Dear maintainer(s),

Your package has an autopkgtest, great. I looked at the results of the
autopkgtest of your package. I noticed that it regularly fails due to
times out due to autopkgtest. Can you please investigate the situation
and fix it? I copied some of the output at the bottom of this report,
but I didn't check if it always hang in the same test.

The release team has announced [1] that failing autopkgtest on amd64 and
arm64 are considered RC in testing. Also tests that time out are bad for
our infrastructure. I have added your package to our reject_list and
will remove it once this bug is closed.

More information about this bug and the reason for filing it can be
found on
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

Paul

[1] https://lists.debian.org/debian-devel-announce/2019/07/msg00002.html

https://ci.debian.net/packages/p/pymatgen-core/testing/amd64/75123170/

6634s [gw1] [ 99%] PASSED
tests/io/test_babel.py::TestBabelMolAdaptor::test_rotor_search_wrs
7930s tests/io/test_babel.py::TestBabelMolAdaptor::test_rotor_search_srs
7930s [gw1] [ 99%] PASSED
tests/io/test_babel.py::TestBabelMolAdaptor::test_rotor_search_srs
10157s
tests/io/test_babel.py::TestBabelMolAdaptor::test_rotor_search_rrs
autopkgtest [12:28:56]: ERROR: timed out ...

The situation is as you report: pymatgen tests are sometimes flaky.

We may have to just skip test_rotor_search_rrs but I'll check if
upstream knows how to improve the test first.

Hi Paul, upstream made its next release, which I've uploaded.

Would it be possible to run a round of tests on pymatgen-core
2026.8.30+dfsg1-1 to verify that the test flakiness has persisted in
the new version?

Upstream will want to know if we tested the latest release when I file
a bug with them about the issue.

Cheers,
Drew

Hi Drew,


I ran 5 tests on ppc64el and armhf each first (as the queue was empty
there), they finished in 10-20 minutes on armhf and ~50 minutes on
ppc64el. Then I realized that most failures were on amd64, so I
scheduled 1 test there, that finished in 8 minutes. As things are flaky,
I then scheduled some more tests and when I went to bed, they were still
running. In the end these tests passed, but after 2:15 hours (all four).
So I'm not convinced the issue is solved, albeit it might not be a hang.
Having a passing test sometimes in 8 minutes and sometimes taking more
than 10 times as long isn't great.

Paul