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Bug#915908: matplotlib breaks python-cogent autopkgtest



Source: matplotlib, python-cogent
Control: found -1 matplotlib/2.2.3-2
Control: found -1 python-cogent/1.9-12
X-Debbugs-CC: debian-ci@lists.debian.org
User: debian-ci@lists.debian.org
Usertags: breaks needs-update

Dear maintainers,

With a recent upload of matplotlib the autopkgtest of python-cogent
fails in testing when that autopkgtest is run with the binary packages
of matplotlib from unstable. It passes when run with only packages from
testing. In tabular form:
                       pass            fail
matplotlib             from testing    2.2.3-2
python-cogent          from testing    1.9-12
all others             from testing    from testing

I copied some of the output at the bottom of this report. Interestingly
enough, the test passed with 2.2.3-1, in contrast to the other packages
at that time.

Currently this regression is contributing to the delay of the migration
of matplotlib 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=matplotlib

https://ci.debian.net/data/autopkgtest/testing/amd64/p/python-cogent/1451883/log.gz

autopkgtest [11:48:18]: test run-unit-test: [-----------------------
bwa can be tested on amd64 arch
lolo
Can't find formatdb executable: skipping test
Can't find blastall executable: skipping test
Can't find blat executable: skipping test
Can't find bwa executable: skipping test
Can't find carnac executable: skipping test
Can't find cdbfasta executable: skipping test
Can't find clearcut executable: skipping test
Can't find cmfinder.pl executable: skipping test
Can't find comrna executable: skipping test
Can't find contrafold executable: skipping test
Can't find covea executable: skipping test
Can't find dialign2-2 executable: skipping test
Can't find dynalign executable: skipping test
Can't find FastTree executable: skipping test
Can't find foldalign executable: skipping test
Can't find guppy executable: skipping test
Can't find ilm executable: skipping test
Can't find knetfold.pl executable: skipping test
Can't find mfold executable: skipping test
Can't find muscle executable: skipping test
Can't find msms executable: skipping test
Can't find pplacer executable: skipping test
Can't find rdp_classifier-2.2.jar executable: skipping test
Can't find rdp_classifier-2.0.jar executable: skipping test
Can't find Fold.out executable: skipping test
Can't find findphyl executable: skipping test
Can't find pknotsRG-1.2-i386-linux-static executable: skipping test
Can't find RNAalifold executable: skipping test
Can't find rnaview executable: skipping test
Can't find RNAfold executable: skipping test
Can't find sfold.X86_64.LINUX executable: skipping test
Can't find stride executable: skipping test
Can't find hybrid-ss-min executable: skipping test
Can't find cd-hit executable: skipping test
Can't find calculate_likelihood executable: skipping test
Can't find sfffile executable: skipping test
Can't find sffinfo executable: skipping test
Can't find uclust executable: skipping test
Can't find usearch executable: skipping test
Environment variable TEST_DB=1 not set: skipping db tests
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................../usr/lib/python2.7/dist-packages/matplotlib/tight_layout.py:182:
UserWarning: The bottom and top margins cannot be made large enough to
accommodate all axes decorations.
  warnings.warn('The bottom and top margins cannot be made large '
F............
======================================================================
FAIL: test_set_figure_size_long_labels
(test_draw.test_distribution_plots.DistributionPlotsTests)
Test setting a figure size that has really long labels.
----------------------------------------------------------------------
Traceback (most recent call last):
  File
"/tmp/autopkgtest-lxc.gcsqih4m/downtmp/autopkgtest_tmp/tests/test_draw/test_distribution_plots.py",
line 511, in test_set_figure_size_long_labels
    "Warning: could not automatically resize plot to make room for "
  File "/usr/lib/python2.7/dist-packages/cogent/util/unit_test.py", line
316, in failUnlessEqual
    (msg or 'Got %s, but expected %s' % (`observed`, `expected`))
AssertionError: Got '', but expected "Warning: could not automatically
resize plot to make room for axes labels and plot title. This can happen
if the labels or title are extremely long and the plot size is too
small. Your plot may have its labels and/or title cut-off. To fix this,
try increasing the plot's size (in inches) and try again."

----------------------------------------------------------------------
Ran 3527 tests in 54.981s

FAILED (failures=1)
autopkgtest [11:49:16]: test run-unit-test: -----------------------]

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