Build failed. https://zuul.opendev.org/t/openstack/buildset/33fcc8b1d5dc462eba541c6cd0a6e04d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3c147594613143aba6a33228677342b7 : SUCCESS in 3m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/46f2edfc5f414cde9bd520914e343799 : FAILURE in 3m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1e97efcaee9b4f9884b983a70f82c497 : SUCCESS in 3m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a54abe6715d64bdab38549ef43274945 : SUCCESS in 3m 37s