Avoid CI runs under users' own CircleCI personal account (#20981)
* Avoid null CI
* Avoid null CI
* rename
* more clear error message
* Update .circleci/config.yml
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* clean up
Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>