result<(), SpawnError> {
   |                               ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:86:11
   |
86 | impl<Sp: ?Sized + Spawn> Spawn for &Sp {
   |           ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:87:60
   |
87 |     fn spawn_obj(&self, future: FutureObj<'static, ()>) -> Result<(), SpawnError> {
   |                                                            ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:91:25
   |
91 |     fn status(&self) -> Result<(), SpawnError> {
   |                         ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:96:11
   |
96 | impl<Sp: ?Sized + Spawn> Spawn for &mut Sp {
   |           ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:97:60
   |
97 |     fn spawn_obj(&self, future: FutureObj<'static, ()>) -> Result<(), SpawnError> {
   |                                                            ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:101:25
    |
101 |     fn status(&self) -> Result<(), SpawnError> {
    |                         ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:106:11
    |
106 | impl<Sp: ?Sized + LocalSpawn> LocalSpawn for &Sp {
    |           ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:107:71
    |
107 |     fn spawn_local_obj(&self, future: LocalFutureObj<'static, ()>) -> Result<(), SpawnError> {
    |                                                                       ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:111:31
    |
111 |     fn status_local(&self) -> Result<(), SpawnError> {
    |                               ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:116:11
    |
116 | impl<Sp: ?Sized + LocalSpawn> LocalSpawn for &mut Sp {
    |           ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:117:71
    |
117 |     fn spawn_local_obj(&self, future: LocalFutureObj<'static, ()>) -> Result<(), SpawnError> {
    |                                                                       ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:121:31
    |
121 |     fn status_local(&self) -> Result<(), SpawnError> {
    |                               ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:25:9
   |
25 | impl<T> Unpin for LocalFutureObj<'_, T> {}
   |         ^^^^^ not found in this scope

error[E0405]: cannot find trait `From` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:72:13
   |
72 | impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T> {
   |             ^^^^ not found in this scope

error[E0405]: cannot find trait `Drop` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:88:9
   |
88 | impl<T> Drop for LocalFutureObj<'_, T> {
   |         ^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:105:9
    |
105 | impl<T> Unpin for FutureObj<'_, T> {}
    |         ^^^^^ not found in this scope

error[E0405]: cannot find trait `Send` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:106:16
    |
106 | unsafe impl<T> Send for FutureObj<'_, T> {}
    |                ^^^^ not found in this scope

error[E0405]: cannot find trait `Send` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:111:44
    |
111 |     pub fn new<F: UnsafeFutureObj<'a, T> + Send>(f: F) -> Self {
    |                                            ^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:178:29
    |
178 |     F: Future<Output = T> + Unpin + 'a,
    |                             ^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/future_obj.rs:187:81
    |
187 | unsafe impl<'a, T> UnsafeFutureObj<'a, T> for &'a mut (dyn Future<Output = T> + Unpin + 'a) {
    |                                                                                 ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sync` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/noop_waker.rs:47:17
   |
47 |     unsafe impl Sync for SyncRawWaker {}
   |                 ^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `Ok` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:25:9
   |
25 |         Ok(())
   |         ^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `Ok` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.27/src/spawn.rs:50:9
   |
50 |         Ok(())
   |         ^^ not found in this scope

Some errors have detailed explanations: E0405, E0412, E0425, E0463.
error: could not compile `futures-task` due to 35 previous errors
error[E0405]: cannot find trait `Sized` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:32:24
   |
32 | impl<F: FusedFuture + ?Sized + Unpin> FusedFuture for &mut F {
   |                        ^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:32:32
   |
32 | impl<F: FusedFuture + ?Sized + Unpin> FusedFuture for &mut F {
   |                                ^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:40:19
   |
40 |     P: DerefMut + Unpin,
   |                   ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:53:42
   |
53 |     impl<F, T, E> Sealed for F where F: ?Sized + Future<Output = Result<T, E>> {}
   |                                          ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:53:66
   |
53 |     impl<F, T, E> Sealed for F where F: ?Sized + Future<Output = Result<T, E>> {}
   |                                                                  ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:70:69
   |
70 |     fn try_poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<Self::Ok, Self::Error>>;
   |                                                                     ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:75:9
   |
75 |     F: ?Sized + Future<Output = Result<T, E>>,
   |         ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/future.rs:75:33
   |
75 |     F: ?Sized + Future<Output = Result<T, E>>,
   |                                 ^^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:66:70
   |
66 |     fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>;
   |                                                                      ^^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:95:36
   |
95 |     fn size_hint(&self) -> (usize, Option<usize>) {
   |                                    ^^^^^^ not found in this scope

