Build failed. https://zuul.opendev.org/t/openstack/buildset/669dec309cba40619ed4cde9324ae7d0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f1b0521dc9b7458ebe20766cd9aeae65 : FAILURE in 4m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ba10fd022dde4fa9b9445301e879f49d : SUCCESS in 4m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/08324b2fc57d4d2ca866a93113c85063 : SUCCESS in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f899a7e6e71d46e3a7cc87b0e0b26a92 : SUCCESS in 3m 24s