[Debian-astro-maintainers] Bug#933102: astropy breaks multiple autopkgtest (uncoordinated transition or unintended drop of files?)

[Paul Gevers]

Source: astropy
Control: found -1 astropy/3.2.1-1
Severity: important
X-Debbugs-CC: debian-ci at lists.debian.org
User: debian-ci at lists.debian.org
Usertags: breaks

Dear maintainers,

With a recent upload of astropy the autopkgtest of multiple packages
fail in testing when that autopkgtest is run with the binary packages of
astropy from unstable. It passes when run with only packages from
testing. In tabular form (example for astroplan):
                       pass            fail
astropy                from testing    3.2.1-1
astroplan              from testing    0.4-4
all others             from testing    from testing

I copied some of the output of astroplan at the bottom of this report.
I've seen multiple times a similar error.

Currently this regression is blocking the migration of astropy to
testing [1]. If all this is intended, I failed to spot the coordination
with the reverse dependencies (the first three packages I checked didn't
have any bug at all).

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

Paul

[1] https://qa.debian.org/excuses.php?package=astropy

https://ci.debian.net/data/autopkgtest/testing/amd64/a/astroplan/2615720/log.gz

autopkgtest [10:15:20]: test command1: [-----------------------
WARNING: AstropyDeprecationWarning: astropy.extern.six will be removed
in 4.0, use the six module directly if it is still needed
[astropy.extern.six]
ImportError while loading conftest
'/usr/lib/python3/dist-packages/astroplan/conftest.py'.
/usr/lib/python3/dist-packages/astroplan/conftest.py:12: in <module>
    from astropy.tests.pytest_plugins import *
E   ModuleNotFoundError: No module named 'astropy.tests.pytest_plugins'
autopkgtest [10:15:21]: test command1: -----------------------]

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