7.4.0: pytest is failing with internal error on testing `mypy` (possible bug in pytest?)

[kloczek]

• a detailed description of the bug or problem you are having
• output of pip list from the virtual environment you are using
• pytest and operating system versions
• minimal example if possible

I'm packaging mypy as the rpm package so I'm using the typical PEP517 based build, install and test cycle used on building packages from non-root account.

• python3 -sBm build -w --no-isolation
• because I'm calling build with --no-isolation I'm using during all processes only locally installed modules
• install .whl file in </install/prefix> using 'installer` module
• run pytest with $PYTHONPATH pointing to sitearch and sitelib inside </install/prefix>
• build is performed in env which is cut off from access to the public network (pytest is executed with -m "not network")

Here is pytest output:

+ PYTHONPATH=/home/tkloczko/rpmbuild/BUILDROOT/python-mypy-1.4.1-3.fc35.x86_64/usr/lib64/python3.8/site-packages:/home/tkloczko/rpmbuild/BUILDROOT/python-mypy-1.4.1-3.fc35.x86_64/usr/lib/python3.8/site-packages
+ /usr/bin/pytest -ra -m 'not network' -vvv
==================================================================================== test session starts ====================================================================================
platform linux -- Python 3.8.17, pytest-7.4.0, pluggy-1.0.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /home/tkloczko/rpmbuild/BUILD/mypy-1.4.1
configfile: pytest.ini
testpaths: mypy/test, mypyc/test
plugins: cov-4.0.0, xdist-3.3.1, forked-1.6.0
24 workers [11206 items]
scheduling tests via LoadScheduling

mypy/test/test_find_sources.py::SourceFinderSuite::test_crawl_namespace
mypy/test/testcheck.py::TypeCheckSuite::check-classes.test::testTypeUsingTypeCInUpperBound <- test-data/unit/check-classes.test
[gw0] [  0%] PASSED mypy/test/test_find_sources.py::SourceFinderSuite::test_crawl_namespace
mypy/test/test_find_sources.py::SourceFinderSuite::test_crawl_namespace_explicit_base
[gw0] [  0%] PASSED mypy/test/test_find_sources.py::SourceFinderSuite::test_crawl_namespace_explicit_base
mypy/test/test_find_sources.py::SourceFinderSuite::test_crawl_namespace_multi_dir
mypy/test/testcheck.py::TypeCheckSuite::check-dynamic-typing.test::testImplicitGlobalFunctionSignature <- test-data/unit/check-dynamic-typing.test
mypy/test/testcheck.py::TypeCheckSuite::check-enum.test::testFinalWithDunderAssignment <- test-data/unit/check-enum.test
mypy/test/testcheck.py::TypeCheckSuite::check-annotated.test::testAnnotatedAliasGenericUnion <- test-data/unit/check-annotated.test
mypy/test/testcheck.py::TypeCheckSuite::check-classes.test::testDescriptorDunderSetWrongArgTypes <- test-data/unit/check-classes.test
mypy/test/testcheck.py::TypeCheckSuite::check-columns.test::testColumnReturnValueExpected <- test-data/unit/check-columns.test
mypy/test/testcheck.py::TypeCheckSuite::check-bound.test::testBoundHigherOrderWithVoid <- test-data/unit/check-bound.test
[gw0] [  0%] PASSED mypy/test/test_find_sources.py::SourceFinderSuite::test_crawl_namespace_multi_dir
mypy/test/test_find_sources.py::SourceFinderSuite::test_crawl_no_namespace

[..]

