[package] error if we try to mock a module in 3.6 (#61469)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/61469
This feature is not supported, error out early.
Differential Revision:
D29639797
D29639797
Test Plan: Imported from OSS
Reviewed By: Lilyjjo
Pulled By: suo
fbshipit-source-id: 775ed78638fb6da8f830b632726b00c0533ed176
