Build failed. https://zuul.opendev.org/t/openstack/buildset/aa1fb6d38604482785ae8e3b4dc63d05 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/36b6b7602bf24fd7bcf648bffce30b84 : SUCCESS in 4m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d65e9aa2a9ea43098a8a0be9544928b2 : SUCCESS in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/10e67ec21fb54f6bb085829e9665027b : FAILURE in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c28d67dbd9f641579ed4858429c1cd45 : FAILURE in 2m 57s