Build failed. https://zuul.opendev.org/t/openstack/buildset/04d657d0878548d78451a8013a95c4bd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fd44914e92f344edab15adb1ae9488af : SUCCESS in 4m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/20831b1b0c134d40bdc7541ac21cc113 : SUCCESS in 4m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c31b2b5a3d0348f48f96bedaae1b4db4 : SUCCESS in 3m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3b6601a6476e4781a3098b5b73db6312 : FAILURE in 2m 57s