Build failed. https://zuul.opendev.org/t/openstack/buildset/b3632d3628cb4679aff09c518ba3cd9e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/309a1cf86d5947ce914b0c10d9f48679 : SUCCESS in 2m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ebcbacbdf77341c586233207c9cba2ec : FAILURE in 2m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/769e769f7ca34626977a7d1e4dd03947 : SUCCESS in 4m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1bb79bd9c68d4651bc2f8d575cd4945b : FAILURE in 3m 10s