new release of sphinx-lint came out with differing checks.

Or with bugs. From a code diff of python/cpython#97962:

sphinx-lint 0.6.2 yields many default role errors due to the new regular expression used for default role detection, so we don't use the version until the errors are fixed.

Or with bugs. From a code diff of python/cpython#97962:

... the errors are fixed.

I meant the errors in CPython's reStructuredText sources in that comment, I'm assuming the changes in sphinx-lint are correct. I haven't checked either, though.

A

I didn't check in detail but the amount of errors in CI does suggest a bug in sphinx-lint.

Yes, reported here: sphinx-contrib/sphinx-lint#46