The issue appears to be this commit: https://github.com/rust-lang/cc-rs/commit/9af6b9591b8766752d1c0d6fe347fe32a3b9e5d1 I discovered this when trying to build this repo: https://github.com/ofek/pyapp Passed 6 hours ago: https://github.com/pypa/hatch/actions/runs/8760646787/job/24045960846#step:12:121 Now consistently failing: https://github.com/pypa/hatch/actions/runs/8762826835/job/24051033022?pr=1407#step:12:124