Error messages from rustc interleaved

[bjorn3]

Problem

I ran cargo test and saw:

   Compiling moria v0.1.0 (/Users/bjorn/Documents/moria)
error: expected one of `;` or `{`, found `#`
error: expected one of `;` or `{`, found `#`
  --> src/lib.rs:42:1
   |
  --> src/lib.rs:42:1
40 | mod dsym
   |
40 | mod dsym
   |         - expected one of `;` or `{` here
   |         - expected one of `;` or `{` here
41 | 
42 | #[cfg(not(target_os="macos"))]
   | ^ unexpected token

41 | 
42 | #[cfg(not(target_os="macos"))]
   | ^ unexpected token

error: aborting due to previous error

error: aborting due to previous error

error: Could not compile `moria`.
warning: build failed, waiting for other jobs to finish...
error: Could not compile `moria`.

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

Steps

1. Add an error (eg syntax error) to a rust file.
2. Run cargo test

Possible Solution(s)

Notes

Output of cargo version: cargo 1.33.0 (f099fe94b 2019-02-12)

$ uname
Darwin