test failure in python-ipython 8.5.0 on powerpc64le (flaky?)

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

__________________ test_debug_magic_passes_through_generators __________________

@contextmanager

def _wrap_ptyprocess_err():

"""Turn ptyprocess errors into our own ExceptionPexpect errors"""

try:

> yield

/gnu/store/ygac2wk64z8bwz3i1v9qjghbqg8di2q7-python-pexpect-4.8.0/lib/python3.10/site-packages/pexpect/pty_spawn.py:23:

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

self = <pexpect.pty_spawn.spawn object at 0x7fff55eaa080>, force = True

def close(self, force=True):

'''This closes the connection with the child application. Note that

calling close() more than once is valid. This emulates standard Python

behavior with files. Set force to True if you want to make sure that

the child is terminated (SIGKILL is sent if the child ignores SIGHUP

and SIGINT). '''

self.flush()

with _wrap_ptyprocess_err():

# PtyProcessError may be raised if it is not possible to terminate

# the child.

> self.ptyproc.close(force=force)

/gnu/store/ygac2wk64z8bwz3i1v9qjghbqg8di2q7-python-pexpect-4.8.0/lib/python3.10/site-packages/pexpect/pty_spawn.py:328:

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

self = PtyProcess.spawn(['/gnu/store/slnz6nv5lmj38px3yy43g4b5lmfrj09v-python-wrapper-3.10.7/bin/python', '-m', 'IPython', '--...PYTEST_CURRENT_TEST': 'IPython/terminal/tests/test_debug_magic.py::test_debug_magic_passes_through_generators (call)'})

force = True

def close(self, force=True):

'''This closes the connection with the child application. Note that

calling close() more than once is valid. This emulates standard Python

behavior with files. Set force to True if you want to make sure that

the child is terminated (SIGKILL is sent if the child ignores SIGHUP

and SIGINT). '''

if not self.closed:

self.flush()

self.fileobj.close() # Closes the file descriptor

# Give kernel time to update process status.

time.sleep(self.delayafterclose)

if self.isalive():

if not self.terminate(force):

> raise PtyProcessError('Could not terminate the child.')

E ptyprocess.ptyprocess.PtyProcessError: Could not terminate the child.

/gnu/store/hlmc99r0g2b5cy2j78366036sgjgm7cn-python-ptyprocess-0.5.2/lib/python3.10/site-packages/ptyprocess/ptyprocess.py:393: PtyProcessError

During handling of the above exception, another exception occurred:

@skip_win32

def test_debug_magic_passes_through_generators():

"""

This test that we can correctly pass through frames of a generator post-mortem.

"""

import pexpect

import re

in_prompt = re.compile(br'In ?\[\d+\]:')

ipdb_prompt = 'ipdb>'

env = os.environ.copy()

child = pexpect.spawn(sys.executable, ['-m', 'IPython', '--colors=nocolor', '--simple-prompt'],

env=env)

child.timeout = 15 * IPYTHON_TESTING_TIMEOUT_SCALE

child.expect(in_prompt)

child.timeout = 2 * IPYTHON_TESTING_TIMEOUT_SCALE

child.sendline("def f(x):")

child.sendline(" raise Exception")

child.sendline("")

child.expect(in_prompt)

child.sendline("gen = (f(x) for x in [0])")

child.sendline("")

child.expect(in_prompt)

child.sendline("for x in gen:")

child.sendline(" pass")

child.sendline("")

child.timeout = 10 * IPYTHON_TESTING_TIMEOUT_SCALE

child.expect('Exception:')

child.expect(in_prompt)

child.sendline(r'%debug')

child.expect('----> 2 raise Exception')

child.expect(ipdb_prompt)

child.sendline('u')

child.expect_exact(r'----> 1 gen = (f(x) for x in [0])')

child.expect(ipdb_prompt)

child.sendline('u')

child.expect_exact('----> 1 for x in gen:')

child.expect(ipdb_prompt)

child.sendline('u')

child.expect_exact('*** Oldest frame')

child.expect(ipdb_prompt)

child.sendline('exit')

child.expect(in_prompt)

child.sendline('exit')

> child.close()

IPython/terminal/tests/test_debug_magic.py:80:

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

/gnu/store/ygac2wk64z8bwz3i1v9qjghbqg8di2q7-python-pexpect-4.8.0/lib/python3.10/site-packages/pexpect/pty_spawn.py:325: in close

with _wrap_ptyprocess_err():

/gnu/store/6mwp6qhfds9pp7xmj93gs9hvdys9yphj-python-3.10.7/lib/python3.10/contextlib.py:153: in __exit__

self.gen.throw(typ, value, traceback)

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

@contextmanager

def _wrap_ptyprocess_err():

"""Turn ptyprocess errors into our own ExceptionPexpect errors"""

try:

yield

except ptyprocess.PtyProcessError as e:

> raise ExceptionPexpect(*e.args)

E pexpect.exceptions.ExceptionPexpect: Could not terminate the child.

/gnu/store/ygac2wk64z8bwz3i1v9qjghbqg8di2q7-python-pexpect-4.8.0/lib/python3.10/site-packages/pexpect/pty_spawn.py:25: ExceptionPexpect

[...]

FAILED IPython/terminal/tests/test_debug_magic.py::test_debug_magic_passes_through_generators

= 1 failed, 1002 passed, 67 skipped, 1 xpassed, 130 warnings in 305.79s (0:05:05) =

error: in phase 'check': uncaught exception: