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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.257 ·

Stale daemon lock replacement telemetry

Replacing a stale daemon lock now reports the proof type, holder age and whether it ran a different version.

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaSessionswhat it touches
KindInternal Changesin v2.1.257,
Under the hood

Replacing a stale daemon lock now reports the proof type, holder age and whether it ran a different version.

When the background daemon detects and replaces a stale lock file, either because the holder predates boot or its PID was recycled, it now emits a tengu_daemon_stale_lock_replaced telemetry event recording the proof type, the holder's age, and whether the holder was running a different version.

See this entry in the whole of v2.1.257 →

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