[gw0] [ 67%] SKIPPED mypy/test/testfinegrainedcache.py::FineGrainedCacheSuite::fine-grained-follow-imports.test::testFollowImportsNormalAddSuppressed3_cached <- test-data/unit/fine-grained-follow-imports.test
mypy/test/testfinegrainedcache.py::FineGrainedCacheSuite::fine-grained-follow-imports.test::testFollowImportsNormalEditingFileBringNewModule_cached <- test-data/unit/fine-grained-follow-imports.test
INTERNALERROR> def worker_internal_error(self, node, formatted_error):
INTERNALERROR>         """
INTERNALERROR>         pytest_internalerror() was called on the worker.
INTERNALERROR>
INTERNALERROR>         pytest_internalerror() arguments are an excinfo and an excrepr, which can't
INTERNALERROR>         be serialized, so we go with a poor man's solution of raising an exception
INTERNALERROR>         here ourselves using the formatted message.
INTERNALERROR>         """
INTERNALERROR>         self._active_nodes.remove(node)
INTERNALERROR>         try:
INTERNALERROR> >           assert False, formatted_error
INTERNALERROR> E           AssertionError: Traceback (most recent call last):
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/main.py", line 270, in wrap_session
INTERNALERROR> E                 session.exitstatus = doit(config, session) or 0
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/main.py", line 324, in _main
INTERNALERROR> E                 config.hook.pytest_runtestloop(session=session)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_hooks.py", line 265, in __call__
INTERNALERROR> E                 return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_manager.py", line 80, in _hookexec
INTERNALERROR> E                 return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 60, in _multicall
INTERNALERROR> E                 return outcome.get_result()
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_result.py", line 60, in get_result
INTERNALERROR> E                 raise ex[1].with_traceback(ex[2])
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 39, in _multicall
INTERNALERROR> E                 res = hook_impl.function(*args)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/xdist/remote.py", line 157, in pytest_runtestloop
INTERNALERROR> E                 self.run_one_test()
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/xdist/remote.py", line 174, in run_one_test
INTERNALERROR> E                 self.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_hooks.py", line 265, in __call__
INTERNALERROR> E                 return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_manager.py", line 80, in _hookexec
INTERNALERROR> E                 return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 60, in _multicall
INTERNALERROR> E                 return outcome.get_result()
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_result.py", line 60, in get_result
INTERNALERROR> E                 raise ex[1].with_traceback(ex[2])
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 39, in _multicall
INTERNALERROR> E                 res = hook_impl.function(*args)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/runner.py", line 114, in pytest_runtest_protocol
INTERNALERROR> E                 runtestprotocol(item, nextitem=nextitem)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/runner.py", line 133, in runtestprotocol
INTERNALERROR> E                 reports.append(call_and_report(item, "call", log))
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/runner.py", line 224, in call_and_report
INTERNALERROR> E                 report: TestReport = hook.pytest_runtest_makereport(item=item, call=call)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_hooks.py", line 265, in __call__
INTERNALERROR> E                 return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_manager.py", line 80, in _hookexec
INTERNALERROR> E                 return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 55, in _multicall
INTERNALERROR> E                 gen.send(outcome)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/skipping.py", line 266, in pytest_runtest_makereport
INTERNALERROR> E                 rep = outcome.get_result()
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_result.py", line 60, in get_result
INTERNALERROR> E                 raise ex[1].with_traceback(ex[2])
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 39, in _multicall
INTERNALERROR> E                 res = hook_impl.function(*args)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/runner.py", line 368, in pytest_runtest_makereport
INTERNALERROR> E                 return TestReport.from_item_and_call(item, call)
INTERNALERROR> E               File "/usr/lib/python3.8/site-packages/_pytest/reports.py", line 362, in from_item_and_call
INTERNALERROR> E                 longrepr = item.repr_failure(excinfo)
INTERNALERROR> E               File "/home/tkloczko/rpmbuild/BUILD/mypy-1.4.1/mypy/test/data.py", line 392, in repr_failure
INTERNALERROR> E                 self.parent._prunetraceback(excinfo)
INTERNALERROR> E             AttributeError: 'DataFileCollector' object has no attribute '_prunetraceback'
INTERNALERROR> E           assert False
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/xdist/dsession.py:197: AssertionError
[gw21] [ 67%] PASSED mypy/test/testfinegrainedcache.py::FineGrainedCacheSuite::fine-grained.test::testMakeClassNoLongerAbstract1_cached <- test-data/unit/fine-grained.test
mypy/test/testfinegrainedcache.py::FineGrainedCacheSuite::fine-grained.test::testMakeClassNoLongerAbstract2_cached <- test-data/unit/fine-grained.test
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/_pytest/main.py", line 270, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/_pytest/main.py", line 324, in _main
INTERNALERROR>     config.hook.pytest_runtestloop(session=session)
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/pluggy/_hooks.py", line 265, in __call__
INTERNALERROR>     return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/pluggy/_manager.py", line 80, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 60, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/pluggy/_result.py", line 60, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/pluggy/_callers.py", line 39, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/xdist/dsession.py", line 122, in pytest_runtestloop
INTERNALERROR>     self.loop_once()
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/xdist/dsession.py", line 145, in loop_once
INTERNALERROR>     call(**kwargs)
INTERNALERROR>   File "/usr/lib/python3.8/site-packages/xdist/dsession.py", line 184, in worker_workerfinished
INTERNALERROR>     assert not crashitem, (crashitem, node)
INTERNALERROR> AssertionError: ('mypy/test/testpep561.py::PEP561Suite::pep561.test::testTypedPkg_config_nositepackages', <WorkerController gw9>)
INTERNALERROR> assert not 'mypy/test/testpep561.py::PEP561Suite::pep561.test::testTypedPkg_config_nositepackages'

======================================================================= 7476 passed, 133 skipped, 6 xfailed in 43.78s =======================================================================