error[E0425]: cannot find value `None` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:96:13
   |
96 |         (0, None)
   |             ^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:100:10
    |
100 | impl<S: ?Sized + Stream + Unpin> Stream for &mut S {
    |          ^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:100:27
    |
100 | impl<S: ?Sized + Stream + Unpin> Stream for &mut S {
    |                           ^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:103:74
    |
103 |     fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
    |                                                                          ^^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:107:36
    |
107 |     fn size_hint(&self) -> (usize, Option<usize>) {
    |                                    ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:114:19
    |
114 |     P: DerefMut + Unpin,
    |                   ^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:119:70
    |
119 |     fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
    |                                                                      ^^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:123:36
    |
123 |     fn size_hint(&self) -> (usize, Option<usize>) {
    |                                    ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:141:10
    |
141 | impl<F: ?Sized + FusedStream + Unpin> FusedStream for &mut F {
    |          ^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:141:32
    |
141 | impl<F: ?Sized + FusedStream + Unpin> FusedStream for &mut F {
    |                                ^^^^^ not found in this scope

error[E0405]: cannot find trait `Unpin` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:149:19
    |
149 |     P: DerefMut + Unpin,
    |                   ^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:162:42
    |
162 |     impl<S, T, E> Sealed for S where S: ?Sized + Stream<Item = Result<T, E>> {}
    |                                          ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:162:64
    |
162 |     impl<S, T, E> Sealed for S where S: ?Sized + Stream<Item = Result<T, E>> {}
    |                                                                ^^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:182:15
    |
182 |     ) -> Poll<Option<Result<Self::Ok, Self::Error>>>;
    |               ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:182:22
    |
182 |     ) -> Poll<Option<Result<Self::Ok, Self::Error>>>;
    |                      ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sized` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:187:9
    |
187 |     S: ?Sized + Stream<Item = Result<T, E>>,
    |         ^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:187:31
    |
187 |     S: ?Sized + Stream<Item = Result<T, E>>,
    |                               ^^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:195:15
    |
195 |     ) -> Poll<Option<Result<Self::Ok, Self::Error>>> {
    |               ^^^^^^ not found in this scope

error[E0412]: cannot find type `Result` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/stream.rs:195:22
    |
195 |     ) -> Poll<Option<Result<Self::Ok, Self::Error>>> {
    |                      ^^^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
  --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:98:23
   |
98 |     waker: UnsafeCell<Option<Waker>>,
   |                       ^^^^^^ not found in this scope

error[E0405]: cannot find trait `Sync` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:209:27
    |
209 |         trait AssertSync: Sync {}
    |                           ^^^^ not found in this scope

error[E0425]: cannot find value `None` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:212:73
    |
212 |         Self { state: AtomicUsize::new(WAITING), waker: UnsafeCell::new(None) }
    |                                                                         ^^^^ not found in this scope

error[E0531]: cannot find tuple struct or tuple variant `Ok` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:289:25
    |
289 |                         Ok(_) => {
    |                         ^^ not found in this scope

error[E0531]: cannot find tuple struct or tuple variant `Err` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:296:25
    |
296 |                         Err(actual) => {
    |                         ^^^ not found in this scope

error[E0531]: cannot find tuple struct or tuple variant `Some` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:359:16
    |
359 |         if let Some(waker) = self.take() {
    |                ^^^^ not found in this scope

error[E0412]: cannot find type `Option` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:372:27
    |
372 |     pub fn take(&self) -> Option<Waker> {
    |                           ^^^^^^ not found in this scope

error[E0425]: cannot find value `None` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:397:17
    |
397 |                 None
    |                 ^^^^ not found in this scope

error[E0405]: cannot find trait `Default` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:403:6
    |
403 | impl Default for AtomicWaker {
    |      ^^^^^^^ not found in this scope

error[E0405]: cannot find trait `Send` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:415:13
    |
415 | unsafe impl Send for AtomicWaker {}
    |             ^^^^ not found in this scope

error[E0405]: cannot find trait `Sync` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:416:13
    |
416 | unsafe impl Sync for AtomicWaker {}
    |             ^^^^ not found in this scope

error: could not compile `byteorder` due to 89 previous errors
error[E0425]: cannot find function, tuple struct or tuple variant `Some` in this scope
   --> /Users/yashwanthsingh/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.27/src/task/__internal/atomic_waker.rs:274:41
    |
274 |                     *self.waker.get() = Some(waker.clone());
    |                                         ^^^^ not found in this scope

Some errors have detailed explanations: E0405, E0412, E0425, E0432, E0463, E0531.
error: could not compile `futures-core` due to 60 previous errors
yashwanthsingh@Yashwanths-MacBook-Pro stm32f4 % 

[Dirbaio]

yes, it should definitely work. There's something wrong with your Rust installation. Perhaps you have multiple of them, so it's uring the wrong one? Perhaps one through rustup, one not?

