Build failed. https://zuul.opendev.org/t/openstack/buildset/3b728dd07f394e169797307e015d2e6e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e4e9385475b34bb6a3775566138d5041 : SUCCESS in 3m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/63cc556127164e67a01a0bcc1ffdd3fb : FAILURE in 3m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fd61e04758764bca978e5af644274b0b : SUCCESS in 3m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3bb30dec2688487f87c0317f5ad7ec25 : SUCCESS in 3m 53s