Here is list of installed modules in build env

Package                       Version
----------------------------- -------
alabaster                     0.7.13
ast_decompiler                0.7.0
asttokens                     2.2.1
attrs                         23.1.0
Babel                         2.12.1
backcall                      0.2.0
build                         0.10.0
charset-normalizer            3.1.0
coverage                      7.2.7
decorator                     5.1.1
distlib                       0.3.6
distro                        1.8.0
docutils                      0.19
exceptiongroup                1.1.1
execnet                       1.9.0
executing                     1.2.0
filelock                      3.12.2
flake8                        5.0.4
flake8-bugbear                22.7.1
flake8-pyi                    22.11.0
gpg                           1.20.0
idna                          3.4
imagesize                     1.4.1
importlib-metadata            6.7.0
iniconfig                     2.0.0
installer                     0.7.0
ipython                       8.12.0
jedi                          0.18.2
Jinja2                        3.1.2
libcomps                      0.1.19
lxml                          4.9.3
MarkupSafe                    2.1.2
matplotlib-inline             0.1.6
mccabe                        0.7.0
mypy-extensions               1.0.0
packaging                     23.1
parso                         0.8.3
pexpect                       4.8.0
pickleshare                   0.7.5
platformdirs                  3.8.1
pluggy                        1.0.0
prompt-toolkit                3.0.38
psutil                        5.9.2
ptyprocess                    0.7.0
pure-eval                     0.2.2
py                            1.11.0
pycodestyle                   2.9.1
pyflakes                      2.5.0
Pygments                      2.15.1
pyproject_hooks               1.0.0
pytest                        7.4.0
pytest-cov                    4.0.0
pytest-forked                 1.6.0
pytest-xdist                  3.3.1
python-dateutil               2.8.2
pytz                          2023.2
requests                      2.31.0
setuptools                    68.0.0
six                           1.16.0
snowballstemmer               2.2.0
Sphinx                        6.2.1
sphinx-rtd-theme              1.2.1
sphinxcontrib-applehelp       1.0.4
sphinxcontrib-devhelp         1.0.2
sphinxcontrib-htmlhelp        2.0.0
sphinxcontrib-jquery          4.1
sphinxcontrib-jsmath          1.0.1
sphinxcontrib-qthelp          1.0.3
sphinxcontrib-serializinghtml 1.1.5
stack-data                    0.6.2
tomli                         2.0.1
traitlets                     5.9.0
typed-ast                     1.5.4
typing_extensions             4.7.1
urllib3                       1.26.15
virtualenv                    20.23.1
wcwidth                       0.2.6
wheel                         0.40.0
zipp                          3.15.0

[RonnyPfannschmidt]

At first glance this looks like a custom collector missing a implicitly assumed api

Please provide output with --fulltrace so we can also observe the full error

[kloczek]

Here it is:

