1.2.0: sphinx warnings 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 docs build/sphinx/man
Running Sphinx v7.1.2
making output directory... done
[autosummary] generating autosummary for: 404.rst, examples.md, index.md, project_info.md, project_info/code_of_conduct.md, project_info/codeshelter.md, project_info/contributing.md, project_info/contributors.md, project_info/history.md, project_info/related_projects.md, ..., user_guide/files.md, user_guide/filtering.md, user_guide/general.md, user_guide/headers.md, user_guide/inspection.md, user_guide/installation.md, user_guide/matching.md, user_guide/security.md, user_guide/serializers.md, user_guide/troubleshooting.md
loading intersphinx inventory from https://www.attrs.org/en/stable/objects.inv...
loading intersphinx inventory from https://boto3.amazonaws.com/v1/documentation/api/latest/objects.inv...
loading intersphinx inventory from https://botocore.readthedocs.io/en/latest/objects.inv...
loading intersphinx inventory from https://cattrs.readthedocs.io/en/latest/objects.inv...
loading intersphinx inventory from https://cryptography.io/en/latest/objects.inv...
loading intersphinx inventory from https://itsdangerous.palletsprojects.com/en/2.0.x/objects.inv...
loading intersphinx inventory from https://pymongo.readthedocs.io/en/stable/objects.inv...
loading intersphinx inventory from https://docs.python.org/3/objects.inv...
loading intersphinx inventory from https://redis-py.readthedocs.io/en/stable/objects.inv...
loading intersphinx inventory from https://requests.readthedocs.io/en/latest/objects.inv...
loading intersphinx inventory from https://urllib3.readthedocs.io/en/latest/objects.inv...
intersphinx inventory has moved: https://cattrs.readthedocs.io/en/latest/objects.inv -> https://catt.rs/en/latest/objects.inv
intersphinx inventory has moved: https://botocore.readthedocs.io/en/latest/objects.inv -> https://botocore.amazonaws.com/v1/documentation/api/latest/objects.inv
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.cache_keys.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.patcher.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.base.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.dynamodb.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.filesystem.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.gridfs.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.mongodb.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.redis.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.backends.sqlite.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.models.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.models.base.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.models.raw_response.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.models.request.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.models.response.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.policy.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.policy.actions.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.policy.directives.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.policy.expiration.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.policy.settings.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.serializers.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.serializers.cattrs.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.serializers.pipeline.rst.
Creating file /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/modules/requests_cache.serializers.preconf.rst.
myst v2.0.0: MdParserConfig(commonmark_only=False, gfm_only=False, enable_extensions={'smartquotes', 'colon_fence', 'replacements', 'html_image', 'linkify'}, disable_syntax=[], all_links_external=False, url_schemes=('http', 'https', 'mailto', 'ftp'), ref_domains=None, fence_as_directive=set(), number_code_blocks=[], title_to_header=False, heading_anchors=0, heading_slug_func=None, html_meta={}, footnote_transition=True, words_per_minute=200, substitutions={}, linkify_fuzzy_links=True, dmath_allow_labels=True, dmath_allow_space=True, dmath_allow_digits=True, dmath_double_inline=False, update_mathjax=True, mathjax_classes='tex2jax_process|mathjax_process|math|output_area', enable_checkboxes=False, suppress_warnings=[], highlight_code_blocks=True)
building [mo]: targets for 0 po files that are out of date
writing output...
building [man]: all manpages
updating environment: [new config] 57 added, 0 changed, 0 removed
reading sources... [100%] user_guide/troubleshooting
WARNING: autodoc: failed to import module 'dynamodb' from module 'requests_cache.backends'; the following exception was raised:
No module named 'boto3'
WARNING: autodoc: failed to import module 'gridfs' from module 'requests_cache.backends'; the following exception was raised:
No module named 'gridfs'
WARNING: autodoc: failed to import module 'mongodb' from module 'requests_cache.backends'; the following exception was raised:
No module named 'pymongo'
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/patcher.py:docstring of requests_cache.patcher:8:<autosummary>:1: WARNING: Inline interpreted text or phrase reference start-string without end-string.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/patcher.py:docstring of requests_cache.patcher.delete:1: WARNING: Inline interpreted text or phrase reference start-string without end-string.
