==================================================== test session starts ====================================================
platform linux -- Python 3.9.0, pytest-6.1.1, py-1.9.0, pluggy-0.13.1
rootdir: /home/miurahr/Projects/py3911
collected 2 items

test_main.py .Fatal Python error: Segmentation fault

Current thread 0x00007f047926b740 (most recent call first):
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/nodes.py", line 301 in <genexpr>
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/skipping.py", line 202 in evaluate_xfail_marks
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/skipping.py", line 258 in pytest_runtest_call
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/callers.py", line 203 in _multicall
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/runner.py", line 256 in <lambda>
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/runner.py", line 310 in from_call
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/runner.py", line 255 in call_runtest_hook
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/runner.py", line 216 in call_and_report
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/runner.py", line 127 in runtestprotocol
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/runner.py", line 110 in pytest_runtest_protocol
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/main.py", line 338 in pytest_runtestloop
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/main.py", line 313 in _main
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/main.py", line 257 in wrap_session
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/main.py", line 306 in pytest_cmdline_main
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/config/__init__.py", line 164 in main
  File "/home/miurahr/.virtualenvs/py3911/lib/python3.9/site-packages/_pytest/config/__init__.py", line 187 in console_main
  File "/home/miurahr/.virtualenvs/py3911/bin/pytest", line 8 in <module>
Segmentation fault (Core dump)