The docs build is failing on main.

[jaraco]

 setuptools main 🐚 tox -e docs
.pkg: _optional_hooks> python '/Users/jaraco/Library/Application Support/pipx/venvs/tox/lib/python3.12/site-packages/pyproject_api/_backend.py' True setuptools.build_meta
.pkg: get_requires_for_build_editable> python '/Users/jaraco/Library/Application Support/pipx/venvs/tox/lib/python3.12/site-packages/pyproject_api/_backend.py' True setuptools.build_meta
.pkg: build_editable> python '/Users/jaraco/Library/Application Support/pipx/venvs/tox/lib/python3.12/site-packages/pyproject_api/_backend.py' True setuptools.build_meta
docs: install_package> python -I -m pip install --force-reinstall --no-deps /Users/jaraco/code/pypa/setuptools/.tox/.tmp/package/17/setuptools-72.1.0.post20240731-0.editable-py3-none-any.whl
docs: commands[0] /Users/jaraco/code/pypa/setuptools/docs> python -m sphinx -W --keep-going . /Users/jaraco/code/pypa/setuptools/build/html
Running Sphinx v7.4.7
loading translations [en]... done
loading intersphinx inventory 'python' from https://docs.python.org/3.11/objects.inv...
loading intersphinx inventory 'pip' from https://pip.pypa.io/en/latest/objects.inv...
loading intersphinx inventory 'build' from https://build.pypa.io/en/latest/objects.inv...
loading intersphinx inventory 'PyPUG' from https://packaging.python.org/en/latest/objects.inv...
loading intersphinx inventory 'packaging' from https://packaging.pypa.io/en/latest/objects.inv...
loading intersphinx inventory 'twine' from https://twine.readthedocs.io/en/stable/objects.inv...
loading intersphinx inventory 'importlib-resources' from https://importlib-resources.readthedocs.io/en/latest/objects.inv...
inventory <https://build.pypa.io/en/latest> contains multiple definitions for std:label:python--m-build--v
building [mo]: targets for 0 po files that are out of date
writing output... 
building [html]: targets for 48 source files that are out of date

Extension error (sphinxcontrib.towncrier.ext):
Handler <bound method TowncrierDraftEntriesEnvironmentCollector.get_outdated_docs of <sphinxcontrib.towncrier.ext.TowncrierDraftEntriesEnvironmentCollector object at 0x107c4c1a0>> for event 'env-get-outdated' threw an exception (exception: find_fragments() takes 3 positional arguments but 4 were given)
updating environment: docs: exit 2 (8.47 seconds) /Users/jaraco/code/pypa/setuptools/docs> python -m sphinx -W --keep-going . /Users/jaraco/code/pypa/setuptools/build/html pid=64363
  docs: FAIL code 2 (9.66=setup[1.19]+cmd[8.47] seconds)
  evaluation failed :( (9.70 seconds)

Originally posted by @jaraco in #4531 (comment)