A test failed for my first CPython pull request  because of a missing entry in Misc/NEWS.d/next. So I learned the hard way about news files and blurb . Using the GitHub blurb app, I created a news file. Now two tests are failing.
python3 tools/rstlint.py ../Misc/NEWS.d/next/  ../Misc/NEWS.d/next/Documentation/2021-04-14-19-24-39.bpo-43848.gjIRIY.rst:1: default role used 1 problem with severity 2 found. Makefile:204: recipe for target 'check' failed
I am clueless. How to proceed?
 bpo-43848: explain optional argument mtime in gzip.py. by jwuttke · Pull Request #25410 · python/cpython · GitHub
 Sect. 3 (Lifecycle of a Pull Request) does not mention Misc/NEWS.d/next and blurb · Issue #674 · python/devguide · GitHub