All CI runs for swh-graph fail during pytest test collection. Quoting from a recent example:
============================= test session starts ============================== platform linux -- Python 3.7.3, pytest-5.2.2, py-1.8.0, pluggy-0.13.0 cachedir: .tox/py3/.pytest_cache rootdir: /home/jenkins/workspace/DGRPH/tests, inifile: pytest.ini plugins: cov-2.8.1, swh.core-0.0.76, hypothesis-4.42.10 collected 0 items / 1 errors ==================================== ERRORS ==================================== ________________________ ERROR collecting test session _________________________ .tox/py3/lib/python3.7/site-packages/_pytest/config/__init__.py:451: in _importconftest return self._conftestpath2mod[key] E KeyError: PosixPath('/home/jenkins/workspace/DGRPH/tests/swh/graph/tests/conftest.py') During handling of the above exception, another exception occurred: .tox/py3/lib/python3.7/site-packages/_pytest/config/__init__.py:457: in _importconftest mod = conftestpath.pyimport() .tox/py3/lib/python3.7/site-packages/py/_path/local.py:721: in pyimport raise self.ImportMismatchError(modname, modfile, self) E py._path.local.LocalPath.ImportMismatchError: ('swh.graph.tests.conftest', '/home/jenkins/workspace/DGRPH/tests/.tox/py3/lib/python3.7/site-packages/swh/graph/tests/conftest.py', local('/home/jenkins/workspace/DGRPH/tests/swh/graph/tests/conftest.py')) During handling of the above exception, another exception occurred: .tox/py3/lib/python3.7/site-packages/py/_path/common.py:377: in visit for x in Visitor(fil, rec, ignore, bf, sort).gen(self): .tox/py3/lib/python3.7/site-packages/py/_path/common.py:429: in gen for p in self.gen(subdir): .tox/py3/lib/python3.7/site-packages/py/_path/common.py:429: in gen for p in self.gen(subdir): .tox/py3/lib/python3.7/site-packages/py/_path/common.py:418: in gen dirs = self.optsort([p for p in entries .tox/py3/lib/python3.7/site-packages/py/_path/common.py:419: in <listcomp> if p.check(dir=1) and (rec is None or rec(p))]) .tox/py3/lib/python3.7/site-packages/_pytest/main.py:608: in _recurse ihook = self.gethookproxy(dirpath) .tox/py3/lib/python3.7/site-packages/_pytest/main.py:426: in gethookproxy my_conftestmodules = pm._getconftestmodules(fspath) .tox/py3/lib/python3.7/site-packages/_pytest/config/__init__.py:429: in _getconftestmodules mod = self._importconftest(conftestpath) .tox/py3/lib/python3.7/site-packages/_pytest/config/__init__.py:465: in _importconftest raise ConftestImportFailure(conftestpath, sys.exc_info()) E _pytest.config.ConftestImportFailure: (local('/home/jenkins/workspace/DGRPH/tests/swh/graph/tests/conftest.py'), (<class 'py._path.local.LocalPath.ImportMismatchError'>, ImportMismatchError('swh.graph.tests.conftest', '/home/jenkins/workspace/DGRPH/tests/.tox/py3/lib/python3.7/site-packages/swh/graph/tests/conftest.py', local('/home/jenkins/workspace/DGRPH/tests/swh/graph/tests/conftest.py')), <traceback object at 0x7f8778a6a408>))
Random googling suggests an unclean CI environment in terms of python caches.