Fatal Python error: Segmentation fault
Current thread 0x00000001121c05c0 (most recent call first):
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/socketserver.py", line 470 in server_bind
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/http/server.py", line 136 in server_bind
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/socketserver.py", line 456 in __init__
File "/nix/store/ai2cvzkgzgjq4j38rwvgym81jj8vqs1r-python3.6-Werkzeug-0.12.2/lib/python3.6/site-packages/werkzeug/serving.py", line 504 in __init__
File "/nix/store/ai2cvzkgzgjq4j38rwvgym81jj8vqs1r-python3.6-Werkzeug-0.12.2/lib/python3.6/site-packages/werkzeug/serving.py", line 587 in make_server
File "/nix/store/ai2cvzkgzgjq4j38rwvgym81jj8vqs1r-python3.6-Werkzeug-0.12.2/lib/python3.6/site-packages/werkzeug/serving.py", line 699 in inner
File "/nix/store/ai2cvzkgzgjq4j38rwvgym81jj8vqs1r-python3.6-Werkzeug-0.12.2/lib/python3.6/site-packages/werkzeug/serving.py", line 739 in run_simple
File "/nix/store/2wsznll072jgsaqp3ypmd354s9yqw9vw-python3.6-Flask-0.12.2/lib/python3.6/site-packages/flask/app.py", line 841 in run
File "/nix/store/dsdjvybj8bp9cpqw3hzl2fjd0gns0p8d-python3.6-pytest-flask-0.14.0/lib/python3.6/site-packages/pytest_flask/fixtures.py", line 67 in worker
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/multiprocessing/process.py", line 93 in run
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/multiprocessing/process.py", line 258 in _bootstrap
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/multiprocessing/popen_fork.py", line 73 in _launch
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/multiprocessing/popen_fork.py", line 19 in __init__
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/multiprocessing/context.py", line 277 in _Popen
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/multiprocessing/context.py", line 223 in _Popen
File "/nix/store/ajn7df20f65rb00pjkayr82dppyszsn8-python3-3.6.9/lib/python3.6/multiprocessing/process.py", line 105 in start
File "/nix/store/dsdjvybj8bp9cpqw3hzl2fjd0gns0p8d-python3.6-pytest-flask-0.14.0/lib/python3.6/site-packages/pytest_flask/fixtures.py", line 72 in start
File "/Users/abathur/<intentionally snipped>/tests/conftest.py", line 963 in browser
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 775 in call_fixture_func
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 949 in pytest_fixture_setup
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/callers.py", line 187 in _multicall
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 86 in <lambda>
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 92 in _hookexec
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/hooks.py", line 286 in __call__
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 900 in execute
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 571 in _compute_fixture_value
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 490 in _get_active_fixturedef
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 880 in execute
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 571 in _compute_fixture_value
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 490 in _get_active_fixturedef
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 880 in execute
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 571 in _compute_fixture_value
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 490 in _get_active_fixturedef
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 474 in getfixturevalue
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 464 in _fillfixtures
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/fixtures.py", line 291 in fillfixtures
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/python.py", line 1427 in setup
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 366 in prepare
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 118 in pytest_runtest_setup
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/callers.py", line 187 in _multicall
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 86 in <lambda>
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 92 in _hookexec
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/hooks.py", line 286 in __call__
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 201 in <lambda>
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 229 in from_call
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 201 in call_runtest_hook
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 176 in call_and_report
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 89 in runtestprotocol
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/runner.py", line 80 in pytest_runtest_protocol
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/callers.py", line 187 in _multicall
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 86 in <lambda>
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 92 in _hookexec
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/hooks.py", line 286 in __call__
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/main.py", line 256 in pytest_runtestloop
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/callers.py", line 187 in _multicall
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 86 in <lambda>
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 92 in _hookexec
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/hooks.py", line 286 in __call__
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/main.py", line 235 in _main
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/main.py", line 191 in wrap_session
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/main.py", line 228 in pytest_cmdline_main
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/callers.py", line 187 in _multicall
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 86 in <lambda>
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/manager.py", line 92 in _hookexec
File "/nix/store/njj7nw68w2kxf8z6d2s1b5zw8l2dzw3m-python3.6-pluggy-0.13.0/lib/python3.6/site-packages/pluggy/hooks.py", line 286 in __call__
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/lib/python3.6/site-packages/_pytest/config/__init__.py", line 90 in main
File "/nix/store/j44z35nkdkn527j7r93iajm0sv6h0678-python3.6-pytest-5.2.1/bin/.pytest-wrapped", line 11 in <module>