This was a routine master build, RP's sys.modules fixes were not present.

https://bugs.python.org/issue43546

has similarities and the comment:

"""
It looks like method _ModuleLock.acquire() was re-entered in the same thread.

* Enter acquire() first time, set _blocking_on[tid].
* Trigger some callback (profiler, debugger, tracemalloc) which uses import and calls acquire() again from the same thread.
* Enter acquire() second time, set _blocking_on[tid].
* Delete _blocking_on[tid] and leave the second acquire().
* Try to leave the first acquire() and delete _blocking_on[tid] again.
"""

is similar.

We've also see this in memres bitbake testing:

https://autobuilder.yoctoproject.org/typhoon/#/builders/79/builds/3382/steps/15/logs/stdio

which is in oe.data and in the OE_IMPORTS instead of oe,gpg_sign in a different import location.

The second traceback, different code but probably the same issue:

  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/lib/oeqa/selftest/cases/signing.py", line 72, in test_signing_packages
    self.setup_gpg()
  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/lib/oeqa/selftest/cases/signing.py", line 32, in setup_gpg
    nsysroot = get_bb_var("RECIPE_SYSROOT_NATIVE", "gnupg-native")
  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/lib/oeqa/utils/commands.py", line 281, in get_bb_var
    return get_bb_vars([var], target, postconfig)[var]
  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/lib/oeqa/utils/commands.py", line 243, in get_bb_vars
    bbenv = get_bb_env(target, postconfig=postconfig)
  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/lib/oeqa/utils/commands.py", line 237, in get_bb_env
    return bitbake("-e %s" % target, postconfig=postconfig).output
  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/lib/oeqa/utils/commands.py", line 229, in bitbake
    return runCmd(cmd, ignore_status, timeout, output_log=output_log, **options)
  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/lib/oeqa/utils/commands.py", line 207, in runCmd
    raise AssertionError("Command '%s' returned non-zero exit status %d:\n%s" % (command, result.status, exc_output))
AssertionError: Command 'bitbake  -e gnupg-native' returned non-zero exit status 1:
NOTE: Reconnecting to bitbake server...
ERROR: Unable to parse Var <OE_IMPORTED[:=]>
Traceback (most recent call last):
  File "Var <OE_IMPORTED[:=]>", line 1, in <module>
  File "/home/pokybuild/yocto-worker/oe-selftest-centos/build/meta/classes/base.bbclass", line 30, in oe_import(d=<bb.data_smart.DataSmart object at 0x7fba6a689760>):
                 # Make a python object accessible from the metadata
    >            bb.utils._context[toimport.split(".", 1)[0]] = __import__(toimport)
             except AttributeError as e:
  File "<frozen importlib._bootstrap>", line 1004, in _find_and_load(name='oe.path', import_=<built-in function __import__>)
  File "<frozen importlib._bootstrap>", line 158, in _ModuleLockManager.__enter__()
  File "<frozen importlib._bootstrap>", line 110, in _ModuleLock.acquire()
bb.data_smart.ExpansionError: Failure expanding variable OE_IMPORTED[:=], expression was ${@oe_import(d)} which triggered exception KeyError: 140438942700992
The variable dependency chain for the failure is: OE_IMPORTED[:=]

https://bugs.python.org/issue47195

https://autobuilder.yoctoproject.org/typhoon/#/builders/86/builds/3358/steps/14/logs/stdio 

