Exit Code 3 in CI: What It Means and How to Fix It
Exit code 3 has no standard meaning - it is whatever the tool that returned it defines.
POSIX assigns no shared meaning to exit 3; it is application-defined.
What it means
A tool-specific error class (e.g. some linters/installers use 3 for a particular failure).
Common causes
- A specific failure mode in the tool you ran.
- A custom
exit 3in a script.
How to fix it
Check the producing tool’s exit-code documentation for what 3 means in its context.
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