Build failed. https://zuul.opendev.org/t/openstack/buildset/4c56adf0050d4e5285a68a8540a58890 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b7e9e3d65fcf4a238fa44aa54151d92d : SUCCESS in 2m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/238e58574ac046f09e49ccb26b44b19e : SUCCESS in 3m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/215cf5e52bda4bd3865e5a48c345c288 : SUCCESS in 2m 46s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2f0d4eed28d24039a0b16664c018eba0 : FAILURE in 2m 59s