Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.281,
Internal ChangesSection of the release
Unclear The finding does not say what Claude Code does once it detects such a file.
What
The worker journal, a record file kept by internal worker processes, gained writtenByNewerBuild. It reports true when reading the file fails with the reason unsupported_version.
Why
In practice, a journal file from a newer build can now be recognised as such, rather than looking like an ordinary unreadable file.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe finding does not say what Claude Code does once it detects such a file.
