Build failed. https://zuul.opendev.org/t/openstack/buildset/1d7d2aca2c86450d91346e4f198e69cd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3b9ddc4f4d7849e6acbad02980628b61 : FAILURE in 4m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/99e46db9a64442f38b0cd95a0dd0aced : SUCCESS in 4m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4fc9e35cb0cf4a969f37a2b9f371d4f4 : SUCCESS in 4m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a611004d3be94e2ba62e5dcbd6596f42 : SUCCESS in 6m 40s