Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/da30339f47cd444290d08cebc464f7a6 : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c24c84a3a7204708896e03b5e11b7a01 : SUCCESS in 6m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ef26df248f1447d2a9f5d1dc17cf6127 : SUCCESS in 6m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f7f81891f24943cf9d4713ce73437870 : FAILURE in 4m 03s