Build failed. https://zuul.opendev.org/t/openstack/buildset/4663bd7b7f284997ac27fe79dbf62dcb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e7d0b5d4699c46e3b6a8761dabc56eb3 : SUCCESS in 4m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/39790820594a4be187b8348932558bbc : FAILURE in 2m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/50eede3702564ba9963c55a02e906119 : SUCCESS in 4m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/95363fbc66274c7386c563aefdff3acd : SUCCESS in 3m 56s