INTERNALERROR> def worker_internal_error(self, node, formatted_error):
INTERNALERROR>         """
INTERNALERROR>         pytest_internalerror() was called on the worker.
INTERNALERROR>
INTERNALERROR>         pytest_internalerror() arguments are an excinfo and an excrepr, which can't
INTERNALERROR>         be serialized, so we go with a poor man's solution of raising an exception
INTERNALERROR>         here ourselves using the formatted message.
INTERNALERROR>         """
INTERNALERROR>         self._active_nodes.remove(node)
INTERNALERROR>         try:
INTERNALERROR> >           assert False, formatted_error
INTERNALERROR> E           AssertionError: config = <_pytest.config.Config object at 0x7fae4647ca00>
INTERNALERROR> E             doit = <function _main at 0x7fae469bde50>
INTERNALERROR> E
INTERNALERROR> E                 def wrap_session(
INTERNALERROR> E                     config: Config, doit: Callable[[Config, "Session"], Optional[Union[int, ExitCode]]]
INTERNALERROR> E                 ) -> Union[int, ExitCode]:
INTERNALERROR> E                     """Skeleton command line program."""
INTERNALERROR> E                     session = Session.from_config(config)
INTERNALERROR> E                     session.exitstatus = ExitCode.OK
INTERNALERROR> E                     initstate = 0
INTERNALERROR> E                     try:
INTERNALERROR> E                         try:
INTERNALERROR> E                             config._do_configure()
INTERNALERROR> E                             initstate = 1
INTERNALERROR> E                             config.hook.pytest_sessionstart(session=session)
INTERNALERROR> E                             initstate = 2
INTERNALERROR> E             >               session.exitstatus = doit(config, session) or 0
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/main.py:270:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             config = <_pytest.config.Config object at 0x7fae4647ca00>
INTERNALERROR> E             session = <Session mypy-1.4.1 exitstatus=<ExitCode.INTERNAL_ERROR: 3> testsfailed=0 testscollected=11206>
INTERNALERROR> E
INTERNALERROR> E                 def _main(config: Config, session: "Session") -> Optional[Union[int, ExitCode]]:
INTERNALERROR> E                     """Default command line protocol for initialization, session,
INTERNALERROR> E                     running tests and reporting."""
INTERNALERROR> E                     config.hook.pytest_collection(session=session)
INTERNALERROR> E             >       config.hook.pytest_runtestloop(session=session)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/main.py:324:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <_HookCaller 'pytest_runtestloop'>, args = ()
INTERNALERROR> E             kwargs = {'session': <Session mypy-1.4.1 exitstatus=<ExitCode.INTERNAL_ERROR: 3> testsfailed=0 testscollected=11206>}
INTERNALERROR> E             argname = 'session', firstresult = True
INTERNALERROR> E
INTERNALERROR> E                 def __call__(self, *args, **kwargs):
INTERNALERROR> E                     if args:
INTERNALERROR> E                         raise TypeError("hook calling supports only keyword arguments")
INTERNALERROR> E                     assert not self.is_historic()
INTERNALERROR> E
INTERNALERROR> E                     # This is written to avoid expensive operations when not needed.
INTERNALERROR> E                     if self.spec:
INTERNALERROR> E                         for argname in self.spec.argnames:
INTERNALERROR> E                             if argname not in kwargs:
INTERNALERROR> E                                 notincall = tuple(set(self.spec.argnames) - kwargs.keys())
INTERNALERROR> E                                 warnings.warn(
INTERNALERROR> E                                     "Argument(s) {} which are declared in the hookspec "
INTERNALERROR> E                                     "can not be found in this hook call".format(notincall),
INTERNALERROR> E                                     stacklevel=2,
INTERNALERROR> E                                 )
INTERNALERROR> E                                 break
INTERNALERROR> E
INTERNALERROR> E                         firstresult = self.spec.opts.get("firstresult")
INTERNALERROR> E                     else:
INTERNALERROR> E                         firstresult = False
INTERNALERROR> E
INTERNALERROR> E             >       return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/pluggy/_hooks.py:265:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <_pytest.config.PytestPluginManager object at 0x7fae47b7ebb0>
INTERNALERROR> E             hook_name = 'pytest_runtestloop'
INTERNALERROR> E             methods = [<HookImpl plugin_name='main', plugin=<module '_pytest.main' from '/usr/lib/python3.8/site-packages/_pytest/main.py'>>...ae4647ce20>>, <HookImpl plugin_name='logging-plugin', plugin=<_pytest.logging.LoggingPlugin object at 0x7fae45fdc370>>]
INTERNALERROR> E             kwargs = {'session': <Session mypy-1.4.1 exitstatus=<ExitCode.INTERNAL_ERROR: 3> testsfailed=0 testscollected=11206>}
INTERNALERROR> E             firstresult = True
INTERNALERROR> E
INTERNALERROR> E                 def _hookexec(self, hook_name, methods, kwargs, firstresult):
INTERNALERROR> E                     # called from all hookcaller instances.
INTERNALERROR> E                     # enable_tracing will set its own wrapping function at self._inner_hookexec
INTERNALERROR> E             >       return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/pluggy/_manager.py:80:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <__channelexec__.WorkerInteractor object at 0x7fae4647ce20>
INTERNALERROR> E             session = <Session mypy-1.4.1 exitstatus=<ExitCode.INTERNAL_ERROR: 3> testsfailed=0 testscollected=11206>
INTERNALERROR> E
INTERNALERROR> E                 @pytest.hookimpl
INTERNALERROR> E                 def pytest_runtestloop(self, session):
INTERNALERROR> E                     self.log("entering main loop")
INTERNALERROR> E                     self.channel.setcallback(self.handle_command, endmarker=self.SHUTDOWN_MARK)
INTERNALERROR> E                     self.nextitem_index = self._get_next_item_index()
INTERNALERROR> E                     while self.nextitem_index is not self.SHUTDOWN_MARK:
