error: can't copy 'build\lib.win-amd64-3.7\pyd': doesn't exist or not a regular file

[datumbox]

🐛 Describe the bug

The CI jobs unittest_windows_gpu_py3.7 and unittest_windows_cpu_py3.7 fail with:

error: can't copy 'build\lib.win-amd64-3.7\pyd': doesn't exist or not a regular file

Versions

Main branch has been failing since 53c8532

cc @seemethere

[seemethere]

This one doesn't look related to upstream changes since the file it's trying to copy comes from torchvision itself and not upstream torch

[datumbox]

@seemethere Thanks a lot for checking.

The problem doesn't seem to be related to changes done on TorchVision. We suspect that this is related to either the CI infra or some change upstream. To verify that today I manually rerun the unittest_windows_cpu_py3.7 of commit 467b841; previously the run was successful. Simply rerunning it from the CircleCI UI leads to failures. Since I'm just running the same code that previously passed, I conclude that the issue is probably either upstream or on the CI infra side. You can try the same with any other previously successful commit to verify.

Could we have some help from your side to solve this?

[atalman]

Looks like the error happened in nightly between April 16 and 17.

And probably related to numpy

working using numpy 1.21.5
vs
failing using numpy 1.21.6

[malfet]

I suspect it's caused by pypa/setuptools#3219
Which is easily verifiable by pinning setuptools to say 58.0.4, which I'm doing in #5868

Following lines (found in all failing builds, but missing in all passing one suggest major setuptools update):

C:\Users\circleci\project\env\lib\site-packages\setuptools\command\easy_install.py:147: EasyInstallDeprecationWarning: easy_install command is deprecated. Use build and pip and other standards-based tools.
  EasyInstallDeprecationWarning,

[atalman]

Yes looks like you are correct setuptools is the problem