Build failed. https://zuul.opendev.org/t/openstack/buildset/aa2938d55df14f73a21fe6d2b877b510 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d628d3619291493ea4eef94e0adae8bd : FAILURE in 3m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9db707cb9ab64710a46adbb35abc2a60 : SUCCESS in 3m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8fd1f8a98cc243e9aa0514a11a15bec1 : SUCCESS in 2m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b5fc016cb3674a7695e535c8a6a2db06 : SUCCESS in 3m 18s