Build failed. https://zuul.opendev.org/t/openstack/buildset/fb871f03912c48aa88b0f7f81cf81cc4 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3af5273135c445819874cf5482fb1b42 : SUCCESS in 3m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/112eb3056bd84d93b7d62f264aa8eb79 : SUCCESS in 3m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c2e723cd4e7b46fdadae267e71d56807 : SUCCESS in 3m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1f2b538ef39445a08a01c72ee4094cd0 : FAILURE in 3m 45s