ci: replace global RUST_TEST_THREADS=1 with per-crate --test-threads=1#280

Merged

Brooooooklyn merged 5 commits intomainfrom

claude/reproduce-flaky-failure-RuwlG

Mar 21, 2026

Commits on Mar 21, 2026

ci: replace global RUST_TEST_THREADS=1 with per-crate --test-threads=1

claude
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Brooooooklyn
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fix: use posix_spawn on musl to avoid fork() SIGSEGV in parallel tests

claude
authored and
Brooooooklyn
committed
Revert "fix: use posix_spawn on musl to avoid fork() SIGSEGV in parallel tests"

claude
authored and
Brooooooklyn
committed
fix: use cargo-nextest on musl to run tests in parallel safely

claude
authored and
Brooooooklyn
committed
fix: exclude custom-harness packages from nextest, run them with cargo test

claude
authored and
Brooooooklyn
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