Charlie Marsh cfffcbb269 Cancel waiting tasks on resolution error (#753) ...

## Summary

I don't understand why this works (because I don't understand why it's
erroring) but it does. See:
https://github.com/astral-sh/puffin/pull/746#issuecomment-1875722454.

## Test Plan

```
cargo run --bin puffin pip-install requires-transitive-incompatible-with-transitive-8329cfc0 --extra-index-url https://test.pypi.org/simple -n
```

2024-01-03 20:18:27 +00:00

..

src

Cancel waiting tasks on resolution error (#753)

2024-01-03 20:18:27 +00:00

tests

Model Python version as a PubGrub package (#745)

2024-01-03 15:20:45 +00:00

Cargo.toml

Split puffin-cache into Puffin-specific and generic utilities (#728)

2023-12-25 14:38:56 +00:00