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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.246 ·

Session-process failures record which phase died

Session process crashes now say whether they died during setup or during the run.

Under the hood Internal Changes
JSON All of v2.1.246
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.246,
Internal ChangesSection of the release
What

The synthetic error produced when a session process exits now tags the phase, distinguishing a death during setup from one during the run, alongside the exit code and signal.

Evidence

runner_exit

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.246 →

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