Build failed. https://zuul.opendev.org/t/openstack/buildset/8e553885b5a24a4bbf5188c568d2bb9b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4dd5ab9a99734d14a33c053320bccab9 : FAILURE in 6m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2f800b668b2a43e09b2c377829f57a87 : SUCCESS in 5m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/478569319b424a74841ec142d2d2f424 : SUCCESS in 6m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ed800bdc4f7446b0bef9bfcef9cb9969 : SUCCESS in 5m 55s