Build failed. https://zuul.opendev.org/t/openstack/buildset/a7919e54c86d449694fc46c0d728579f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e1b8fcbd0c0941a8940abd84f2179b28 : SUCCESS in 5m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ba6bd98a3ace44dda70f2e827c4985ff : SUCCESS in 4m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8ae246ac88a14751a1c744f202154648 : SUCCESS in 5m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8fcb013c27c1425bb5953d545882009b : FAILURE in 5m 00s