ICE: simple Serde case - Githubissues

The derive must be used in a seperate library AND then that library must be used by a binary. Both Serialize AND Deserialize must be derived.

I setup a crate as described below and then run cargo run

rust info:

nightly-x86_64-unknown-linux-gnu (default) rustc 1.19.0-nightly (28fd1e519 2017-05-27)

lib.rs

#[macro_use] extern crate serde_derive;
extern crate serde;

#[derive(Serialize, Deserialize)]
struct Foo { }

main.rs

extern crate serde_ice;

fn main() { }

Cargo.toml

[package]
name = "serde_ice"
version = "0.1.0"
authors = ["Rukai <rubickent@gmail.com>"]

[dependencies]
serde_derive = "1.0"
serde = "1.0"

Error:

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: run with `RUST_BACKTRACE=1` for a backtrace

thread 'rustc' panicked at 'already have hash for FileMap(DefId { krate: CrateNum(12), node: DefIndex(0) => serde_ice/a4dca7716f394bad3085990cc69b3720 }, "/home/rubic/Foo/serde_test/src/<proc-macro source code>")', /checkout/src/librustc_incremental/persist/hash.rs:254
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:60
             at /checkout/src/libstd/panicking.rs:355
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:365
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:549
   5: std::panicking::begin_panic
             at /checkout/src/libstd/panicking.rs:511
   6: std::panicking::begin_panic_fmt
             at /checkout/src/libstd/panicking.rs:495
   7: rustc_incremental::persist::hash::HashContext::load_data
   8: rustc_incremental::persist::hash::HashContext::hash
   9: rustc_incremental::persist::load::decode_dep_graph
  10: rustc_incremental::persist::load::load_dep_graph
  11: rustc_driver::driver::phase_3_run_analysis_passes::{{closure}}
  12: rustc_driver::driver::phase_3_run_analysis_passes
  13: rustc_driver::driver::compile_input
  14: rustc_driver::run_compiler

rust-lang / rust

ICE: simple Serde case #42279

rust info:

lib.rs

main.rs

Cargo.toml

Error: