runxpcshelltests.py has the functionality to not re-run failed tests in "sequential" mode when only one test is being run. However, due to mach's use of a manifest, this is broken when using mach, and the test gets unnnecessarily rerun unless you specify --sequential.
Status: NEW → RESOLVED
Last Resolved: 4 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 969633
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