swaitsandClaude Opus 5.5 122fed0a7a cargo: tests keep their books in /tmp when TMPDIR points elsewhere ...

just mutants* points TMPDIR at ~/.cache for cargo-mutants' tree copies;
the tests inherited it and synced every journal append to disk, several
times slower per mutant. Cargo's [env] reaches the tests it runs, not
cargo-mutants, so the copies stay in the cache.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GWVo7x3UHw5kwCUaWxiejX

2026-10-14 14:19:27 -06:00

..

config.toml

cargo: tests keep their books in /tmp when TMPDIR points elsewhere

2026-10-14 14:19:27 -06:00