Exception sink test is flaky

[Eric-Arellano]

test_fails_ctrl_c_on_import seems to fail ~50% of our CI runs with an error like this:

>       assert "" == read_file(pid_specific_log_file)
326
E       assert equals failed
327
E         ''                               'Fatal Python error: Aborted\n\ 
328
E                                          nCurrent thread 0x00007f853deac 
329
E                                          700 (most recent call first):\n 
330
E                                          \nThread 0x00007f8541d6e740 (mo 
331
E                                          st recent call first):\n  File  
332
E                                          "/opt/hostedtoolcache/Python/3. 
333
E                                          7.10/x64/lib/python3.7/logging/ 
334
E                                          __init__.py", line 766 in _remo 
335
E                                          veHandlerRef\n'
336

337
src/python/pants/base/exception_sink_integration_test.py:127: AssertionError

[Eric-Arellano]

Oh!! I suspect this flake was introduced with #12085. I haven't verified that, but I noticed CI has only been unusually unstable the past ~2 days and this was merged 3 days ago.

[Eric-Arellano]

This is still flaking. Going to skip the test for now. It only started flaking recently, so it should be bisectable at least.

[Eric-Arellano]

Running ./pants test --force --output=all src/python/pants/base/exception_sink_integration_test.py -- -k test_fails_ctrl_c_on_import -vv doesn't fail for me on both macOS and Ubuntu. Ran 20 times each.