WARNING: Cannot resolve forward reference in type annotations of "requests_cache.policy.actions.CacheActions.is_usable": name 'CachedResponse' is not defined
WARNING: Cannot resolve forward reference in type annotations of "requests_cache.policy.actions.CacheActions.update_from_cached_response": name 'CachedResponse' is not defined
WARNING: Cannot resolve forward reference in type annotations of "requests_cache.policy.actions.CacheActions.update_revalidated_response": name 'CachedResponse' is not defined
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
writing... python-requests-cache.3 { user_guide user_guide/installation user_guide/general user_guide/backends user_guide/backends/dynamodb user_guide/backends/filesystem user_guide/backends/gridfs user_guide/backends/mongodb user_guide/backends/redis user_guide/backends/sqlite user_guide/files user_guide/troubleshooting user_guide/filtering user_guide/headers user_guide/inspection user_guide/expiration user_guide/matching user_guide/security user_guide/serializers user_guide/advanced_requests user_guide/compatibility examples reference modules/requests_cache.session modules/requests_cache.patcher modules/requests_cache.backends modules/requests_cache.backends.base modules/requests_cache.backends.dynamodb modules/requests_cache.backends.filesystem modules/requests_cache.backends.gridfs modules/requests_cache.backends.mongodb modules/requests_cache.backends.redis modules/requests_cache.backends.sqlite modules/requests_cache.models modules/requests_cache.models.base modules/requests_cache.models.raw_response modules/requests_cache.models.request modules/requests_cache.models.response modules/requests_cache.cache_keys modules/requests_cache.policy modules/requests_cache.policy.actions modules/requests_cache.policy.directives modules/requests_cache.policy.expiration modules/requests_cache.policy.settings modules/requests_cache.serializers modules/requests_cache.serializers.cattrs modules/requests_cache.serializers.pipeline modules/requests_cache.serializers.preconf project_info project_info/contributing project_info/codeshelter project_info/contributors project_info/code_of_conduct project_info/related_projects project_info/history } /home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/HISTORY.md:8: WARNING: 'myst' cross-reference target not found: 'deprecations-1-0' [myst.xref_missing]
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/backends.md:14: WARNING: py:class reference target not found: MongoCache
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/backends.md:15: WARNING: py:class reference target not found: GridFSCache
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/backends.md:16: WARNING: py:class reference target not found: DynamoDbCache
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/backends/dynamodb.md:21: WARNING: py:class reference target not found: DynamoDbCache
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/backends/gridfs.md:10: WARNING: py:mod reference target not found: requests_cache.backends.mongodb
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/backends/gridfs.md:14: WARNING: py:class reference target not found: GridFSCache
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/backends/mongodb.md:17: WARNING: py:class reference target not found: MongoCache
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/troubleshooting.md:69: WARNING: py:meth reference target not found: BaseCache.remove
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/expiration.md:225: WARNING: py:mod reference target not found: requests_cache.backends.dynamodb
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/expiration.md:226: WARNING: py:mod reference target not found: requests_cache.backends.mongodb
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docs/user_guide/security.md:42: WARNING: py:func reference target not found: safe_pickle_serializer
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/examples/custom_request_matcher.py:12: WARNING: py:func reference target not found: requests.help.info
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docstring of requests_cache.session.CachedSession.auth:1: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.delete:1: WARNING: py:class reference target not found: Response
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.delete:4: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.get:1: WARNING: py:class reference target not found: Response
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.get:4: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.head:1: WARNING: py:class reference target not found: Response
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.head:4: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docstring of requests_cache.session.CachedSession.headers:1: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docstring of requests_cache.session.CachedSession.headers:1: WARNING: py:class reference target not found: Session
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docstring of requests_cache.session.CachedSession.max_redirects:1: WARNING: py:class reference target not found: TooManyRedirects
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.options:1: WARNING: py:class reference target not found: Response
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.options:4: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docstring of requests_cache.session.CachedSession.params:1: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.patch:1: WARNING: py:class reference target not found: Response
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.patch:4: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.patch:6: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.post:1: WARNING: py:class reference target not found: Response
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.post:4: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.post:6: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.post:8: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests.sessions.Session.prepare_request:1: WARNING: py:class reference target not found: PreparedRequest
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests.sessions.Session.prepare_request:1: WARNING: py:class reference target not found: PreparedRequest
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests.sessions.Session.prepare_request:1: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests.sessions.Session.prepare_request:1: WARNING: py:class reference target not found: Session
