test errors in CI: "AssertionError: 2 != 1"
These errors happen from time to time in CI, e.g.
https://gitlab.gnome.org/GNOME/tracker-miners/-/jobs/1353012 https://gitlab.gnome.org/GNOME/tracker-miners/-/jobs/1386777 https://gitlab.gnome.org/GNOME/tracker-miners/-/jobs/1388179
--- command ---
11:03:54 TRACKER_LANGUAGE_STOP_WORDS_DIR='/builds/GNOME/tracker-miners/subprojects/tracker/src/libtracker-common/stop-words' TRACKER_FUNCTIONAL_TEST_CONFIG='/builds/GNOME/tracker-miners/build/tests/functional-tests/configuration.json' PYTHONPATH='/builds/GNOME/tracker-miners/subprojects/tracker/utils' LD_LIBRARY_PATH='/builds/GNOME/tracker-miners/build/subprojects/tracker/src/libtracker-sparql:/usr/lib/libeatmydata' GI_TYPELIB_PATH='/builds/GNOME/tracker-miners/build/subprojects/tracker/src/libtracker-sparql' /usr/bin/python3 /builds/GNOME/tracker-miners/tests/functional-tests/miner-basic.py
--- stdout ---
...
not ok 9 Delete a directory
# Traceback (most recent call last):
# File "/usr/lib/python3.9/unittest/case.py", line 59, in testPartExecutor
# yield
# File "/usr/lib/python3.9/unittest/case.py", line 593, in run
# self._callTestMethod(testMethod)
# File "/usr/lib/python3.9/unittest/case.py", line 550, in _callTestMethod
# method()
# File "/builds/GNOME/tracker-miners/tests/functional-tests/miner-basic.py", line 336, in test_09_deletion_directory
# self.assertEqual(len(result), 1)
# File "/usr/lib/python3.9/unittest/case.py", line 831, in assertEqual
# assertion_func(first, second, msg=msg)
# File "/usr/lib/python3.9/unittest/case.py", line 824, in _baseAssertEqual
# raise self.failureException(msg)
# AssertionError: 2 != 1