3.0.18: warning on generate prompt-toolkit man page

+ sphinx-build -b man -d prompt-toolkit docs .
Running Sphinx v3.5.3
WARNING: html_static_path entry '_static' does not exist
building [mo]: targets for 0 po files that are out of date
building [man]: all manpages
updating environment: [new config] 23 added, 0 changed, 0 removed
reading sources... [100%] pages/upgrading/index
/home/tkloczko/rpmbuild/BUILD/prompt_toolkit-3.0.18/docs/pages/advanced_topics/index.rst:6: WARNING: toctree contains reference to nonexisting document 'pages/advanced_topics/unit_testing'
/home/tkloczko/rpmbuild/BUILD/prompt_toolkit-3.0.18/prompt_toolkit/application/__init__.py:docstring of prompt_toolkit.application.current.create_app_session:3: WARNING: Inline interpreted text or phrase reference start-string without end-string.
WARNING: autodoc: failed to import module 'pyperclip' from module 'prompt_toolkit.clipboard'; the following exception was raised:
No module named 'pyperclip'
/home/tkloczko/rpmbuild/BUILD/prompt_toolkit-3.0.18/prompt_toolkit/filters/base.py:docstring of prompt_toolkit.filters.base.Filter:1: WARNING: duplicate object description of prompt_toolkit.filters.Filter, other instance in pages/reference, use :noindex: for one of them
/home/tkloczko/rpmbuild/BUILD/prompt_toolkit-3.0.18/prompt_toolkit/filters/base.py:docstring of prompt_toolkit.filters.base.Condition:1: WARNING: duplicate object description of prompt_toolkit.filters.Condition, other instance in pages/reference, use :noindex: for one of them
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute EventLoop
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute From
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute Return
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute ensure_future
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute create_event_loop
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute create_asyncio_event_loop
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute get_event_loop
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute set_event_loop
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute run_in_executor
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute call_from_executor
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute run_until_complete
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute Future
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.eventloop, attribute InvalidStateError
WARNING: autodoc: failed to import module 'posix' from module 'prompt_toolkit.eventloop'; the following exception was raised:
No module named 'prompt_toolkit.eventloop.posix'
WARNING: autodoc: failed to import module 'win32' from module 'prompt_toolkit.eventloop'; the following exception was raised:
cannot import name 'windll' from 'ctypes' (/usr/lib64/python3.8/ctypes/__init__.py)
WARNING: autodoc: failed to import module 'asyncio_win32' from module 'prompt_toolkit.eventloop'; the following exception was raised:
No module named 'prompt_toolkit.eventloop.asyncio_win32'
WARNING: autodoc: failed to import module 'asyncio_posix' from module 'prompt_toolkit.eventloop'; the following exception was raised:
No module named 'prompt_toolkit.eventloop.asyncio_posix'
WARNING: autodoc: failed to import module 'win32' from module 'prompt_toolkit.input'; the following exception was raised:
No module named 'msvcrt'
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.output, attribute get_default_output
WARNING: missing attribute mentioned in :members: option: module prompt_toolkit.output, attribute set_default_output
WARNING: autodoc: failed to import module 'win32' from module 'prompt_toolkit.output'; the following exception was raised:
cannot import name 'windll' from 'ctypes' (/usr/lib64/python3.8/ctypes/__init__.py)
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
writing... python-prompt_toolkit.3 { pages/gallery pages/getting_started pages/upgrading/index pages/upgrading/2.0 pages/upgrading/3.0 pages/printing_text pages/asking_for_input pages/dialogs pages/progress_bars pages/full_screen_apps pages/tutorials/index pages/tutorials/repl pages/advanced_topics/index pages/advanced_topics/key_bindings pages/advanced_topics/styling pages/advanced_topics/filters pages/advanced_topics/rendering_flow pages/advanced_topics/asyncio pages/advanced_topics/input_hooks pages/advanced_topics/architecture pages/advanced_topics/rendering_pipeline pages/reference } /home/tkloczko/rpmbuild/BUILD/prompt_toolkit-3.0.18/docs/pages/advanced_topics/key_bindings.rst:: WARNING: "table row spanning" not supported
/home/tkloczko/rpmbuild/BUILD/prompt_toolkit-3.0.18/docs/pages/advanced_topics/key_bindings.rst:: WARNING: "table row spanning" not supported
done
build succeeded, 29 warnings.

Start by rerunning sphinx-build -b man -d prompt-toolkit docs . and review the warnings listed in the build output. Inspect docs/pages/advanced_topics/index.rst, docs/pages/advanced_topics/key_bindings.rst, and the referenced prompt_toolkit modules to determine which warnings are actionable. Done means the man-page build no longer reports the identified documentation and autodoc warnings.