Build failed. https://zuul.opendev.org/t/openstack/buildset/9ca3c5bdc52a4deba90c051825ed4aa4 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1ad4fd4dba2c402d91aff84d69221546 : SUCCESS in 3m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f84be692dcbf49208f07ada95a4f4712 : FAILURE in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1a2932d988ed435ea9e4d186c09d33ab : SUCCESS in 4m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/45ccc82630324838abadb3e11090cfdb : SUCCESS in 3m 32s