Build failed. https://zuul.opendev.org/t/openstack/buildset/c459e5a128c44328afb94d28aa46caeb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/926996b3c9724704a870facd6f2a4a52 : FAILURE in 5m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/44786488f6884837bb7b9863fd587c2d : SUCCESS in 4m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b21b1f25ea464612b0bb5622149a9412 : SUCCESS in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6ed1072b4b394eeb989ecbe227e1acbc : SUCCESS in 4m 32s