Build failed. https://zuul.opendev.org/t/openstack/buildset/33be1ae0fdba4530a8bc14a955d8580e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cc41882093a246d2b2133ad6de1d7b99 : SUCCESS in 5m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/159af93650544a9bb34212c48f2f965d : FAILURE in 2m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ab4c7ca29a9649319b02822f6b5ae491 : SUCCESS in 4m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/912c00ad7e0542d7a47caead00f4e428 : SUCCESS in 3m 29s