Seven workflows thus far have failed unit testing by timing out after 6 hours. This occurs during random testing of the lexers.
Specifically the unit test: test_basic_api.py::test_random_input. These appear to be attributed to the TableGenLexer. This lexer appears to have been added a year ago, with the latest code change happening ~ 9 months ago. These specific failures started popping up ~ 2 months ago, independent of OS and version.
I don't think this can be attributed to any specific recent change to this lexer. It is likely worth debugging this lexer, using snippets of this random input as bait, to see which regex expression is causing issue.