Build failed. https://zuul.opendev.org/t/openstack/buildset/fab8d301a596406dbade9abbe0da5cf9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/06b9430e3dfd4f738e38c2136e68c8af : SUCCESS in 4m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/27d0f583786a4d84b72f91e2b5baa1dc : FAILURE in 4m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/aec42728bf2449569998f13486c7886b : SUCCESS in 4m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/abb1788d8f90400daa910ecb0d178bb3 : FAILURE in 3m 44s