INTERNALERROR> E             >           self.run_one_test()
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/xdist/remote.py:157:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <__channelexec__.WorkerInteractor object at 0x7fae4647ce20>
INTERNALERROR> E
INTERNALERROR> E                 def run_one_test(self):
INTERNALERROR> E                     self.item_index = self.nextitem_index
INTERNALERROR> E                     self.nextitem_index = self._get_next_item_index()
INTERNALERROR> E
INTERNALERROR> E                     items = self.session.items
INTERNALERROR> E                     item = items[self.item_index]
INTERNALERROR> E                     if self.nextitem_index is self.SHUTDOWN_MARK:
INTERNALERROR> E                         nextitem = None
INTERNALERROR> E                     else:
INTERNALERROR> E                         nextitem = items[self.nextitem_index]
INTERNALERROR> E
INTERNALERROR> E                     worker_title("[pytest-xdist running] %s" % item.nodeid)
INTERNALERROR> E
INTERNALERROR> E                     start = time.time()
INTERNALERROR> E             >       self.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/xdist/remote.py:174:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <_HookCaller 'pytest_runtest_protocol'>, args = ()
INTERNALERROR> E             kwargs = {'item': <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>, 'nextitem': <DataDrivenTestCase testTypedPkgSimple>}
INTERNALERROR> E             argname = 'nextitem', firstresult = True
INTERNALERROR> E
INTERNALERROR> E                 def __call__(self, *args, **kwargs):
INTERNALERROR> E                     if args:
INTERNALERROR> E                         raise TypeError("hook calling supports only keyword arguments")
INTERNALERROR> E                     assert not self.is_historic()
INTERNALERROR> E
INTERNALERROR> E                     # This is written to avoid expensive operations when not needed.
INTERNALERROR> E                     if self.spec:
INTERNALERROR> E                         for argname in self.spec.argnames:
INTERNALERROR> E                             if argname not in kwargs:
INTERNALERROR> E                                 notincall = tuple(set(self.spec.argnames) - kwargs.keys())
INTERNALERROR> E                                 warnings.warn(
INTERNALERROR> E                                     "Argument(s) {} which are declared in the hookspec "
INTERNALERROR> E                                     "can not be found in this hook call".format(notincall),
INTERNALERROR> E                                     stacklevel=2,
INTERNALERROR> E                                 )
INTERNALERROR> E                                 break
INTERNALERROR> E
INTERNALERROR> E                         firstresult = self.spec.opts.get("firstresult")
INTERNALERROR> E                     else:
INTERNALERROR> E                         firstresult = False
INTERNALERROR> E
INTERNALERROR> E             >       return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/pluggy/_hooks.py:265:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <_pytest.config.PytestPluginManager object at 0x7fae47b7ebb0>
INTERNALERROR> E             hook_name = 'pytest_runtest_protocol'
INTERNALERROR> E             methods = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from '/usr/lib/python3.8/site-packages/_pytest/runner...lugin_name='warnings', plugin=<module '_pytest.warnings' from '/usr/lib/python3.8/site-packages/_pytest/warnings.py'>>]
INTERNALERROR> E             kwargs = {'item': <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>, 'nextitem': <DataDrivenTestCase testTypedPkgSimple>}
INTERNALERROR> E             firstresult = True
INTERNALERROR> E
INTERNALERROR> E                 def _hookexec(self, hook_name, methods, kwargs, firstresult):
INTERNALERROR> E                     # called from all hookcaller instances.
INTERNALERROR> E                     # enable_tracing will set its own wrapping function at self._inner_hookexec
INTERNALERROR> E             >       return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/pluggy/_manager.py:80:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             item = <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>
INTERNALERROR> E             nextitem = <DataDrivenTestCase testTypedPkgSimple>
INTERNALERROR> E
INTERNALERROR> E                 def pytest_runtest_protocol(item: Item, nextitem: Optional[Item]) -> bool:
INTERNALERROR> E                     ihook = item.ihook
INTERNALERROR> E                     ihook.pytest_runtest_logstart(nodeid=item.nodeid, location=item.location)
INTERNALERROR> E             >       runtestprotocol(item, nextitem=nextitem)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/runner.py:114:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             item = <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>, log = True
INTERNALERROR> E             nextitem = <DataDrivenTestCase testTypedPkgSimple>
INTERNALERROR> E
INTERNALERROR> E                 def runtestprotocol(
INTERNALERROR> E                     item: Item, log: bool = True, nextitem: Optional[Item] = None
INTERNALERROR> E                 ) -> List[TestReport]:
INTERNALERROR> E                     hasrequest = hasattr(item, "_request")
INTERNALERROR> E                     if hasrequest and not item._request:  # type: ignore[attr-defined]
INTERNALERROR> E                         # This only happens if the item is re-run, as is done by
INTERNALERROR> E                         # pytest-rerunfailures.
INTERNALERROR> E                         item._initrequest()  # type: ignore[attr-defined]
INTERNALERROR> E                     rep = call_and_report(item, "setup", log)
INTERNALERROR> E                     reports = [rep]
INTERNALERROR> E                     if rep.passed:
INTERNALERROR> E                         if item.config.getoption("setupshow", False):
INTERNALERROR> E                             show_test_item(item)
INTERNALERROR> E                         if not item.config.getoption("setuponly", False):
INTERNALERROR> E             >               reports.append(call_and_report(item, "call", log))
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/runner.py:133:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             item = <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>, when = 'call'
