A registry-only mount at /usr/local/cargo/registry left the package-cache lock under CARGO_HOME=/usr/local/cargo in each
container's own layer, so sibling containers (cargo-mutants stages, concurrent ygg-verify jobs) shared no lock and removed
each other's half-unpacked crate directories. Reproduced on Yggdrasil from an empty registry: 15 of 18 containers failed
with a registry mount, 15 of 18 with RUSTC_WRAPPER= too, 0 of 18 with the volume as CARGO_HOME.
ygg-verify.sh and cargo-mutants.sh mount eureka-cargo-home at /cargo-home and set CARGO_HOME and PATH for the rust image.
Removed: the retry without RUSTC_WRAPPER, its note and diag plumbing, and its two tests and the FAKE_CM_DEADWRAP switch.
Kept: container errors tail 25 lines.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Stage containers sharing the eureka-sccache volume died mid-build with cargo's
"could not execute process ... sccache ... (never executed)" or a missing dep-info
file in their own target dir, though the image's sccache is present, executes, and
a lone container builds clean. The wrapper only caches, so a failed build with
RUSTC_WRAPPER set is retried once without it; the job summary carries a NOTE line
saying which way it went, the first attempt's log is kept, and a build dead either
way stays a red baseline (exit 4) with its cause. Container errors now tail 25
lines, not 5. Tests: dead wrapper recovers with NOTE; red with and without the
wrapper stays red.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- full-baseline-skipped: stage 2 runs even when stage 1 settled every name (one name rides along; cargo-mutants runs no baseline for an empty selection), so a red suite is a red job
- timeout-mult-splits-missed: CONFIRM_TIMEOUT_MULT defaults to 5 and stage 2 gets --minimum-test-timeout like stage 1
- escaper-pipe-untested: the escaper is the --escape mode, run by the driver and by tests/test-tools.sh with each metacharacter
- zero-test-stage1-wasted: the plan container derives each file's filter and counts its tests (cargo test -- <filter> --list); 0 tests goes straight to stage 2; the container-side baseline.log count is deleted
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
One verify job per range: a plan container lists the mutants (diff taken at the
workspace root), stage 1 runs each file's mutants against that file's tests only
and decides only caught and unviable, stage 2 confirms every survivor, timeout,
unfiltered or zero-test file on the full suite, sharded over free slot leases,
and the merge prints one MUTANTS line and the final MISSED/TIMEOUT names.
NAMES reruns chosen survivors; TEST_ARGS skips flaky tests.
Deletes ygg-verify.sh's MISSED/TIMEOUT summary grep and its inline cargo mutants
usage example; the host-mode export gains YGG_SLOTS and YGG_ROOT. Briefs and
SKILL.md name the script; the mock docker grows /cm and /out, with a fake cargo
and a fake flock for the new test-tools.sh cases.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
