Build failed. https://zuul.opendev.org/t/openstack/buildset/dd6cac769dfd4206b835caa7100ce4ff - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3bc41d630ae44de197ba50e23d6d1749 : SUCCESS in 4m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9cd98d6aadc14531bea50cd121b134e1 : SUCCESS in 7m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/beedb9bc49954ba68785c1b1891cfc24 : SUCCESS in 5m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d818136be350465aaa5de389b61b45f6 : FAILURE in 3m 58s