The "release blocker" status comes from the test case I added in order to demonstrate the ability to strip a new frame sequence without needing to modify the C code.

Currently that test (failing to write the PYC file) fails with an IsADirectory traceback that includes a lot of importlib frames.

There are two possible solutions:
- redirect the affected call through "_call_with_frames_removed" but otherwise leave the failure intact
- change it so this particular case isn't a fatal error

I need to check if failing to write the .pyc was a fatal error in 3.2 before I decide how to fix it (unless someone else remembers off the top of their head)