Track guessed as B from the FAILING STEP — line 1 of 3, stable_linux_amd64/default/pinned --threadsafe -Fulib/rtl test/lib_criticalsection_blocking.pas /tmp/lib_cs_blocking, which names test/lib_criticalsection_blocking.pas. Not from the job's name or its src: those describe what the job is ABOUT, and this job's recipe spans 2 source file(s). The ranker reads frontmatter, so this line — not the body — decides who works it; correct it if the guess is wrong.

origin/master has advanced 3 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/lib_criticalsection_blocking.pas at 934ba04180e9 in step 1/3, stable_linux_amd64/default/pinned --threadsafe -Fulib/rtl test/lib_criticalsection_blocking.pas /tmp/lib_cs_blocking (auto-filed by twatch)

• Type: regression (auto-filed by Track T watcher, host borg, twatch 1d5c476a6328). Untriaged.
• Found: 2026-09-14T17:57:27Z
• Test source: test/lib_criticalsection_blocking.pas tools/expect_same.sh
• Failing step: line 1 of 3 of the job's recipe; it names test/lib_criticalsection_blocking.pas.

  stable_linux_amd64/default/pinned --threadsafe -Fulib/rtl test/lib_criticalsection_blocking.pas /tmp/lib_cs_blocking
  
  

Repro

tools/testmgr.py --tier full --job 'lib-test#src:test/lib_criticalsection_blocking.pas' at 934ba04180e95d273bc57583fc2d8311cd0a96e8

Range

bad 934ba04180e9, last good b984ad07e38f, 1 observable commit(s) in range (it builds with $(PXX_STABLE), so compiler/ commits cannot have caused it and are dropped; pin moves, lib/ and test/ are kept) — the watcher narrows this by idle bisect.

Log tail

pascal26:218: error: expected 'begin' before 'weakexternal'
(tail)
pascal26:218: error: expected 'begin' before 'weakexternal'
  in: lib/rtl/palthread.pas
  near: ) : Integer ; cdecl ; >>> weakexternal 'libc.so.6' name 

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

Log

• 2026-09-14 — auto-closed by the borg watcher: lib-test#src:test/lib_criticalsection_blocking.pas passes at 1eee9b23387b (tier full); it was red at 934ba04180e9. Reopening is by a fresh NEW-RED stub, since a second red is a second finding with its own range.