INTERNALERROR> E             log = True, kwds = {}
INTERNALERROR> E             call = <CallInfo when='call' excinfo=<ExceptionInfo Exception("Failed to create venv.\nError: Command '['/tmp/tmp_uvwwx1i/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.\n") tblen=14>>
INTERNALERROR> E             hook = <_pytest.config.compat.PathAwareHookProxy object at 0x7fae4647cb80>
INTERNALERROR> E
INTERNALERROR> E                 def call_and_report(
INTERNALERROR> E                     item: Item, when: "Literal['setup', 'call', 'teardown']", log: bool = True, **kwds
INTERNALERROR> E                 ) -> TestReport:
INTERNALERROR> E                     call = call_runtest_hook(item, when, **kwds)
INTERNALERROR> E                     hook = item.ihook
INTERNALERROR> E             >       report: TestReport = hook.pytest_runtest_makereport(item=item, call=call)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/runner.py:224:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <_HookCaller 'pytest_runtest_makereport'>, args = ()
INTERNALERROR> E             kwargs = {'call': <CallInfo when='call' excinfo=<ExceptionInfo Exception("Failed to create venv.\nError: Command '['/tmp/tmp_uv...']' returned non-zero exit status 1.\n") tblen=14>>, 'item': <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>}
INTERNALERROR> E             argname = 'call', firstresult = True
INTERNALERROR> E
INTERNALERROR> E                 def __call__(self, *args, **kwargs):
INTERNALERROR> E                     if args:
INTERNALERROR> E                         raise TypeError("hook calling supports only keyword arguments")
INTERNALERROR> E                     assert not self.is_historic()
INTERNALERROR> E
INTERNALERROR> E                     # This is written to avoid expensive operations when not needed.
INTERNALERROR> E                     if self.spec:
INTERNALERROR> E                         for argname in self.spec.argnames:
INTERNALERROR> E                             if argname not in kwargs:
INTERNALERROR> E                                 notincall = tuple(set(self.spec.argnames) - kwargs.keys())
INTERNALERROR> E                                 warnings.warn(
INTERNALERROR> E                                     "Argument(s) {} which are declared in the hookspec "
INTERNALERROR> E                                     "can not be found in this hook call".format(notincall),
INTERNALERROR> E                                     stacklevel=2,
INTERNALERROR> E                                 )
INTERNALERROR> E                                 break
INTERNALERROR> E
INTERNALERROR> E                         firstresult = self.spec.opts.get("firstresult")
INTERNALERROR> E                     else:
INTERNALERROR> E                         firstresult = False
INTERNALERROR> E
INTERNALERROR> E             >       return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/pluggy/_hooks.py:265:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <_pytest.config.PytestPluginManager object at 0x7fae47b7ebb0>
INTERNALERROR> E             hook_name = 'pytest_runtest_makereport'
INTERNALERROR> E             methods = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from '/usr/lib/python3.8/site-packages/_pytest/runner...Impl plugin_name='tmpdir', plugin=<module '_pytest.tmpdir' from '/usr/lib/python3.8/site-packages/_pytest/tmpdir.py'>>]
INTERNALERROR> E             kwargs = {'call': <CallInfo when='call' excinfo=<ExceptionInfo Exception("Failed to create venv.\nError: Command '['/tmp/tmp_uv...']' returned non-zero exit status 1.\n") tblen=14>>, 'item': <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>}
INTERNALERROR> E             firstresult = True
INTERNALERROR> E
INTERNALERROR> E                 def _hookexec(self, hook_name, methods, kwargs, firstresult):
INTERNALERROR> E                     # called from all hookcaller instances.
INTERNALERROR> E                     # enable_tracing will set its own wrapping function at self._inner_hookexec
INTERNALERROR> E             >       return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/pluggy/_manager.py:80:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             item = <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>
INTERNALERROR> E             call = <CallInfo when='call' excinfo=<ExceptionInfo Exception("Failed to create venv.\nError: Command '['/tmp/tmp_uvwwx1i/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.\n") tblen=14>>
INTERNALERROR> E
INTERNALERROR> E                 @hookimpl(hookwrapper=True)
INTERNALERROR> E                 def pytest_runtest_makereport(item: Item, call: CallInfo[None]):
INTERNALERROR> E                     outcome = yield
INTERNALERROR> E             >       rep = outcome.get_result()
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/skipping.py:266:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             item = <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>
INTERNALERROR> E             call = <CallInfo when='call' excinfo=<ExceptionInfo Exception("Failed to create venv.\nError: Command '['/tmp/tmp_uvwwx1i/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.\n") tblen=14>>
INTERNALERROR> E
INTERNALERROR> E                 def pytest_runtest_makereport(item: Item, call: CallInfo[None]) -> TestReport:
INTERNALERROR> E             >       return TestReport.from_item_and_call(item, call)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/runner.py:368:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             cls = <class '_pytest.reports.TestReport'>
INTERNALERROR> E             item = <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>
INTERNALERROR> E             call = <CallInfo when='call' excinfo=<ExceptionInfo Exception("Failed to create venv.\nError: Command '['/tmp/tmp_uvwwx1i/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.\n") tblen=14>>
INTERNALERROR> E
INTERNALERROR> E                 @classmethod
INTERNALERROR> E                 def from_item_and_call(cls, item: Item, call: "CallInfo[None]") -> "TestReport":
INTERNALERROR> E                     """Create and fill a TestReport with standard item and call info.
INTERNALERROR> E
INTERNALERROR> E                     :param item: The item.
