Build failed. https://zuul.opendev.org/t/openstack/buildset/29b5b6010ef546209aa1ebe33aa6bf60 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/58302c25fcf845f39982c3d66aee82a8 : SUCCESS in 4m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cfe4951bc3b1487391c205946deaace7 : FAILURE in 3m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f7cfa3bbb8804009ae912717779d95fb : SUCCESS in 3m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cf8a1f0b44de47aa8306c67b4e9c28a9 : SUCCESS in 3m 46s