Build failed. https://zuul.opendev.org/t/openstack/buildset/93d772b9d97c4fb58f3356e5ae28569a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e9a9590b841f46d2afb90cc20e1d12a8 : SUCCESS in 4m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1974b964dab545aab5621966b225d71e : FAILURE in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2c8a2d707fc444e7a12b9ad79588ac45 : SUCCESS in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/98ed4ed7927240e48f7aa33c3c85b673 : SUCCESS in 3m 23s