Build failed. https://zuul.opendev.org/t/openstack/buildset/2bed3a6a63274505a1a10a2ee167da3d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fd05fcd8c0944dca9d1e809b3d203e50 : SUCCESS in 2m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1795807a46fd4e2cb7beef4a8735766c : SUCCESS in 4m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3e80e4d9bbc14e809c06d10848108388 : FAILURE in 3m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5fa81dc9db5d4166a0683665209f0f00 : FAILURE in 3m 45s