Build failed. https://zuul.opendev.org/t/openstack/buildset/040c97edcd784d6dbb65e34f75b8a17d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7e37857d07394bb08a935ec136697542 : FAILURE in 6m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/34be567c6abd41419b90e9e2c430418c : SUCCESS in 4m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6ae241b03a72485da4a3083e224e9044 : SUCCESS in 5m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/971a98b45ce94f629613b6d54e721b59 : SUCCESS in 5m 11s