small changes for timing

1 job for master in 24 minutes and 31 seconds (queued for 5 seconds)
Status Name Job ID Coverage
  Test
failed build #622505

00:24:31

 
Name Stage Failure
failed
build Test
    assert self.km is not None
AssertionError
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
File "/builds/nam/mop/.venv/lib/python3.9/site-packages/nbclient/client.py", line 364, in _async_cleanup_kernel
assert self.km is not None
AssertionError
Cleaning up file based variables
ERROR: Job failed: exit code 1