Build failed. https://zuul.opendev.org/t/openstack/buildset/d3a588dadfe64b3a97ed4c5277673d4b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c786854548e647a19fa35691600a1398 : FAILURE in 6m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/df3690d6893444eb9595f178817fc234 : SUCCESS in 5m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1640e1d9a13d4fbbac160ba4dd5769ce : SUCCESS in 7m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3c685a6c297e475bbbd5ed4d4d44ef97 : SUCCESS in 6m 35s