Build failed. https://zuul.opendev.org/t/openstack/buildset/fae57f633a004cf0963ece2b5747e328 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0dec86e042444aea93f3ce1aa747be00 : SUCCESS in 3m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9433164ebee3496995995b2f1286ac33 : FAILURE in 3m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cbb4643108f64925b289f13a33ae3347 : SUCCESS in 3m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/92cf63ee792c4c7591fbf197217b9027 : FAILURE in 2m 54s