Build failed. https://zuul.opendev.org/t/openstack/buildset/82d69a5166ec4591b8d616f4a8298080 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4943c5e45edf4efcb4440394cdd3e4af : FAILURE in 3m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c7c90d2e61134cc3a80a1a59daa86dc0 : SUCCESS in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/75059349055f4c1a8514c53998b71962 : SUCCESS in 3m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2aa142ae6b6e4d7485b216150d005797 : SUCCESS in 4m 50s