The 'tox -e checkniceness' command returns a variety of errors regarding possibly extraneous files.
$ tox -e checkniceness
checkniceness runtests: PYTHONHASHSEED='1414915594'
checkniceness runtests: commands[0] | openstack-doc-test --check-niceness
OpenStack Doc Checks (using openstack-doc-tools version 0.18.1)
Testing repository 'openstack-manuals'
Testing patch:
Title: Improve install guide neutron ML2 sections
Author: Matthew Kassawara
Branch: bp/instguideimprovements/neutron1
Checking XML files for niceness...
Check passed, validated 3 XML files.
Run time was: 0.25 seconds.
Congratulations, all tests passed!
checkniceness runtests: commands[1] | doc8 -e .rst -e .txt doc
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:1: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:2: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:3: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:4: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:5: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:6: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:7: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:8: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:9: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:10: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:11: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:12: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:13: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:14: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:15: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:16: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:17: D002 Trailing whitespace
doc/install-guide/target/docbkx/fonts/CartoGothic-Std/FontSite License.txt:18: D002 Trailing whitespace
(output truncated)
note this only happens in a local environment, not in the gate.