Build failed. https://zuul.opendev.org/t/openstack/buildset/0fff28cfd33944568dffd8b8d6bb451f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1cdec116ff914feeae6c8d244e7d2866 : FAILURE in 4m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d8c097bfa32c4c8d9499e0578c4c75d4 : FAILURE in 3m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9db98d9134504969860458162c018bd0 : FAILURE in 5m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/30e720ef528f474a90605c599846d673 : FAILURE in 4m 30s