Build failed. https://zuul.opendev.org/t/openstack/buildset/be5bb9dc0f3848628d9350c11165a43a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f1d9c3c796c6400186838bc53bf4d369 : SUCCESS in 3m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7c329c1b52d74aa1b1c2a092308a0c90 : SUCCESS in 3m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/25cb9f9cd7c44f38b20ad2c162385af4 : FAILURE in 2m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/68339d6937644a93bc50c59b2c15cf21 : FAILURE in 2m 55s