Buildbots are crashing after #99378

[sobolevn]

Right now multiple tests / buildbots are crashing:

• https://github.com/python/cpython/actions/runs/3481701691/jobs/5823130703
• https://buildbot.python.org/all/#/builders/49/builds/4083

Output:

test_fork_at_exit (test.test_threading.ThreadTests.test_fork_at_exit) ... ok
python: ./Include/internal/pycore_pyerrors.h:22: _PyErr_Occurred: Assertion `tstate != NULL' failed.
Fatal Python error: Aborted
Current thread 0x000003ffb787f900 (most recent call first):
  <no Python frame>
Thread 0x000003ffb9f78b20 (most recent call first):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/test_threading.py", line 847 in test_frame_tstate_tracing
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/case.py", line 579 in _callTestMethod
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/case.py", line 623 in run
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/case.py", line 678 in __call__
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/suite.py", line 122 in run
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/suite.py", line 84 in __call__
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/suite.py", line 122 in run
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/suite.py", line 84 in __call__
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/suite.py", line 122 in run
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/suite.py", line 84 in __call__
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/unittest/runner.py", line 208 in run
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/support/__init__.py", line 1100 in _run_suite
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/support/__init__.py", line 1226 in run_unittest
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/runtest.py", line 281 in _test_module
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/runtest.py", line 317 in _runtest_inner2
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/runtest.py", line 360 in _runtest_inner
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/runtest.py", line 235 in _runtest
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/runtest.py", line 265 in runtest
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/main.py", line 352 in rerun_failed_tests
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/main.py", line 754 in _main
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/main.py", line 709 in main
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/libregrtest/main.py", line 773 in main
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/test/__main__.py", line 2 in <module>
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/runpy.py", line 88 in _run_code
  File "/home/dje/cpython-buildarea/3.x.edelsohn-debian-z/build/Lib/runpy.py", line 198 in _run_module_as_main
Extension modules: _testcapi (total: 1)
make: *** [Makefile:1888: buildbottest] Aborted

Looks like it has started after #99378
CC @zooba and @gpshead