[evanthomas]

I'm having a similar problem. Interestlingly, stm32f4 builds fine for me but nrf52840 is a mess. I've uninstalled and resintalled rust and cargo, WSL in my case.. Would love some help to debug this.

evan@dugsy:~/projects/embassy/examples/nrf52840$ rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/evan/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-2023-04-18-x86_64-unknown-linux-gnu

installed targets for active toolchain
--------------------------------------

riscv32imac-unknown-none-elf
thumbv6m-none-eabi
thumbv7em-none-eabi
thumbv7em-none-eabihf
thumbv7m-none-eabi
thumbv8m.main-none-eabihf
wasm32-unknown-unknown
x86_64-unknown-linux-gnu

active toolchain
----------------

nightly-2023-04-18-x86_64-unknown-linux-gnu (overridden by '/home/evan/projects/embassy/rust-toolchain.toml')
rustc 1.71.0-nightly (7908a1d65 2023-04-17)

evan@dugsy:~/projects/embassy/examples/nrf52840$ cargo run --bin blinky 2>&1 | head -40
warning: embassy-nrf52840-examples v0.1.0 (/home/evan/projects/embassy/examples/nrf52840) ignoring invalid dependency `probe-run` which is missing a lib target
   Compiling stable_deref_trait v1.2.0
   Compiling byteorder v1.4.3
   Compiling serde v1.0.163
   Compiling num-traits v0.2.15
error[E0463]: can't find crate for `std`
  |
  = note: the `thumbv7em-none-eabi` target may not support the standard library
  = note: `std` is required by `stable_deref_trait` because it does not declare `#![no_std]`
  = help: consider building the standard library from source with `cargo build -Zbuild-std`

error[E0463]: can't find crate for `std`
  |
  = note: the `thumbv7em-none-eabi` target may not support the standard library
  = note: `std` is required by `byteorder` because it does not declare `#![no_std]`
  = help: consider building the standard library from source with `cargo build -Zbuild-std`

error[E0463]: can't find crate for `std`
  --> /home/evan/.cargo/registry/src/index.crates.io-6f17d22bba15001f/num-traits-0.2.15/src/lib.rs:21:1
   |
21 | extern crate std;
   | ^^^^^^^^^^^^^^^^^ can't find crate
   |
   = note: the `thumbv7em-none-eabi` target may not support the standard library
   = help: consider building the standard library from source with `cargo build -Zbuild-std`

error[E0463]: can't find crate for `std`
  |
  = note: the `thumbv7em-none-eabi` target may not support the standard library
  = note: `std` is required by `serde` because it does not declare `#![no_std]`
  = help: consider building the standard library from source with `cargo build -Zbuild-std`

error[E0432]: unresolved imports `self::core::cmp`, `self::core::iter`, `self::core::mem`, `self::core::num`, `self::core::ptr`, `self::core::slice`, `self::core::str`
   --> /home/evan/.cargo/registry/src/index.crates.io-6f17d22bba15001f/serde-1.0.163/src/lib.rs:171:26
    |
171 |     pub use self::core::{cmp, iter, mem, num, ptr, slice, str};
    |                          ^^^  ^^^^  ^^^  ^^^  ^^^  ^^^^^  ^^^ no `str` in `lib::core`
    |                          |    |     |    |    |    |
    |                          |    |     |    |    |    no `slice` in `lib::core`
    |                          |    |     |    |    no `ptr` in `lib::core`

This results in ~5k errors.

[evanthomas]

Try deleting and recloning the embassy repo, that worked for me. No idea how it got borked, all did was follow the instructions. Maybe the version I cloned was inconsistent.

[yashwanthsinghm]

I reinstalled everything from scratch recloned the new repository, still the i'm getting same errors. @evanthomas @Dirbaio

[Dirbaio]

make sure you've completely removed /Users/yashwanthsingh/.rustup, then let rustup redownload all the rust toolchain.

[yashwanthsinghm]

I was able to compile on my new linux machine now, i will remove .rustup and will check in mac.@Dirbaio

[stappersg]

@yashwanthsinghm commented on May 17

I was able to compile on my new linux machine now, i will remove .rustup and will check in mac.

Thanks for reporting works on Linux. Please report status on Mac. Closing the issue is also fine.