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests.sessions.Session.prepare_request:7: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/docstring of requests_cache.session.CachedSession.proxies:1: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.put:1: WARNING: py:class reference target not found: Response
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.put:4: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/session.py:docstring of requests_cache.session.CacheMixin.put:6: WARNING: py:class reference target not found: Request
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of requests_cache.backends.base.BaseStorage:1: WARNING: py:obj reference target not found: requests_cache.backends.base.KT
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of requests_cache.backends.base.BaseStorage:1: WARNING: py:obj reference target not found: requests_cache.backends.base.VT
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.clear:1: WARNING: py:class reference target not found: None.  Remove all items from D.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.get:1: WARNING: py:class reference target not found: D[k] if k in D, else d.  d defaults to None.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.items:1: WARNING: py:class reference target not found: a set-like object providing a view on D's items
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.keys:1: WARNING: py:class reference target not found: a set-like object providing a view on D's keys
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.pop:1: WARNING: py:class reference target not found: v, remove specified key and return the corresponding value.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.popitem:1: WARNING: py:class reference target not found: (k, v), remove and return some (key, value) pair
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.setdefault:1: WARNING: py:class reference target not found: D.get(k,d), also set D[k]=d if k not in D
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.update:1: WARNING: py:class reference target not found: None.  Update D from mapping/iterable E and F.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.values:1: WARNING: py:class reference target not found: an object providing a view on D's values
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.clear:1: WARNING: py:class reference target not found: None.  Remove all items from D.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.get:1: WARNING: py:class reference target not found: D[k] if k in D, else d.  d defaults to None.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.items:1: WARNING: py:class reference target not found: a set-like object providing a view on D's items
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.keys:1: WARNING: py:class reference target not found: a set-like object providing a view on D's keys
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.pop:1: WARNING: py:class reference target not found: v, remove specified key and return the corresponding value.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.popitem:1: WARNING: py:class reference target not found: (k, v), remove and return some (key, value) pair
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.setdefault:1: WARNING: py:class reference target not found: D.get(k,d), also set D[k]=d if k not in D
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.MutableMapping.update:1: WARNING: py:class reference target not found: None.  Update D from mapping/iterable E and F.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/base.py:docstring of collections.abc.Mapping.values:1: WARNING: py:class reference target not found: an object providing a view on D's values
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of requests_cache.backends.filesystem.FileDict.clear:1: WARNING: py:class reference target not found: None.  Remove all items from D.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of collections.abc.Mapping.get:1: WARNING: py:class reference target not found: D[k] if k in D, else d.  d defaults to None.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of collections.abc.Mapping.items:1: WARNING: py:class reference target not found: a set-like object providing a view on D's items
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of requests_cache.backends.filesystem.FileDict.keys:1: WARNING: py:class reference target not found: a set-like object providing a view on D's keys
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of collections.abc.MutableMapping.pop:1: WARNING: py:class reference target not found: v, remove specified key and return the corresponding value.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of collections.abc.MutableMapping.popitem:1: WARNING: py:class reference target not found: (k, v), remove and return some (key, value) pair
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of collections.abc.MutableMapping.setdefault:1: WARNING: py:class reference target not found: D.get(k,d), also set D[k]=d if k not in D
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of collections.abc.MutableMapping.update:1: WARNING: py:class reference target not found: None.  Update D from mapping/iterable E and F.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/filesystem.py:docstring of collections.abc.Mapping.values:1: WARNING: py:class reference target not found: an object providing a view on D's values
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/redis.py:docstring of requests_cache.backends.redis.RedisDict.clear:1: WARNING: py:class reference target not found: None.  Remove all items from D.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/redis.py:docstring of collections.abc.Mapping.get:1: WARNING: py:class reference target not found: D[k] if k in D, else d.  d defaults to None.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/redis.py:docstring of requests_cache.backends.redis.RedisDict.items:1: WARNING: py:class reference target not found: a set-like object providing a view on D's items
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/redis.py:docstring of requests_cache.backends.redis.RedisDict.keys:1: WARNING: py:class reference target not found: a set-like object providing a view on D's keys
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/redis.py:docstring of collections.abc.MutableMapping.pop:1: WARNING: py:class reference target not found: v, remove specified key and return the corresponding value.
