Build failed. https://zuul.opendev.org/t/openstack/buildset/8b2e3901ce82452c948ea4d5bf895960 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7bf799bdf3e940fe8cdcdfd4354cd92e : SUCCESS in 5m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/25f9e42bf68d4e5d9466bd4faa624982 : SUCCESS in 3m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7a991d74812546ad9ef97fe4b74f3961 : FAILURE in 3m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cbbc8f4258144fa5b5c79e5144117c5d : FAILURE in 4m 14s