Panic compiling unreachable v1.0.0/memchr v2.0.1 only inside a Docker container and only on Windows. #58613

   Compiling unreachable v1.0.0
   Compiling memchr v2.0.1
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }', src\libcore\result.rs:1009:5
note: Run with `RUST_BACKTRACE=1` for a backtrace.

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: rustc 1.32.0 (9fda7c223 2019-01-16) running on x86_64-pc-windows-msvc

note: compiler flags: -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

error: Could not compile `unreachable`.
warning: build failed, waiting for other jobs to finish...
error[E0658]: use of unstable library feature 'libc': use `libc` from crates.io (see issue #27783)
  --> C:\Users\ContainerAdministrator\.cargo\registry\src\github.com-1ecc6299db9ec823\memchr-2.0.1\src\lib.rs:17:1
   |
17 | extern crate libc;
   | ^^^^^^^^^^^^^^^^^^

error[E0658]: use of unstable library feature 'libc': use `libc` from crates.io (see issue #27783)
  --> C:\Users\ContainerAdministrator\.cargo\registry\src\github.com-1ecc6299db9ec823\memchr-2.0.1\src\lib.rs:24:5
   |
24 | use libc::c_void;
   |     ^^^^^^^^^^^^

error[E0658]: use of unstable library feature 'libc': use `libc` from crates.io (see issue #27783)
  --> C:\Users\ContainerAdministrator\.cargo\registry\src\github.com-1ecc6299db9ec823\memchr-2.0.1\src\lib.rs:26:12
   |
26 | use libc::{c_int, size_t};
   |            ^^^^^

error[E0658]: use of unstable library feature 'libc': use `libc` from crates.io (see issue #27783)
  --> C:\Users\ContainerAdministrator\.cargo\registry\src\github.com-1ecc6299db9ec823\memchr-2.0.1\src\lib.rs:26:19
   |
26 | use libc::{c_int, size_t};
   |                   ^^^^^^

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0658`.
error: Could not compile `memchr`.

To learn more, run the command again with --verbose.