1.1: sphinx warnings about reference target not found

[kloczek]

On building my packages I'm using sphinx-build command with -n switch which shows warmings about missing references. These are not critical issues.
Here is the output with warnings:

+ /usr/bin/sphinx-build -n -T -b man doc build/sphinx/man
Running Sphinx v4.5.0
making output directory... done
building [mo]: targets for 0 po files that are out of date
building [man]: all manpages
updating environment: [new config] 10 added, 0 changed, 0 removed
reading sources... [100%] movingparts
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
writing... python-html5lib.3 { movingparts modules html5lib html5lib.filters html5lib.treebuilders html5lib.treewalkers html5lib.treeadapters changes license } /home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/movingparts.rst:7: WARNING: py:class reference target not found: html5lib.serializer.HTMLSerializer
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/movingparts.rst:18: WARNING: py:mod reference target not found: xml.etree
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/movingparts.rst:23: WARNING: py:mod reference target not found: xml.dom.minidom
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/movingparts.rst:25: WARNING: py:mod reference target not found: lxml.etree
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/movingparts.rst:61: WARNING: py:class reference target not found: html5lib.serializer.HTMLSerializer
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/movingparts.rst:86: WARNING: py:class reference target not found: html5lib.serializer.HTMLSerializer
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/movingparts.rst:160: WARNING: py:mod reference target not found: chardet
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.rst:7: WARNING: py:mod reference target not found: constants
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.rst:14: WARNING: py:mod reference target not found: html5parser
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.rst:22: WARNING: py:mod reference target not found: serializer
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/html5lib/serializer.py:docstring of html5lib.serializer.serialize:9: WARNING: py:class reference target not found: html5lib.serializer.HTMLSerializer
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.filters.rst:4: WARNING: py:mod reference target not found: base
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.filters.rst:12: WARNING: py:mod reference target not found: alphabeticalattributes
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/html5lib/filters/alphabeticalattributes.py:docstring of html5lib.filters.alphabeticalattributes.Filter:1: WARNING: py:class reference target not found: html5lib.filters.base.Filter
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.filters.rst:20: WARNING: py:mod reference target not found: inject_meta_charset
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/html5lib/filters/inject_meta_charset.py:docstring of html5lib.filters.inject_meta_charset.Filter:1: WARNING: py:class reference target not found: html5lib.filters.base.Filter
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.filters.rst:28: WARNING: py:mod reference target not found: lint
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/html5lib/filters/lint.py:docstring of html5lib.filters.lint.Filter:1: WARNING: py:class reference target not found: html5lib.filters.base.Filter
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.filters.rst:36: WARNING: py:mod reference target not found: optionaltags
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/html5lib/filters/optionaltags.py:docstring of html5lib.filters.optionaltags.Filter:1: WARNING: py:class reference target not found: html5lib.filters.base.Filter
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.filters.rst:44: WARNING: py:mod reference target not found: sanitizer
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/html5lib/filters/sanitizer.py:docstring of html5lib.filters.sanitizer.Filter:1: WARNING: py:class reference target not found: html5lib.filters.base.Filter
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.filters.rst:52: WARNING: py:mod reference target not found: whitespace
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/html5lib/filters/whitespace.py:docstring of html5lib.filters.whitespace.Filter:1: WARNING: py:class reference target not found: html5lib.filters.base.Filter
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treebuilders.rst:4: WARNING: py:mod reference target not found: treebuilders
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treebuilders.rst:12: WARNING: py:mod reference target not found: base
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treebuilders.rst:20: WARNING: py:mod reference target not found: dom
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treebuilders.rst:28: WARNING: py:mod reference target not found: etree
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treebuilders.rst:36: WARNING: py:mod reference target not found: etree_lxml
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treewalkers.rst:4: WARNING: py:mod reference target not found: treewalkers
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treewalkers.rst:12: WARNING: py:mod reference target not found: base
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treewalkers.rst:20: WARNING: py:mod reference target not found: dom
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treewalkers.rst:28: WARNING: py:mod reference target not found: etree
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treewalkers.rst:36: WARNING: py:mod reference target not found: etree_lxml
/home/tkloczko/rpmbuild/BUILD/html5lib-python-1.1/doc/html5lib.treewalkers.rst:44: WARNING: py:mod reference target not found: genshi
done
build succeeded, 35 warnings.