[Python-modules-team] Bug#916944: pytest FTBFS: TestRaises.test_raises_exception_looks_iterable fails

[Adrian Bunk]

Source: pytest
Version: 3.6.4-1
Severity: serious
Tags: ftbfs

Some recent change in unstable makes pytest FTBFS:

https://tests.reproducible-builds.org/debian/history/pytest.html
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/pytest.html

...
=================================== FAILURES ===================================
_______________ TestRaises.test_raises_exception_looks_iterable ________________

self = <raises.TestRaises object at 0x7f88851c86a0>

    def test_raises_exception_looks_iterable(self):
        from six import add_metaclass
    
        class Meta(type(object)):
            def __getitem__(self, item):
                return 1 / 0
    
            def __len__(self):
                return 1
    
        @add_metaclass(Meta)
        class ClassLooksIterableException(Exception):
            pass
    
        with pytest.raises(
            Failed, match="DID NOT RAISE <class 'raises.ClassLooksIterableException'>"
        ):
>           pytest.raises(ClassLooksIterableException, lambda: None)

/build/1st/pytest-3.10.1/testing/python/raises.py:174: 
...
 1 failed, 1986 passed, 47 skipped, 1 deselected, 10 xfailed in 268.71 seconds =
E: pybuild pybuild:338: test: plugin custom failed with: exit code=1: cd /build/1st/pytest-3.10.1/debian/tmp/test-working-directory && python3.7 -m pytest --lsof -rfsxX --ignore=/build/1st/pytest-3.10.1/testing/freeze --ignore=/build/1st/pytest-3.10.1/testing/test_entry_points.py --ignore=/build/1st/pytest-3.10.1/testing/test_pdb.py --ignore=/build/1st/pytest-3.10.1/testing/test_mark.py --ignore=/build/1st/pytest-3.10.1/testing/test_terminal.py -k 'not test_trial_pdb' /build/1st/pytest-3.10.1/testing
dh_auto_test: pybuild --test --test-nose -i python{version} -p 3.7 --system=custom returned exit code 13
make[1]: *** [debian/rules:47: override_dh_auto_test] Error 25