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wanderbooks/.cargo/config.toml
T
swaitsandClaude Opus 5.5 122fed0a7a
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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

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TOML

# Test books (a few KB each, every journal append synced) go in the system
# temp dir, /tmp, even when TMPDIR points elsewhere: `just mutants*` sets
# TMPDIR to ~/.cache for cargo-mutants' multi-GB tree copies, and cargo
# passes [env] to the tests it runs, not to cargo-mutants itself. On disk
# the synced appends made each mutant's tests several times slower.
[env]
TMPDIR = { value = "/tmp", force = true }