Build failed. https://zuul.opendev.org/t/openstack/buildset/cca6ab06e674424885ffe49a041443ca - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3dcf098f1e814f82bcdcf9f62fb3e7e8 : SUCCESS in 4m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3a32602adcff4b65a8954d2d74b7c3c2 : SUCCESS in 4m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b1d058b2d9a14ff7af24ddd2d8df8690 : SUCCESS in 4m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8f2595ae3168454db0c5969389d95dc6 : FAILURE in 4m 22s