Build failed. https://zuul.opendev.org/t/openstack/buildset/3359c88ed6094102bf92f9ff1186f14c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f733734e87a54cac98f7f6a2502ec84d : FAILURE in 4m 15s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/656dea853b964d4f8f3bac68ea2dd7e6 : SUCCESS in 3m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b5bdb147c19848728dab6323320cb834 : SUCCESS in 3m 01s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fc3a9f6547904eefbafcabe7669fc4a0 : SUCCESS in 3m 28s