Build failed. https://zuul.opendev.org/t/openstack/buildset/a3127417f57e476e99bf0cf0c9e21c20 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/814660aff9cb4124a43f71eef484270f : FAILURE in 6m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1f7afaa0feb74ecbb9104375567d2e4d : SUCCESS in 5m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8a44f1fcca5648e1b4b864aea3853e13 : SUCCESS in 5m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8212e40d72984de4a8bdf1f9b09c9977 : SUCCESS in 5m 21s