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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.305 ·

Runner logs can be written on a separate thread

The runner's log writer can now write its output on a thread of its own, falling back to direct writes with a warning

Under the hood Internal Changes
JSON All of v2.1.305
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.305,
Internal ChangesSection of the release
What

In runner mode, the part of Claude Code that writes its output and error logs can now do so on a separate thread, meaning a parallel line of work inside the program. If that thread cannot start, it writes directly instead and logs a warning.

Why

If whatever is reading the logs stops reading, Claude Code itself is no longer held up waiting on it.

See this entry in the whole of v2.1.305 →

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