Build failed. https://zuul.opendev.org/t/openstack/buildset/9d7028afb0b144698dfc8e7bd003b7cb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/683f48228c0641c39ce16bb14f355cfd : SUCCESS in 2m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/df869628e1bc48ca9c5e0fa6fc00b00f : FAILURE in 2m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bd8148afb1074496a6bab3ee65b196a2 : SUCCESS in 2m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a18e0345cfd34580b6d0a451b052e902 : FAILURE in 2m 24s