[Pkg-privacy-maintainers] Bug#909275: xorg-server breaks onioncircuits autopkgtest: expected string, NoneType found

[Paul Gevers]

Source: xorg-server, onioncircuits
Control: found -1 xorg-server/2:1.20.1-3
Control: found -1 onioncircuits/0.5-2
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 xorg-server the autopkgtest of onioncircuits
fails in testing when that autopkgtest is run with the binary packages
of xorg-server from unstable. Interesting data point, with 2:1.20.1-2
from two days ago it passed. It passes when run with only packages from
testing. In tabular form:
                       pass            pass          fail
xorg-server            from testing    2:1.20.1-2    2:1.20.1-3
onioncircuits          from testing    0.5-2         0.5.2
all others             from testing    from testing  from testing

I copied some of the output at the bottom of this report. Based on
reading the xorg-server changelog, I suspect these tests are trying to
activate something on screen and now they are missing the active area:
  * xvfb-run*: Update default resolution and bitdepth to match upstream
    defaults.

Currently this regression is contributing to the delay of the migration
of xorg-server 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

[1] https://qa.debian.org/excuses.php?package=xorg-server

https://ci.debian.net/data/autopkgtest/testing/amd64/o/onioncircuits/1022616/log.gz

autopkgtest [16:47:15]: test gui-test: [-----------------------
waiting for Tor to settle...
E
======================================================================
ERROR: test_has_correct_circuits (__main__.TestOnionCircuitsGUI)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "debian/tests/check-circuits", line 70, in test_has_correct_circuits
    self.assertEqual(self._get_circuits(), mycircs)
  File "debian/tests/check-circuits", line 54, in _get_circuits
    circs.add(", ".join(nicks))
TypeError: sequence item 0: expected string, NoneType found

----------------------------------------------------------------------
Ran 1 test in 1.046s

FAILED (errors=1)
autopkgtest [16:47:37]: test gui-test: -----------------------]

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