INTERNALERROR> E                     :param call: The call info.
INTERNALERROR> E                     """
INTERNALERROR> E                     when = call.when
INTERNALERROR> E                     # Remove "collect" from the Literal type -- only for collection calls.
INTERNALERROR> E                     assert when != "collect"
INTERNALERROR> E                     duration = call.duration
INTERNALERROR> E                     start = call.start
INTERNALERROR> E                     stop = call.stop
INTERNALERROR> E                     keywords = {x: 1 for x in item.keywords}
INTERNALERROR> E                     excinfo = call.excinfo
INTERNALERROR> E                     sections = []
INTERNALERROR> E                     if not call.excinfo:
INTERNALERROR> E                         outcome: Literal["passed", "failed", "skipped"] = "passed"
INTERNALERROR> E                         longrepr: Union[
INTERNALERROR> E                             None,
INTERNALERROR> E                             ExceptionInfo[BaseException],
INTERNALERROR> E                             Tuple[str, int, str],
INTERNALERROR> E                             str,
INTERNALERROR> E                             TerminalRepr,
INTERNALERROR> E                         ] = None
INTERNALERROR> E                     else:
INTERNALERROR> E                         if not isinstance(excinfo, ExceptionInfo):
INTERNALERROR> E                             outcome = "failed"
INTERNALERROR> E                             longrepr = excinfo
INTERNALERROR> E                         elif isinstance(excinfo.value, skip.Exception):
INTERNALERROR> E                             outcome = "skipped"
INTERNALERROR> E                             r = excinfo._getreprcrash()
INTERNALERROR> E                             assert (
INTERNALERROR> E                                 r is not None
INTERNALERROR> E                             ), "There should always be a traceback entry for skipping a test."
INTERNALERROR> E                             if excinfo.value._use_item_location:
INTERNALERROR> E                                 path, line = item.reportinfo()[:2]
INTERNALERROR> E                                 assert line is not None
INTERNALERROR> E                                 longrepr = os.fspath(path), line + 1, r.message
INTERNALERROR> E                             else:
INTERNALERROR> E                                 longrepr = (str(r.path), r.lineno, r.message)
INTERNALERROR> E                         else:
INTERNALERROR> E                             outcome = "failed"
INTERNALERROR> E                             if call.when == "call":
INTERNALERROR> E             >                   longrepr = item.repr_failure(excinfo)
INTERNALERROR> E
INTERNALERROR> E             /usr/lib/python3.8/site-packages/_pytest/reports.py:362:
INTERNALERROR> E             _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR> E
INTERNALERROR> E             self = <DataDrivenTestCase testTypedPkgNoSitePkgsIgnoredImports>
INTERNALERROR> E             excinfo = <ExceptionInfo Exception("Failed to create venv.\nError: Command '['/tmp/tmp_uvwwx1i/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.\n") tblen=14>
INTERNALERROR> E             style = None
INTERNALERROR> E
INTERNALERROR> E                 def repr_failure(self, excinfo: Any, style: Any | None = None) -> str:
INTERNALERROR> E                     if isinstance(excinfo.value, SystemExit):
INTERNALERROR> E                         # We assume that before doing exit() (which raises SystemExit) we've printed
INTERNALERROR> E                         # enough context about what happened so that a stack trace is not useful.
INTERNALERROR> E                         # In particular, uncaught exceptions during semantic analysis or type checking
INTERNALERROR> E                         # call exit() and they already print out a stack trace.
INTERNALERROR> E                         excrepr = excinfo.exconly()
INTERNALERROR> E                     elif isinstance(excinfo.value, pytest.fail.Exception) and not excinfo.value.pytrace:
INTERNALERROR> E                         excrepr = excinfo.exconly()
INTERNALERROR> E                     else:
INTERNALERROR> E             >           self.parent._prunetraceback(excinfo)
INTERNALERROR> E             E           AttributeError: 'DataFileCollector' object has no attribute '_prunetraceback'
INTERNALERROR> E
INTERNALERROR> E             /home/tkloczko/rpmbuild/BUILD/mypy-1.4.1/mypy/test/data.py:392: AttributeError
INTERNALERROR> E           assert False
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/xdist/dsession.py:197: AssertionError
.INTERNALERROR> config = <_pytest.config.Config object at 0x7f33250c3970>, doit = <function _main at 0x7f332604cc10>
INTERNALERROR>
INTERNALERROR>     def wrap_session(
INTERNALERROR>         config: Config, doit: Callable[[Config, "Session"], Optional[Union[int, ExitCode]]]
INTERNALERROR>     ) -> Union[int, ExitCode]:
INTERNALERROR>         """Skeleton command line program."""
INTERNALERROR>         session = Session.from_config(config)
INTERNALERROR>         session.exitstatus = ExitCode.OK
INTERNALERROR>         initstate = 0
INTERNALERROR>         try:
INTERNALERROR>             try:
INTERNALERROR>                 config._do_configure()
INTERNALERROR>                 initstate = 1
INTERNALERROR>                 config.hook.pytest_sessionstart(session=session)
INTERNALERROR>                 initstate = 2
INTERNALERROR> >               session.exitstatus = doit(config, session) or 0
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/_pytest/main.py:270:
INTERNALERROR> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR>
INTERNALERROR> config = <_pytest.config.Config object at 0x7f33250c3970>, session = <Session mypy-1.4.1 exitstatus=<ExitCode.INTERNAL_ERROR: 3> testsfailed=0 testscollected=11206>
INTERNALERROR>
INTERNALERROR>     def _main(config: Config, session: "Session") -> Optional[Union[int, ExitCode]]:
INTERNALERROR>         """Default command line protocol for initialization, session,
INTERNALERROR>         running tests and reporting."""
INTERNALERROR>         config.hook.pytest_collection(session=session)
INTERNALERROR> >       config.hook.pytest_runtestloop(session=session)
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/_pytest/main.py:324:
