Build failed. https://zuul.opendev.org/t/openstack/buildset/ece23094d8734dbb8d91dec62d8a3e70 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/21d653644bf742e1b84dc11f4a845134 : SUCCESS in 4m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9405521150904818aef37b133ae8e523 : FAILURE in 3m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cea4775ac38849a3bd59486856278998 : SUCCESS in 3m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f06acb918e7a49fe9f15a2f75593b058 : SUCCESS in 4m 28s