Build failed. https://zuul.opendev.org/t/openstack/buildset/165f8127f5494100a4b64ac02e60888c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/818c43784dad4f2c944d7ed9e3ac95e1 : SUCCESS in 5m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/09f016c2698241a68518c839587f0a0d : SUCCESS in 2m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/03ebe87be373413289201b63b5a47221 : FAILURE in 3m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ebc29b5bbb46442e887ba3ae163428f0 : FAILURE in 3m 04s