id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 27028 Clarify failed parallel tests run message Adam Zapletal Adam Zapletal "If the test suite fails while running with more than one process, and the traceback is cannot be pickled, this message is printed: `You should re-run this test without the --parallel option to reproduce the failure and get a correct traceback.` The CPU count on my machine is 4, and the test suite runs with 4 processors if I don't provide the `--parallel` option or if I provide it with no argument. So the message is misleading. Perhaps the error message should say: `You should re-run this test with the ""--parallel 1"" option to reproduce the failure and get a correct traceback.` I'll be happy to submit a PR if this ticket is accepted." Cleanup/optimization closed Testing framework dev Normal fixed Accepted 1 0 0 0 0 0