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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.272 ·

New background-runner epoch/retry constants for session failure handling

New retry timing and stale-session detection added to background session failure reporting

Under the hood Internal Changes
JSON All of v2.1.272
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Internal ChangesKind: in v2.1.272,
Internal ChangesSection of the release
What

The background runner's failure-reporting path, covering runner:session and runner:stuck logging, gained new timing constants (500ms, 1000ms, 2000ms, and 3000ms) and an abort helper. These are used when retrying a failed attempt to post a failure result, and to detect when another runner has already taken over a session, logged as a "stale epoch" rejection.

Why

This makes background session failure handling more robust: retries are now timed explicitly, and a runner can tell when it's no longer the current owner of a session instead of continuing to report against it.

See this entry in the whole of v2.1.272 →

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