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Track T by default: the FAILING STEP named no owner. Line 2 of 6 is tools/expect_same.sh test_nilpy_threadstack "$(/tmp/test_nilpy_threadstack | tail -n 1)" "THREADSTACK OK". The job's own src (test/test_nilpy_a_thread_nobody_joins_gives_its_stack_back.npy, 2 file(s)) is NOT used here on purpose: it is what the job compiles, not what broke, and guessing a lane from it is what sent three reds in one job to the wrong lane. This is a FALLBACK, not a finding — nothing says the defect is Track T's. Re-lane it before working it.

The SLUG names test_nilpy_a_thread_nobody_joins_gives_its_stack_back, and that is not what broke. The slug is derived from the job's src: selector so that it stays stable across a renumbering — it is the dedupe key and the close key — but src: says what the job is ABOUT. The failing step names expect_same. Read the Failing step: bullet, not the file name in the title, before you reproduce anything: the row the slug names may be passing.

origin/master has advanced 7 commit(s) since this sha. Re-verify at current HEAD before acting — the callback is tagged to the sha that was tested, which may no longer be the state of the tree.

regression: lib-test#src:test/test_nilpy_a_thread_nobody_joins_gives_its_stack_back.npy at 503514455013 in step 2/6, tools/expect_same.sh test_nilpy_threadstack "$(/tmp/test_nilpy_threadstack | tail -n 1)" "THREADSTACK OK" (auto-filed by twatch)

Repro

tools/testmgr.py --tier full --job 'lib-test#src:test/test_nilpy_a_thread_nobody_joins_gives_its_stack_back.npy' at 5035144550139e34e3ca1c3c5d62a45a6d987902

Range

The named sha 503514455013 CANNOT be the cause — it touches no buildable file (docs / tickets / tstate only). It is the sha that was TESTED, i.e. the upper bound of an untested range; the cause is somewhere below it.

bad 503514455013, last good 8e2464989f2a, 2 commit(s) in range — the watcher narrows this by idle bisect; check tstate/TSTATE.md for the current range.

Log tail

note: threading -> mimic_threading (shim, subset)
ok: /tmp/testmgr-scratch-96264/test_nilpy_threadstack  [code=730751B  data=130568B  bss=102660B  procs=2597  codeseg=732896B]
expect_same: MISMATCH [test_nilpy_threadstack]
--- expected
+++ actual
@@ -1 +1 @@
-THREADSTACK OK
+THREADSTACK FAIL

Stub ticket: signal only. Track T agent (face 2) enriches or a dev track takes it from the repro line.

Log