Describe the bug

Web-based created PR is failing the black linting job with the cryptic error: "Bash exited with code '1'"

If there is no way around it, this looks like a bug in CI framework - breaking the ability of purely web-based PR submission and maintenance, which was available prior to requiring this black formatting check. Black appears to be the only check that requires a local copy of the PR, or at least of the files affected, and a local installation of software, black.

Steps/Code to Reproduce

Edit any *.py file in the mail repo in a web browser, follow the suggested steps to create a branch, and submit a PR.
The PR will fail the black linting job. There is no way around it in purely web-based workflow.

Expected Results

The purely web-based workflow should function without requiring any local copies or *.py and local software installations.

Actual Results

PR is failing the black linting job with the cryptic error: "Bash exited with code '1'"

Versions

The most current today.