• OtherTest.test_answer_challenge_auth_failure: https://github.com/python/cpython/pull/28060/checks?check_run_id=3461402909#step:6:1230
• OtherTest.test_deliver_challenge_auth_failure: https://github.com/python/cpython/pull/28060/checks?check_run_id=3461402909#step:6:1231
• TestSyncManagerTypes.test_semaphore: https://github.com/python/cpython/pull/28060/checks?check_run_id=3461402850#step:5:192
• WithManagerTestBarrier.test_barrier_10: https://github.com/python/cpython/pull/28060/checks?check_run_id=3461402909#step:6:1290

Both new Windows failures were hidden under @hashlib_helper.requires_hashdigest('md5'):

 ======================================================================
FAIL: test_shared_memory_basics (test.test_multiprocessing_spawn.WithProcessesTestSharedMemory)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "D:\a\cpython\cpython\lib\test\_test_multiprocessing.py", line 3794, in test_shared_memory_basics
    self.assertEqual(sms.size, sms2.size)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: 512 != 4096

======================================================================
FAIL: test_checksum_fodder (test.test_tools.test_md5sum.MD5SumTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "D:\a\cpython\cpython\lib\test\test_tools\test_md5sum.py", line 41, in test_checksum_fodder
    self.assertIn(part.encode(), out)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: b'@test_1772_tmp\xc3\xa6' not found in b'd38dae2eb1ab346a292ef6850f9e1a0d @test_1772_tmp\xe6\\md5sum.fodder\r\n'

What should I do with them? Ignore them for now and create new bug reports?

I think it is safe to decorate the failed tests with

@unittest.skipIf(sys.platform == "win32", "test is broken on Windows")

We will fix them in separate issues.

I am not seeing any references of newly-unignored tests in Ubuntu / MacOS builds:

1. Ubuntu: https://github.com/python/cpython/runs/3462443201
2. MacOS: https://github.com/python/cpython/runs/3462443151

For some reason they are only executed on Windows. Is it supposed to be this way?

🤖 New build scheduled with the buildbot fleet by @serhiy-storchaka for commit d86ac43 🤖

If you want to schedule another build, you need to add the ":hammer: test-with-buildbots" label again.

Thanks @sobolevn for the PR, and @serhiy-storchaka for merging it 🌮🎉.. I'm working now to backport this PR to: 3.9, 3.10.
🐍🍒⛏🤖

Sorry, @sobolevn and @serhiy-storchaka, I could not cleanly backport this to 3.9 due to a conflict.
Please backport using cherry_picker on command line.
cherry_picker dd7b816ac87e468e2fa65ce83c2a03fe1da8503e 3.9

GH-28168 is a backport of this pull request to the 3.10 branch.

Thanks @sobolevn for the PR, and @serhiy-storchaka for merging it 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

Sorry @sobolevn and @serhiy-storchaka, I had trouble checking out the 3.9 backport branch.
Please backport using cherry_picker on command line.
cherry_picker dd7b816ac87e468e2fa65ce83c2a03fe1da8503e 3.9

GH-28169 is a backport of this pull request to the 3.9 branch.

Thanks, @serhiy-storchaka! It was a pleasure 🤝