Build failed. https://zuul.opendev.org/t/openstack/buildset/1795b18346c04815b5868c61db70cc34 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7e8bf078c51b4197882399f3d2050dac : SUCCESS in 3m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/02de6b20b826425c90342547365b0d33 : SUCCESS in 3m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0b0a9703b6554db7aa2d64ee82fb276c : RETRY_LIMIT in 4s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0ff9e54c1e834306badd962e16611eb6 : RETRY_LIMIT in 6s