INTERNALERROR> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR>
INTERNALERROR> self = <_HookCaller 'pytest_runtestloop'>, args = (), kwargs = {'session': <Session mypy-1.4.1 exitstatus=<ExitCode.INTERNAL_ERROR: 3> testsfailed=0 testscollected=11206>}
INTERNALERROR> argname = 'session', firstresult = True
INTERNALERROR>
INTERNALERROR>     def __call__(self, *args, **kwargs):
INTERNALERROR>         if args:
INTERNALERROR>             raise TypeError("hook calling supports only keyword arguments")
INTERNALERROR>         assert not self.is_historic()
INTERNALERROR>
INTERNALERROR>         # This is written to avoid expensive operations when not needed.
INTERNALERROR>         if self.spec:
INTERNALERROR>             for argname in self.spec.argnames:
INTERNALERROR>                 if argname not in kwargs:
INTERNALERROR>                     notincall = tuple(set(self.spec.argnames) - kwargs.keys())
INTERNALERROR>                     warnings.warn(
INTERNALERROR>                         "Argument(s) {} which are declared in the hookspec "
INTERNALERROR>                         "can not be found in this hook call".format(notincall),
INTERNALERROR>                         stacklevel=2,
INTERNALERROR>                     )
INTERNALERROR>                     break
INTERNALERROR>
INTERNALERROR>             firstresult = self.spec.opts.get("firstresult")
INTERNALERROR>         else:
INTERNALERROR>             firstresult = False
INTERNALERROR>
INTERNALERROR> >       return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/pluggy/_hooks.py:265:
INTERNALERROR> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR>
INTERNALERROR> self = <_pytest.config.PytestPluginManager object at 0x7f33261c2490>, hook_name = 'pytest_runtestloop'
INTERNALERROR> methods = [<HookImpl plugin_name='main', plugin=<module '_pytest.main' from '/usr/lib/python3.8/site-packages/_pytest/main.py'>>...3324b26640>>, <HookImpl plugin_name='logging-plugin', plugin=<_pytest.logging.LoggingPlugin object at 0x7f3324a2f0a0>>]
INTERNALERROR> kwargs = {'session': <Session mypy-1.4.1 exitstatus=<ExitCode.INTERNAL_ERROR: 3> testsfailed=0 testscollected=11206>}, firstresult = True
INTERNALERROR>
INTERNALERROR>     def _hookexec(self, hook_name, methods, kwargs, firstresult):
INTERNALERROR>         # called from all hookcaller instances.
INTERNALERROR>         # enable_tracing will set its own wrapping function at self._inner_hookexec
INTERNALERROR> >       return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/pluggy/_manager.py:80:
INTERNALERROR> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR>
INTERNALERROR> self = <xdist.dsession.DSession object at 0x7f3324b26640>
INTERNALERROR>
INTERNALERROR>     @pytest.hookimpl
INTERNALERROR>     def pytest_runtestloop(self):
INTERNALERROR>         self.sched = self.config.hook.pytest_xdist_make_scheduler(
INTERNALERROR>             config=self.config, log=self.log
INTERNALERROR>         )
INTERNALERROR>         assert self.sched is not None
INTERNALERROR>
INTERNALERROR>         self.shouldstop = False
INTERNALERROR>         while not self.session_finished:
INTERNALERROR> >           self.loop_once()
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/xdist/dsession.py:122:
INTERNALERROR> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR>
INTERNALERROR> self = <xdist.dsession.DSession object at 0x7f3324b26640>
INTERNALERROR>
INTERNALERROR>     def loop_once(self):
INTERNALERROR>         """Process one callback from one of the workers."""
INTERNALERROR>         while 1:
INTERNALERROR>             if not self._active_nodes:
INTERNALERROR>                 # If everything has died stop looping
INTERNALERROR>                 self.triggershutdown()
INTERNALERROR>                 raise RuntimeError("Unexpectedly no active workers available")
INTERNALERROR>             try:
INTERNALERROR>                 eventcall = self.queue.get(timeout=2.0)
INTERNALERROR>                 break
INTERNALERROR>             except Empty:
INTERNALERROR>                 continue
INTERNALERROR>         callname, kwargs = eventcall
INTERNALERROR>         assert callname, kwargs
INTERNALERROR>         method = "worker_" + callname
INTERNALERROR>         call = getattr(self, method)
INTERNALERROR>         self.log("calling method", method, kwargs)
INTERNALERROR> >       call(**kwargs)
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/xdist/dsession.py:145:
INTERNALERROR> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INTERNALERROR>
INTERNALERROR> self = <xdist.dsession.DSession object at 0x7f3324b26640>, node = <WorkerController gw4>
INTERNALERROR>
INTERNALERROR>     def worker_workerfinished(self, node):
INTERNALERROR>         """Emitted when node executes its pytest_sessionfinish hook.
INTERNALERROR>
INTERNALERROR>         Removes the node from the scheduler.
INTERNALERROR>
INTERNALERROR>         The node might not be in the scheduler if it had not emitted
INTERNALERROR>         workerready before shutdown was triggered.
INTERNALERROR>         """
INTERNALERROR>         self.config.hook.pytest_testnodedown(node=node, error=None)
INTERNALERROR>         if node.workeroutput["exitstatus"] == 2:  # keyboard-interrupt
INTERNALERROR>             self.shouldstop = f"{node} received keyboard-interrupt"
INTERNALERROR>             self.worker_errordown(node, "keyboard-interrupt")
INTERNALERROR>             return
INTERNALERROR>         if node in self.sched.nodes:
INTERNALERROR>             crashitem = self.sched.remove_node(node)
INTERNALERROR> >           assert not crashitem, (crashitem, node)
INTERNALERROR> E           AssertionError: ('mypy/test/testpep561.py::PEP561Suite::pep561.test::testTypedPkgNoSitePkgsIgnoredImports', <WorkerController gw4>)
INTERNALERROR> E           assert not 'mypy/test/testpep561.py::PEP561Suite::pep561.test::testTypedPkgNoSitePkgsIgnoredImports'
INTERNALERROR>
INTERNALERROR> /usr/lib/python3.8/site-packages/xdist/dsession.py:184: AssertionError

PS. Maybe it would be good to add to issue ticket template note about provide --fulltrace output in cases of some errors like internal errors? (maybe more? 🤔)

[The-Compiler]

mypy is using private pytest APIs which were removed in fcada1e.

This was already fixed here: python/mypy#15611

[kloczek]

Thank you 👍 😄