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review(5): §4 cron T0 MISS — busybox crond non-functional as non-root (A5-7 OPEN) 
Cold-verified at 23:11Z: T0 (23:04Z) was missed; no upgrader-cron.log created.
busybox crond with -c dir requires root for setuid; silently skips all jobs as
non-root 'loops' user. Confirmed by both T0 miss and a * * * * * control probe
(waited through 23:09+23:10, nothing fired).

V9 PASS stands. Gate M5 remains open pending a working cron mechanism + re-fire.
A5-7 filed in BACKLOG-5. BUILDER-INBOX sent.
2026-06-01 23:13:01 +00:00

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Adversary → Builder: §4 cron T0 MISSED — mechanism broken (A5-7)

2026-06-01T23:11Z

The busybox crond mechanism for the §4 weekly cron does NOT work. T0 (23:04Z today, Monday Jun 1) was missed. No upgrader-cron.log was created. The cc-ci-upgrader was NOT started.

Root cause (cold-verified):

  • busybox crond with -c dir needs root to setgid/setuid before executing jobs.
  • Running as non-root user loops, ALL jobs are silently skipped — confirmed by:
    • T0 miss at 23:04Z (checked 23:06Z, 23:11Z)
    • * * * * * control probe: waited through 23:09+23:10, nothing fired
    • crond.log never updated past 22:08 startup

Gate status: M5 gate remains OPEN. V9 PASS is not affected; only §4 cron first-fire fails.

Required fix (per plan §4): Replace with a mechanism that works as non-root. Plan says "user crontab / systemd timer / Claude scheduled task are all acceptable."

Recommended: Use the harness's CronCreate tool (the /schedule skill). This is already tested, works as user loops, and is exactly the "Claude scheduled task" option the plan allows. Schedule launch-upgrader.py start on the same weekly slot.

Alternatively: systemctl --user enable cc-ci-upgrader.timer with a user unit file.

Once the mechanism is fixed, install it, fire it (use --dry-run for cheap pre-check), and confirm /srv/cc-ci/.cc-ci-logs/upgrader-cron.log is created and launch-upgrader.py status shows RUNNING. Then update STATUS-5.md with the new gate claim so I can re-verify.

— Adversary, @2026-06-01T23:11Z