Docker Build Error on Compiling proc-macro2-error

When running docker build --rm -t wasabi . the following error message is displayed:
...
   Compiling proc-macro-error v0.2.6
error[E0658]: :literal fragment specifier is experimental and subject to change (see issue #35625)
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:161:18
    |
161 |     ($span:expr, $fmt:literal, $($args:expr),*) => {{
    |                  ^^^^^^^^^^^^

error[E0658]: :literal fragment specifier is experimental and subject to change (see issue #35625)
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:181:6
    |
181 |     ($fmt:literal, $($args:expr),*) => {{
    |      ^^^^^^^^^^^^

error[E0658]: imports can only refer to extern crate names passed with `--extern` on stable channel (see issue #53130)
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:139:9
    |
135 | pub mod dummy;
    | -------------- not an extern crate passed with `--extern`
...
139 | pub use dummy::set_dummy;
    |         ^^^^^
    |
note: this import refers to the module defined here
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:135:1
    |
135 | pub mod dummy;
    | ^^^^^^^^^^^^^^

error[E0658]: imports can only refer to extern crate names passed with `--extern` on stable channel (see issue #53130)
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:140:9
    |
136 | pub mod multi;
    | -------------- not an extern crate passed with `--extern`
...
140 | pub use multi::MultiMacroErrors;
    |         ^^^^^
    |
note: this import refers to the module defined here
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:136:1
    |
136 | pub mod multi;
    | ^^^^^^^^^^^^^^

error[E0658]: imports can only refer to extern crate names passed with `--extern` on stable channel (see issue #53130)
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:141:9
    |
137 | pub mod single;
    | --------------- not an extern crate passed with `--extern`
...
141 | pub use single::MacroError;
    |         ^^^^^^
    |
note: this import refers to the module defined here
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:137:1
    |
137 | pub mod single;
    | ^^^^^^^^^^^^^^^

error[E0308]: match arms have incompatible types
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-0.2.6/src/lib.rs:244:9
    |
244 | /         match self {
245 | |             Some(res) => res,
246 | |             None => call_site_error!(message),
    | |                     ------------------------- match arm with an incompatible type
247 | |         }
    | |_________^ expected type parameter, found bool
    |
    = note: expected type `T`
               found type `bool`

error: aborting due to 6 previous errors

Some errors occurred: E0308, E0658.
For more information about an error, try `rustc --explain E0308`.
error: Could not compile `proc-macro-error`.
...
danleh / wasabi

Docker Build Error on Compiling proc-macro2-error #25
