Issue with rewrite test on Python 3.11-beta2

[rossbar]

We recently started experiencing failures in CI jobs testing against the Python 3.11 betas. This appears to have started with the Python 3.11-beta2 released 05/31/22.

Reproducing example ported over from CI

$ pytest --durations=10 --pyargs networkx
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/bin/pytest", line 8, in <module>
    sys.exit(console_main())
             ^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/config/__init__.py", line 187, in console_main
    code = main()
           ^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/config/__init__.py", line 145, in main
    config = _prepareconfig(args, plugins)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/config/__init__.py", line 324, in _prepareconfig
    config = pluginmanager.hook.pytest_cmdline_parse(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/pluggy/_callers.py", line 55, in _multicall
    gen.send(outcome)
    ^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/helpconfig.py", line 102, in pytest_cmdline_parse
    config: Config = outcome.get_result()
                     ^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/pluggy/_result.py", line 60, in get_result
    raise ex[1].with_traceback(ex[2])
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
          ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/config/__init__.py", line 1016, in pytest_cmdline_parse
    self.parse(args)
    ^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/config/__init__.py", line 1304, in parse
    self._preparse(args, addopts=addopts)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/config/__init__.py", line 1187, in _preparse
    self.pluginmanager.load_setuptools_entrypoints("pytest11")
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/pluggy/_manager.py", line 287, in load_setuptools_entrypoints
    plugin = ep.load()
             ^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/importlib/metadata/__init__.py", line 198, in load
    module = import_module(match.group('module'))
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1206, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1178, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1149, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/assertion/rewrite.py", line 159, in exec_module
    source_stat, co = _rewrite_test(fn, self.config)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.0-beta.2/x64/lib/python3.11/site-packages/_pytest/assertion/rewrite.py", line 361, in _rewrite_test
    co = compile(tree, strfn, "exec", dont_inherit=True)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ValueError: line 2-0 is not a valid range

Output of pip list:

Package            Version
------------------ -------------
attrs              21.4.0
certifi            2022.5.18.1
charset-normalizer 2.0.12
codecov            2.1.12
coverage           6.4
idna               3.3
iniconfig          1.1.1
networkx           2.8.3rc1.dev0
packaging          21.3
pip                22.1.2
pluggy             1.0.0
py                 1.11.0
pyparsing          3.0.9
pytest             7.1.2
pytest-cov         3.0.0
requests           2.27.1
setuptools         62.3.2
tomli              2.0.1
urllib3            1.26.9
wheel              0.37.1

Pytest & OS versions:

pytest==7.1.2, OS=ubuntu-22.04 (from github actions)

[rossbar]

Oops - a closer look at the release notes for beta2 indicates this is a known issue (see #10008). Closing.