Build failed. https://zuul.opendev.org/t/openstack/buildset/cb64e05db7b749fd8f32036bba7b70f3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9349156e5276491693b616aa7cb69110 : FAILURE in 8m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f34989d9f6da419197bce6e06075060e : SUCCESS in 6m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b2c9664fdb1a4a618a8c7399e668a6f8 : SUCCESS in 5m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/816fb748aa1a4badb7b55f9ce60b6b4c : SUCCESS in 6m 23s