> and here [twisted/towncrier/actions/runs/3741354542](https://github.com/twisted/towncrier/actions/runs/3741354542)

If you look at https://github.com/twisted/towncrier/actions/runs/3741354542/jobs/6350891579#step:9:19 closer, you'll see warnings being emitted:

Checking dist/towncrier-22.12.0rc1-py3-none-any.whl: PASSED with warnings
WARNING  `long_description_content_type` missing. defaulting to `text/x-rst`.
Checking dist/towncrier-22.12.0rc1.tar.gz: PASSED with warnings
WARNING  `long_description_content_type` missing. defaulting to `text/x-rst`.

P.S. In general, it's a good idea to run twine check --strict at early stages. My pypi-publish action also has a strict mode, but it's not pleasant to see hard failures at the very last moment before the release.

Originally posted by @webknjaz in #456 (comment)