Build failed. https://zuul.opendev.org/t/openstack/buildset/c9a4e4a18f754a7ebe3478273228132e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2396e73bc0cc4d899e294c8a7ba57c39 : SUCCESS in 5m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/86602f67219a4d8ab4501d82e16b1916 : FAILURE in 6m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4520040a162145d39ad287ce944d754c : SUCCESS in 6m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/004af141967b4da5ad06e3e643322219 : SUCCESS in 4m 21s