python-trio transient test failures

=================================== FAILURES ===================================

____________________ test_wait_reapable_fails[open_process] ____________________

[gw15] linux -- Python 3.10.7 /gnu/store/375350pi1l1izgnx6dnsqmg4xjyprx8q-python-wrapper-3.10.7/bin/python

background_process = <function open_process_then_kill at 0x7ffff40fed40>

@pytest.mark.skipif(not posix, reason="POSIX specific")

@background_process_param

async def test_wait_reapable_fails(background_process):

> old_sigchld = signal.signal(signal.SIGCHLD, signal.SIG_IGN)

trio/tests/test_subprocess.py:449:

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

signalnum = <Signals.SIGCHLD: 17>, handler = <Handlers.SIG_IGN: 1>

@_wraps(_signal.signal)

def signal(signalnum, handler):

> handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))

E ValueError: signal only works in main thread of the main interpreter

/gnu/store/91wasjkmy50p8fq0rf9jby80mnmq1fxr-python-3.10.7/lib/python3.10/signal.py:56: ValueError

_______________ test_wait_reapable_fails[run_process in nursery] _______________

[gw15] linux -- Python 3.10.7 /gnu/store/375350pi1l1izgnx6dnsqmg4xjyprx8q-python-wrapper-3.10.7/bin/python

background_process = <function run_process_in_nursery at 0x7ffff40fee60>

@pytest.mark.skipif(not posix, reason="POSIX specific")

@background_process_param

async def test_wait_reapable_fails(background_process):

> old_sigchld = signal.signal(signal.SIGCHLD, signal.SIG_IGN)

trio/tests/test_subprocess.py:449:

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

signalnum = <Signals.SIGCHLD: 17>, handler = <Handlers.SIG_IGN: 1>

@_wraps(_signal.signal)

def signal(signalnum, handler):

> handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))

E ValueError: signal only works in main thread of the main interpreter

/gnu/store/91wasjkmy50p8fq0rf9jby80mnmq1fxr-python-3.10.7/lib/python3.10/signal.py:56: ValueError

=========================== short test summary info ============================

FAILED trio/tests/test_subprocess.py::test_wait_reapable_fails[open_process]

FAILED trio/tests/test_subprocess.py::test_wait_reapable_fails[run_process in nursery]

================== 2 failed, 371 passed, 17 skipped in 3.82s ===================