Build failed. https://zuul.opendev.org/t/openstack/buildset/8a392c81619a4f25a33dfc89cda90dd6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/671b84f1779942c3a277b195859c8067 : SUCCESS in 2m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/668c1a116043431cbabf71be380ad23f : SUCCESS in 3m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/00c31bf1fdb04e259cddd53d02190683 : FAILURE in 3m 10s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/86ba9f87555944969203bdeb40986d1e : FAILURE in 2m 52s