Build failed. https://zuul.opendev.org/t/openstack/buildset/115d91669f304a0ab9a837ba6cfce1ef - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2d860f4253f2411fbd6426d81b59816c : RETRY_LIMIT in 1m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/66e3e05db4514badbbc34b9d0b97efc2 : RETRY_LIMIT in 1m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/33290c47ed384359863e76926f26a5d2 : RETRY_LIMIT in 1m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/77e8bb36877c4f0f94b8bcb8eb08698d : SUCCESS in 20m 41s