mypyc runtime tests with py39-macos is unstable
#16420
Labels
bug
mypy got something wrong
Comments
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Yeah, the macOS mypyc runtime tests have been flaky for some time now. We have some hypotheses about what might be going on, but as far as I know this still bit of a mystery. |
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I wasn't aware we had hypotheses! The only thing I confirmed was that it doesn't seem to be related to any code change in mypy, something changed out from underneath us |
ilevkivskyi
added a commit
that referenced
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Nov 19, 2023
Fixes #16420 Although this is not 100% clear yet, but after 20 runs on a Mac I have it no longer fails (without this patch it failed 20% of times). Btw, contrary to the comment, _my_ Linux Mint (which is an Ubuntu derivative) works perfectly (i.e. test passed 20 times even after I removed the `sleep()`). So it is not really Mac vs Linux issue.
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Bug Report
The following tests in
mypyc runtime tests with py39-macosspuriously failed during PR #14934 , even though I did not touch any code related to them:I added two empty dummy commits to get the pipeline to succeed. The following three commits have no code changes, but for the first two some of the tests fail:
To Reproduce
Trigger a CI pipeline run without code changes.
Expected Behavior
The test runs are consistent.
Actual Behavior
Tests spuriously fail. See links to the log files above.
Your Environment
This happened in the CI runs of !PR #14934.
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