Build failed. https://zuul.opendev.org/t/openstack/buildset/536759e9d2994e38a9a3f10e5217683e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cb357d7a344445a3a381514189c28b2b : SUCCESS in 4m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9beb44ed5d374708a7003b553c7fd0e4 : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8fcccb2114034d7da2188ea6f305a78e : SUCCESS in 4m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/54b85ad1a9094b5c8d562d688f24549b : SUCCESS in 5m 09s