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/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/sqlite.py:docstring of requests_cache.backends.sqlite.SQLiteCache.delete:10: WARNING: py:meth reference target not found: BaseCache.delete
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/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/sqlite.py:docstring of collections.abc.Mapping.items:1: WARNING: py:class reference target not found: a set-like object providing a view on D's items
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/sqlite.py:docstring of collections.abc.Mapping.keys:1: WARNING: py:class reference target not found: a set-like object providing a view on D's keys
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/sqlite.py:docstring of collections.abc.MutableMapping.pop:1: WARNING: py:class reference target not found: v, remove specified key and return the corresponding value.
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/sqlite.py:docstring of collections.abc.MutableMapping.popitem:1: WARNING: py:class reference target not found: (k, v), remove and return some (key, value) pair
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/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/backends/sqlite.py:docstring of collections.abc.MutableMapping.update:1: WARNING: py:class reference target not found: None.  Update D from mapping/iterable E and F.
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/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/models/raw_response.py:docstring of urllib3.response.HTTPResponse.read_chunked:1: WARNING: py:meth reference target not found: HTTPResponse.read
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/models/request.py:docstring of requests_cache.models.request.CachedRequest:1: WARNING: py:class reference target not found: requests.PreparedResponse
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/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/models/response.py:docstring of requests_cache.models.response.BaseResponse.is_redirect:1: WARNING: py:meth reference target not found: Session.resolve_redirects
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/models/response.py:docstring of requests.models.Response.raise_for_status:1: WARNING: py:class reference target not found: HTTPError
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/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/policy/actions.py:docstring of requests_cache.policy.actions.CacheActions:2: WARNING: py:meth reference target not found: CachedSession.send
/home/tkloczko/rpmbuild/BUILD/requests-cache-1.2.0/requests_cache/serializers/preconf.py:docstring of requests_cache.serializers.preconf:4:<autosummary>:1: WARNING: py:obj reference target not found: requests_cache.serializers.preconf.convert_float_stage
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done
build succeeded, 147 warnings.

You can peak on fixes that kind of issues in other projects
RDFLib/rdflib-sqlalchemy#95
RDFLib/rdflib#2036
click-contrib/sphinx-click@abc31069
frostming/unearth#14
jaraco/cssutils#21
latchset/jwcrypto#289
latchset/jwcrypto#289
pypa/distlib@98b9b89f
pywbem/pywbem#2895
sissaschool/elementpath@bf869d9e
sissaschool/xmlschema@42ea98f2
sqlalchemy/sqlalchemy@5e88e6e8

[JWCook]

Thanks for the heads up. Most of those are about things that don't need to be linked (abstract base class methods, inherited requests methods, etc.), a couple are due to missing optional dependencies, and some are invalid crossrefs that l'll fix shortly.