Build failed. https://zuul.opendev.org/t/openstack/buildset/eada026f84bf4b01a02f2d5814662521 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a3372760196944e7b899dc43a6d0413d : FAILURE in 13m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/934fed3eb7e843b6a31d5a1b418e9900 : SUCCESS in 4m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f58fe9cbf1d1430695a6a3bd178656a2 : SUCCESS in 10m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2762387e15294afcb704d62dc7df446c : SUCCESS in 9m 39s