Build failed. https://zuul.opendev.org/t/openstack/buildset/4034473e3064425590d4f54643c9554d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c50c9c1cf6554d74912c3873ff2f20ea : SUCCESS in 3m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/dee0f3db628d491cbc3c9fa2f5bf4d4a : SUCCESS in 3m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8ecd47aefb9d4d7695ac0af3c14f8489 : FAILURE in 3m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/241dd431eb2e4cbe8aef2e6200cd673e : FAILURE in 2m 55s