That does sound strange. How easily can you reproduce it? That majorly effects how I would try to debug something like this...
If you're able to get an strace of a failed run then that would probably tell us a *lot*. On Fri, Mar 29, 2019, 16:28 Steve Dower <steve.do...@python.org> wrote: > Hi > > I'm trying to track down the cause of the failed Linux tests on this > build (it's also been happening on random PR builds for the last day or > two, but this is the first I've seen it happen on already merged code): > > https://dev.azure.com/Python/cpython/_build/results?buildId=40189 > > One of the failed tests is this one from test_tarfile.py (and I think > this is representative of the others): > > def test_file_mode(self): > # Test for issue #8464: Create files with correct > # permissions. > if os.path.exists(tmpname): > support.unlink(tmpname) > > original_umask = os.umask(0o022) > try: > tar = tarfile.open(tmpname, self.mode) > tar.close() > mode = os.stat(tmpname).st_mode & 0o777 > self.assertEqual(mode, 0o644, "wrong file permissions") > finally: > os.umask(original_umask) > > It's failing because the mode of the new TAR file is 0o666 rather than > 0o644. I'd guess that this means the umask() call is not having effect? > But honestly this is beyond me - I don't have any idea what would cause > Python to ignore that, and I don't see anything in the commit history > that could be at fault. > > I'm hoping someone can tell me that it's definitely a platform > configuration issue or it's definitely interference between two of our > tests (which run in random order, which would explain the intermittent > nature of this, but I haven't spotted any tests that seem likely either). > > To see the other failed PR builds, the full list is at > https://dev.azure.com/Python/cpython/_build?definitionId=9 and most of > the ones from today have failed because of whatever is causing it. > > Any help? > > Thanks, > Steve > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > https://mail.python.org/mailman/options/python-dev/njs%40pobox.com >
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