@zooba: FYI I fixed test_support and test_tomllib without touching USE_STACKCHECK macro nor ceval.c. I just adapted support functions and test_support.

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x RHEL7 LTO 3.11 has failed when building commit 190e8fb.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/924/builds/1078) and take a look at the build logs.
4. Check if the failure is related to this commit (190e8fb) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/924/builds/1078

Summary of the results of the build (if available):

==

Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.11.edelsohn-rhel-z.lto/build/Lib/multiprocessing/resource_tracker.py", line 239, in main
    cache[rtype].remove(name)
KeyError: '/psm_7649cf26'


Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.11.edelsohn-rhel-z.lto/build/Lib/multiprocessing/resource_tracker.py", line 239, in main
    cache[rtype].remove(name)
KeyError: '/psm_b2df9387'


Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.11.edelsohn-rhel-z.lto/build/Lib/multiprocessing/resource_tracker.py", line 239, in main
    cache[rtype].remove(name)
KeyError: '/psm_5cd3b372'