Build failed. https://zuul.opendev.org/t/openstack/buildset/21ee87ce361541a5a15bbdc6dd9a68c3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e2dd16edbc2a4ea2806dd5c63209c59b : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b3192ae6daa642f993a143438580896e : SUCCESS in 2m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5fc08993362e443eb7df034114240954 : SUCCESS in 2m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/baf3202f243147f2a758c6b78fc6e51f : FAILURE in 2m 47s