  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/lib/oeqa/selftest/cases/devtool.py", line 1363, in test_devtool_deploy_target
    machine = get_bb_var('MACHINE')
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/lib/oeqa/utils/commands.py", line 281, in get_bb_var
    return get_bb_vars([var], target, postconfig)[var]
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/lib/oeqa/utils/commands.py", line 243, in get_bb_vars
    bbenv = get_bb_env(target, postconfig=postconfig)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/lib/oeqa/utils/commands.py", line 239, in get_bb_env
    return bitbake("-e", postconfig=postconfig).output
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/lib/oeqa/utils/commands.py", line 229, in bitbake
    return runCmd(cmd, ignore_status, timeout, output_log=output_log, **options)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/lib/oeqa/utils/commands.py", line 207, in runCmd
    raise AssertionError("Command '%s' returned non-zero exit status %d:\n%s" % (command, result.status, exc_output))
AssertionError: Command 'bitbake  -e' returned non-zero exit status 1:
NOTE: Reconnecting to bitbake server...
WARNING:   File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/bin/bitbake-server", line 52, in <module>
    bb.server.process.execServer(lockfd, readypipeinfd, lockname, sockname, timeout, xmlrpcinterface)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/server/process.py", line 558, in execServer
    server.run()
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/server/process.py", line 110, in run
    ret = self.main()
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/server/process.py", line 219, in main
    self.command_channel_reply.send(self.cooker.command.runCommand(command))
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/command.py", line 89, in runCommand
    self.cooker.updateCacheSync()
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cooker.py", line 1643, in updateCacheSync
    self.initConfigurationData()
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cooker.py", line 407, in initConfigurationData
    self.databuilder.parseBaseConfiguration()
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cookerdata.py", line 267, in parseBaseConfiguration
    self.data = self.parseConfigurationFiles(self.prefiles, self.postfiles)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cookerdata.py", line 452, in parseConfigurationFiles
    data = _inherit(bbclass, data)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cookerdata.py", line 162, in wrapped
    return func(fn, *args)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cookerdata.py", line 191, in _inherit
    bb.parse.BBHandler.inherit(bbclass, "configuration INHERITs", 0, data)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/parse/parse_py/BBHandler.py", line 63, in inherit
    include(fn, file, lineno, d, "inherit")
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/parse/parse_py/ConfHandler.py", line 67, in include
    include_single_file(parentfn, fn, lineno, data, error_out)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/parse/parse_py/ConfHandler.py", line 90, in include_single_file
    bb.parse.handle(fn, data, True)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/parse/__init__.py", line 107, in handle
    return h['handle'](fn, data, include)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/parse/parse_py/BBHandler.py", line 124, in handle
    statements.eval(d)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/parse/ast.py", line 19, in eval
    statement.eval(data)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/parse/ast.py", line 117, in eval
    val = e.expand(groupd["value"], key + "[:=]")
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/data_smart.py", line 477, in expand
    return self.expandWithRefs(s, varname).value
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/data_smart.py", line 454, in expandWithRefs
    s = __expand_python_regexp__.sub(varparse.python_sub, s)
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/data_smart.py", line 144, in python_sub
    value = utils.better_eval(codeobj, DataContext(self.d), {'d' : self.d})
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/utils.py", line 429, in better_eval
    return eval(source, ctx, locals)
  File "Var <OE_IMPORTED[:=]>", line 1, in <module>
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/classes/base.bbclass", line 26, in oe_import
    import oe.data
  File "<frozen importlib._bootstrap>", line 1024, in _find_and_load
  File "<frozen importlib._bootstrap>", line 171, in __enter__
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cooker.py", line 168, in acquire
    return orig_acquire(self)
  File "<frozen importlib._bootstrap>", line 110, in acquire
  File "/usr/lib64/python3.10/asyncio/base_events.py", line 685, in __del__
    _warn(f"unclosed event loop {self!r}", ResourceWarning, source=self)
  File "/usr/lib64/python3.10/warnings.py", line 112, in _showwarnmsg
    _showwarnmsg_impl(msg)
  File "/usr/lib64/python3.10/warnings.py", line 28, in _showwarnmsg_impl
    text = _formatwarnmsg(msg)
  File "/usr/lib64/python3.10/warnings.py", line 128, in _formatwarnmsg
    return _formatwarnmsg_impl(msg)
  File "/usr/lib64/python3.10/warnings.py", line 56, in _formatwarnmsg_impl
    import tracemalloc
  File "<frozen importlib._bootstrap>", line 1024, in _find_and_load
  File "<frozen importlib._bootstrap>", line 171, in __enter__
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cooker.py", line 167, in acquire
    bb.warn("\n".join(traceback.format_stack()))
ERROR: Unable to parse Var <OE_IMPORTED[:=]>
Traceback (most recent call last):
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/meta/classes/base.bbclass", line 26, in oe_import(d=<bb.data_smart.DataSmart object at 0x7fe4723c5270>):
     
    >    import oe.data
         for toimport in oe.data.typed_value("OE_IMPORTS", d):
  File "<frozen importlib._bootstrap>", line 1024, in _find_and_load(name='oe.data', import_=<built-in function __import__>)
  File "<frozen importlib._bootstrap>", line 171, in _ModuleLockManager.__enter__()
  File "/home/pokybuild/yocto-worker/oe-selftest-fedora/build/bitbake/lib/bb/cooker.py", line 168, in _ModuleLock.acquire():
                         bb.warn("\n".join(traceback.format_stack()))
    >                return orig_acquire(self)
     
  File "<frozen importlib._bootstrap>", line 123, in _ModuleLock.acquire()
bb.data_smart.ExpansionError: Failure expanding variable OE_IMPORTED[:=], expression was ${@oe_import(d)} which triggered exception KeyError: 140619389032256
The variable dependency chain for the failure is: OE_IMPORTED[:=]

which shows us it is from a warning in garbage collection from asycio

https://git.yoctoproject.org/poky/commit/?id=496cbc01ca0ffd2b582b9ab4c4e0f54db7b18b00
https://git.yoctoproject.org/poky/commit/?id=b868387c425cca35c06179b90d44422fbaf2a9ab