Under the hood
Useful2 Signal2
If the local messaging socket binds but then fails setup, it cleans up and reports that separately.
What's wrong with this entry?
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What
If the local messaging socket binds successfully but setup then throws, the server releases its held state, runs its cleanup callback, and records the failure cause as post-bind setup, distinct from bind-time failures such as a too-long socket path.
Evidence
post_bind_setup_failed
Strings lifted out of the shipped bundle, so the claim above can be checked against them.