Placate Clippy

[itowlson]

No description provided.

[radu-matei]

I'm getting a test failure on macOS:

thread 'test::can_serve_multiple_static_entrypoints' panicked at 'assertion failed: `(left == right)`
  left: `200`,
 right: `404`', src/lib.rs:155:9

In fact, there seem to be a flaky test somewhere.

---- test::can_serve_from_modules_toml stdout ----
No log_dir specified, using temporary directory /var/folders/rs/7g5937rn0sq1vyrtwf0_48140000gn/T/.tmpXi9eIx for logs
thread 'test::can_serve_from_modules_toml' panicked at 'assertion failed: `(left == right)`
  left: `200`,
 right: `404`', src/lib.rs:233:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace


failures:
    test::can_serve_from_modules_toml

[itowlson]

Well Butcher should have bought me a M-- oh wait

[itowlson]

Two possibilties:

1. When it tries to sub an absolute path into the test*.toml - something is going amiss between Mac and file: URL formats. I doubt this because it is passing in CI, but it's possible.

2. There was also a concurrency bug in the way replace_placeholders created temporary files, which is fixed in a different PR. This would result in flakes. I'm not sure if there's a way to run tests single threaded...

[itowlson]

The fix for the concurrency bug is to change let tempfile_path = tempfile_dir.join("modules.toml"); in replace_placeholder to pass original_map_file instead of "modules.toml".

[radu-matei]

Ok, given the concurrency bug is solved somewhere else, this PR LGTM.

Thanks!