Nice find!

When this is merged, I'll release new version.

The change has unearthed another oddity of the LSP protocol, if the authority of a file_name in a span is empty, the path is absolute. This was occurring for me, and it made bacon panic because it couldn't find the file.

This behavior is now encoded into maybe_add_diagnostics.

I've also extended the debug logging slightly so these errors are easier to catch in the future (also, when receiving reports from users).

CI is failing because you need to run cargo fmt. After that, feel free to merge.

I experienced the same oddity you found, it's great you had time to find the root cause.

Huh. Interesting. My local cargo fmt didn't reorder the imports. However, I fixed it manually.

Will merge once CI succeeds.

I am a bit flooded at work, I'll release a new version over the weekend probably. Thanks a lot!!