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 python3-Sphinx-3.5.1-2.noarch marks python3-sphinxcontrib-serializinghtml-1.1.4-2.noarch (cap python3.9dist(sphinxcontrib-serializinghtml))
There are 22 packages to install (21 marked by dependencies):
A python3-Sphinx-3.5.1-2.noarch  python3-alabaster-0.7.12-3.noarch  
A python3-babel-2.9.1-1.noarch  python3-certifi-2019.11.28-2.noarch  
A python3-charset_normalizer-2.0.7-3.noarch  
A python3-docutils-0.16-4.noarch  python3-idna-3.3-1.noarch  
A python3-imagesize-1.2.0-2.noarch  python3-jinja2-3.0.2-1.noarch  
A python3-markupsafe-2.0.1-2.x86_64  python3-pyOpenSSL-19.1.0-2.noarch  
A python3-pytz-2020.5-2.noarch  python3-requests-2.26.0-2.noarch  
A python3-snowballstemmer-2.0.0-2.noarch  
A python3-sphinxcontrib-applehelp-1.0.2-2.noarch  
A python3-sphinxcontrib-devhelp-1.0.2-2.noarch  
A python3-sphinxcontrib-htmlhelp-1.0.3-2.noarch  
A python3-sphinxcontrib-jsmath-1.0.1-2.noarch  
A python3-sphinxcontrib-qthelp-1.0.3-2.noarch  
A python3-sphinxcontrib-serializinghtml-1.1.4-2.noarch  
A python3-urllib3-1.25.11-3.noarch  sphinx-pdg-3.5.1-2.noarch
This operation will use 54.4MB of disk space.
sphinx-pdg-3.5.1-2.noarch.rpm: digests OK
python3-Sphinx-3.5.1-2.noarch.rpm: digests OK
python3-alabaster-0.7.12-3.noarch.rpm: digests OK
python3-babel-2.9.1-1.noarch.rpm: digests OK
python3-pytz-2020.5-2.noarch.rpm: digests OK
python3-docutils-0.16-4.noarch.rpm: digests OK
python3-imagesize-1.2.0-2.noarch.rpm: digests OK
python3-jinja2-3.0.2-1.noarch.rpm: digests OK
python3-markupsafe-2.0.1-2.x86_64.rpm: digests OK
python3-requests-2.26.0-2.noarch.rpm: digests OK
python3-charset_normalizer-2.0.7-3.noarch.rpm: digests OK
python3-idna-3.3-1.noarch.rpm: digests OK
python3-pyOpenSSL-19.1.0-2.noarch.rpm: digests OK
python3-urllib3-1.25.11-3.noarch.rpm: digests OK
python3-certifi-2019.11.28-2.noarch.rpm: digests OK
python3-snowballstemmer-2.0.0-2.noarch.rpm: digests OK
python3-sphinxcontrib-applehelp-1.0.2-2.noarch.rpm: digests OK
python3-sphinxcontrib-devhelp-1.0.2-2.noarch.rpm: digests OK
python3-sphinxcontrib-htmlhelp-1.0.3-2.noarch.rpm: digests OK
python3-sphinxcontrib-jsmath-1.0.1-2.noarch.rpm: digests OK
python3-sphinxcontrib-qthelp-1.0.3-2.noarch.rpm: digests OK
python3-sphinxcontrib-serializinghtml-1.1.4-2.noarch.rpm: digests OK
Need to get 9.8MB of archives. 
error: 3 unresolved dependencies
error: BR installation failed
+ chmod -R u+rwX /tmp/B.0_3j8am3/BUILD
+ rm -rf /tmp/B.0_3j8am3/tmp /tmp/B.0_3j8am3/BUILD
+ rm -rf /tmp/B.0_3j8am3
Begin-TLD-Builder-Info
Build-Time: user:2.06s sys:0.74s real:3.51s (faults io:43 non-io:122068)
End-TLD-Builder-Info