gh-109739: regrtest disables load tracker if refleak

[vstinner]

Disable the Windwos load tracker when hunting reference leak.

• Issue: test_regrtest: test_huntrleaks() fails randomly: leaked [9, 1, 1] references #109739

[vstinner]

Windows x64 failed: issue #109401

ERROR: test_default_timeout (test.test_threading.BarrierTests.test_default_timeout)

[vstinner]

macOS failed: test.test_concurrent_futures.test_deadlock failed (env changed): issue gh-109832.

Windows x64 failed again: it's a new issue, issue gh-109878, see below:

FAIL: test_wait_for_timeout_less_then_0_or_0_coroutine_do_not_started (test.test_asyncio.test_waitfor.AsyncioWaitForTest.test_wait_for_timeout_less_then_0_or_0_coroutine_do_not_started)
(...)
AssertionError: 0.1879999999998745 not less than 0.1

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x SLES 3.x has failed when building commit 4091deb.

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/540/builds/6633) and take a look at the build logs.
4. Check if the failure is related to this commit (4091deb) 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/540/builds/6633

Failed tests:

• test_tools

Failed subtests:

• test_freeze_simple_script - test.test_tools.test_freeze.TestFreeze.test_freeze_simple_script

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

==

Click to see traceback logs

Traceback (most recent call last):
File "/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/Lib/test/test_tools/test_freeze.py", line 32, in test_freeze_simple_script
outdir, scriptfile, python = helper.prepare(script, outdir)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/Tools/freeze/test/freeze.py", line 146, in prepare
copy_source_tree(srcdir, SRCDIR)
File "/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/Tools/freeze/test/freeze.py", line 95, in copy_source_tree
shutil.copytree(oldroot, newroot, ignore=ignore_non_src)
File "/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/Lib/shutil.py", line 588, in copytreereturn _copytree(entries=entries, src=src, dst=dst, symlinks=symlinks,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/Lib/shutil.py", line 542, in _copytreeraise Error(errors)
shutil.Error: [('/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/build/test_python_44669æ/@test_44669_tmpæ/brokenLinkLoop', '/tmp/test_python_agyxig8m/tmpjzcaj6lc/cpython/build/test_python_44669æ/@test_44669_tmpæ/brokenLinkLoop', "[Errno 2] No such file or directory: '/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/build/test_python_44669æ/@test_44669_tmpæ/brokenLinkLoop'"), (<DirEntry '@test_44669_tmpæ'>, '/tmp/test_python_agyxig8m/tmpjzcaj6lc/cpython/build/test_python_44669æ/@test_44669_tmpæ', "[Errno 2] No such file or directory: '/home/dje/cpython-buildarea/3.x.edelsohn-sles-z/build/build/test_python_44669æ/@test_44669_tmpæ'")]

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x RHEL8 LTO + PGO 3.x has failed when building commit 4091deb.

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/442/builds/5042) and take a look at the build logs.
4. Check if the failure is related to this commit (4091deb) 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/442/builds/5042

Failed tests:

• test_eintr

Failed subtests:

• test_flock - main.FNTLEINTRTest.test_flock
• test_all - test.test_eintr.EINTRTests.test_all

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

==

Click to see traceback logs

Traceback (most recent call last):
File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto-pgo/build/Lib/multiprocessing/resource_tracker.py", line 209, in main
cache[rtype].remove(name)
KeyError: '/psm_0a287f08'
Traceback (most recent call last):
File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto-pgo/build/Lib/test/test_eintr.py", line 17, in test_all
script_helper.run_test_script(script)
File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto-pgo/build/Lib/test/support/script_helper.py", line 300, in run_test_scriptraiseAssertionError(f"{name} failed")
AssertionError: script _test_eintr.py failed
Traceback (most recent call last):
File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto-pgo/build/Lib/test/_test_eintr.py", line 526, in test_flockself._lock(fcntl.flock, "flock")
File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto-pgo/build/Lib/test/_test_eintr.py", line 515, in _lockself.assertGreaterEqual(dt, self.sleep_time)
AssertionError: 0.19782951299566776 not greater than or equal to 0.2