[Python-modules-team] Bug#923179: systemd breaks python-dbusmock autopkgtest

[Paul Gevers]

Source: systemd, python-dbusmock
Control: found -1 systemd/241-1
Control: found -1 python-dbusmock/0.18.1-2
Severity: important
X-Debbugs-CC: debian-ci at lists.debian.org
User: debian-ci at lists.debian.org
Usertags: breaks needs-update

Dear maintainers,

With a recent upload of systemd the autopkgtest of python-dbusmock fails
in testing when that autopkgtest is run with the binary packages of
systemd from unstable. It passes when run with only packages from
testing. In tabular form:
                       pass            fail
systemd                from testing    241-1
python-dbusmock        from testing    0.18.1-2
versioned deps [0]     from testing    from unstable
all others             from testing    from testing

I copied some of the output at the bottom of this report.

Currently this regression is blocking the migration of systemd to
testing [1]. Due to the nature of this issue, I filed this bug report
against both packages. Can you please investigate the situation and
reassign the bug to the right package? If needed, please change the
bug's severity.

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

Paul

[0] You can see what packages were added from the second line of the log
file quoted below. The migration software adds source package from
unstable to the list if they are needed to install packages from
systemd/241-1. I.e. due to versioned dependencies or breaks/conflicts.
[1] https://qa.debian.org/excuses.php?package=systemd

https://ci.debian.net/data/autopkgtest/testing/amd64/p/python-dbusmock/1994233/log.gz

======================================================================
FAIL: test_empty (__main__.TestLogind)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test_logind.py", line 57, in test_empty
    self.assertEqual(out, '')
AssertionError: 'No sessions.\n' != ''
- No sessions.

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