Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f39fc7e3d37f4c538d1200082de38257 : SUCCESS in 20m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c7abeaf939514d9e9c22629a0ccea2dd : FAILURE in 2m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ad75d94e52a94420aae4bc37a25e1e66 : SUCCESS in 10m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/42532410c58a429291ff5f990f26ee76 : SUCCESS in 6m 07s