Build failed. https://zuul.opendev.org/t/openstack/buildset/38b9620426ce4edcacafc6e72b80a182 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9f2174cbcb5f4b78b6aa4fcb62808af4 : SUCCESS in 4m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5d43fea2c0d94a88b47009b8484c040b : SUCCESS in 4m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e516c8fdc79f46c98468bf8d3ca67059 : SUCCESS in 4m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/103ec7e1eb0045e091f1f285f219f755 : FAILURE in 4m 33s