Build failed. https://zuul.opendev.org/t/openstack/buildset/3c1aee30ccc64459bef589c550b68451 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fb875dd254f84e95a94e2aabe2c242f9 : SUCCESS in 4m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/55c01e19be5e45669a0db0b2d650f448 : FAILURE in 3m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/06de3f24c3e047fd996dc8f021458dff : SUCCESS in 4m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0606d76868314b30b20823b8d7882daf : SUCCESS in 4m 15s