Build failed. https://zuul.opendev.org/t/openstack/buildset/8521af99ec61402fb9f71289c1af88f2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/62e4e61c9e254cdb9fedb9f453dbbbc1 : FAILURE in 4m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3560ff7b43364723985fba52ec5ff9b6 : SUCCESS in 4m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ed17e51b584f4d8c97592a0ffe4a2eca : SUCCESS in 3m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0eba5c810ab14d2498225215a51656b9 : SUCCESS in 3m 36s