clean up I/O operation on closed file errors during test suite

[zzstoatzz]

Bug summary

often at test teardown we see

Message: 'Finished call %r'
Arguments: (get(<dropped>),)
--- Logging error ---
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/logging/__init__.py", line 1103, in emit
    stream.write(msg + self.terminator)
ValueError: I/O operation on closed file.

which doesn't break the tests, but is annoying and makes it harder to read the output

Version info

`main`

Additional context

No response