[caffe2][tpx] log to stderr (#42162)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/42162
Test Plan: CI
Reviewed By: mrshenli
Differential Revision: D22791440
fbshipit-source-id: 14f16cd7a94a57161c5724177b518527f486232d
Author
Sandeep Kumar Pani
