python-pyramid: FTBFS: test_add_view_custom_predicate_* tests fail

Imported from Debian bug http://bugs.debian.org/800725:

Source: python-pyramid
Version: 1.5.1+dfsg-2
Severity: serious
Justification: fails to build from source
User: <email address hidden>
Usertags: ftbfs
X-Debbugs-Cc: <email address hidden>

Dear Maintainer,

python-pyramid fails to build from source in unstable/amd64:

  [..]

  ======================================================================
  FAIL: test_add_view_custom_predicate_bests_standard_predicate
  (pyramid.tests.test_config.test_views.TestViewsConfigurationMixin)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File
    "/tmp/buildd/python-pyramid-1.5.1+dfsg/pyramid/tests/test_config/test_views.py",
    line 1471, in
    test_add_view_custom_predicate_bests_standard_predicate
      self.assertEqual(len(w), 1)
  AssertionError: 3 != 1

  ======================================================================
  FAIL: test_add_view_with_custom_predicates_match
  (pyramid.tests.test_config.test_views.TestViewsConfigurationMixin)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File
    "/tmp/buildd/python-pyramid-1.5.1+dfsg/pyramid/tests/test_config/test_views.py",
    line 1435, in test_add_view_with_custom_predicates_match
      self.assertEqual(len(w), 1)
  AssertionError: 2 != 1

  ======================================================================
  FAIL: test_add_view_with_custom_predicates_nomatch
  (pyramid.tests.test_config.test_views.TestViewsConfigurationMixin)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File
    "/tmp/buildd/python-pyramid-1.5.1+dfsg/pyramid/tests/test_config/test_views.py",
    line 1452, in test_add_view_with_custom_predicates_nomatch
      self.assertEqual(len(w), 1)
  AssertionError: 2 != 1

  ----------------------------------------------------------------------
  Ran 2307 tests in 10.279s

  FAILED (failures=3)
  E: pybuild pybuild:262: test: plugin distutils failed with: exit
  code=1: python3.5 setup.py test
  dh_auto_test: pybuild --test -i python{version} -p 3.4 3.5 --dir .
  returned exit code 13
  debian/rules:8: recipe for target 'build' failed
  make: *** [build] Error 25
  dpkg-buildpackage: error: debian/rules build gave error exit status 2

  [..]

The full build log is attached or can be viewed here:

    https://reproducible.debian.net/logs/unstable/amd64/python-pyramid_1.5.1+dfsg-2.build1.log.gz

Regards,

--
      ,''`.
     : :' : Chris Lamb
     `. `'` <email address hidden> / chris-lamb.co.uk
       `-