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* root cause looks like a merge, repeat on the other integration branch | * root cause looks like a merge, repeat on the other integration branch | ||
* rarely but sometimes failures occur on mozilla-central landings, or as a result of code merging | * rarely but sometimes failures occur on mozilla-central landings, or as a result of code merging | ||
* sometimes it is obvious from check-in messages (or TV failures) that the failing test case was modified on a certain push: If the test was modified around the time it started failing, that's suspicious and can be used as a short-cut to find the regressing changeset. |