Pablo,

There is another failure on that buildbot: test_inspect fails with
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/mark/repos/cpython/Lib/inspect.py", line 1154, in walktree
    classes.sort(key=attrgetter('__module__', '__name__'))
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: '<' not supported between instances of 'str' and 'module'


I can reproduce that failure with a debug build and either of
./python -m test -R 3:3  test_inspect
./python -m test test_inspect -F

Known issue or should I file a new issue? This issue is also present in 3.10.