explain-test-failure

Diagnoses one failing test from an error message, stack trace, CI log, or trace file and classifies the root cause as app defect, test bug, environment issue, or flakiness, without changing any code. Use when a test fails and you need to know why before deciding who fixes what. To have the failure fixed, use the fix-tests command; for a whole run with many failures, use the analyze-test-results command.