Build failed. https://zuul.opendev.org/t/openstack/buildset/6c71e53c824e4db99a4188517ac23099 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b1986484635c457d96e600b3a23188ec : SUCCESS in 3m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/96c3c377ca0146c6946225ad1eefd2e9 : SUCCESS in 3m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5b2f10a6d1e847bbabd78146550f4bcb : SUCCESS in 2m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bba948e8653e4dd3913f237739aca6f5 : FAILURE in 2m 37s