Build failed. https://zuul.opendev.org/t/openstack/buildset/fe6d6ccff63d4f98ba537d7a84f6c542 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4d262b50bf5e4f6a8982a14f7be68a08 : SUCCESS in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/11769cc99cba4d4eb12d497429b0d1ea : SUCCESS in 3m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6a3a7c8780d14e0eac042623108db057 : FAILURE in 4m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8dccdd03b94842788321148225dfd512 : FAILURE in 3m 45s