Build failed. https://zuul.opendev.org/t/openstack/buildset/88decf1f82ee4e07b8592848237ea48c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0ce9bfb9a97c484e8e68e1303338d472 : SUCCESS in 3m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/637a94c08ee044199cde496efdcbec3c : SUCCESS in 3m 27s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/87b0f12b30cc42469b9abab98a690056 : FAILURE in 3m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/32b413a1fb754a3699ad5a357b73b3a2 : FAILURE in 3m 09s