Build failed. https://zuul.opendev.org/t/openstack/buildset/9c5920f460b644768d6305440545b27b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8552726b49ca41a5a39431a944d9719d : FAILURE in 6m 22s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a2351a5d4c12402b8c400138d9fe1e13 : SUCCESS in 5m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/94584fdda1264eda85eda2ca9e000b68 : SUCCESS in 6m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/29f9aacbf9d14ffeb1914584f437b0c1 : SUCCESS in 7m 27s