Build failed. https://zuul.opendev.org/t/openstack/buildset/f3ee6d19fa50405d9523db315dd68eca - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/496c90efc6c641c29637e78774180d94 : SUCCESS in 3m 22s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/35c8fb94264345d2a7cc6f910820b38d : FAILURE in 3m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bada9196036743a2978dbccad13b692e : SUCCESS in 2m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/af7d6f02d505407fb29b211602f3a045 : FAILURE in 3m 56s