CI takes forever to run, never finishes

[itamarst]

Seems to happen on unit test runner on GHA, macOS and Windows only. E.g. ​https://github.com/tahoe-lafs/tahoe-lafs/actions/runs/4853010385/jobs/8648700749?pr=1278 is macOS Python 3.11:

allmydata.test.test_system.HTTPSystemTest.test_filesystem ... Traceback (most recent call last):
  Failure: twisted.internet.defer.TimeoutError: <allmydata.test.test_system.HTTPSystemTest testMethod=test_filesystem> (test_filesystem) still running at 180.0 secs

[itamarst]

More examples:

​https://github.com/tahoe-lafs/tahoe-lafs/actions/runs/4853014142/jobs/8648709198?pr=1293 : macOS 3.11

  allmydata.test.test_system.HTTPSystemTest.test_filesystem ... Traceback (most recent call last):
  Failure: twisted.internet.defer.TimeoutError: <allmydata.test.test_system.HTTPSystemTest testMethod=test_filesystem> (test_filesystem) still running at 180.0 secs

​https://github.com/tahoe-lafs/tahoe-lafs/actions/runs/4853014142/jobs/8648708998?pr=1293 : windows 3.11

allmydata.test.test_system.HTTPSystemTest.test_filesystem ... Traceback (most recent call last):
  Failure: twisted.internet.defer.TimeoutError: <allmydata.test.test_system.HTTPSystemTest testMethod=test_filesystem> (test_filesystem) still running at 180.0 secs
  Error: Traceback (most recent call last):
  Failure: twisted.trial.util.DirtyReactorAggregateError: Reactor was unclean.

There's also a

     File "D:\a\tahoe-lafs\tahoe-lafs\.tox\py311-coverage\Lib\site-packages\twisted\python\util.py", line 767, in untilConcludes
      return f(*a, **kw)
  builtins.OSError: [Errno 28] No space left on device

But that might be when it gets cancelled?

[GitHub <noreply@…>]

In ff1b7918/trunk:

Merge pull request #1296 from tahoe-lafs/4022-freezing-test

Fix (hopefully) for freezing CI runners

Fixes ticket:4022