Build failed. https://zuul.opendev.org/t/openstack/buildset/43d76723053b44518ffedc7d0b90f1d7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d09dd059a5f544b8b3c82a685316bda1 : SUCCESS in 5m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4a4c6239927541909d3edba0aaecbc3e : FAILURE in 4m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/326461ebf61a44eb8d66cfdf0cb3e0bb : SUCCESS in 4m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bf870686bb1d44a69c7cd31b24199a34 : SUCCESS in 6m 08s