Build failed. https://zuul.opendev.org/t/openstack/buildset/892e5f710da44026b52a8ab23cb4c11e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/75026c6fe4bb4fd0a714dd67a3c7965c : FAILURE in 5m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/40765c97e509409b820ccafdcb4f72cb : FAILURE in 4m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/719dbc6c12df41eaaf98d803b5e9c1f7 : FAILURE in 4m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/071bd55126874c9ebc282b1877af7979 : FAILURE in 4m 57s