Build failed. https://zuul.opendev.org/t/openstack/buildset/4e3fdc0ac2424b15a606d13335e11dfa - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bfabd87a3fe14875b6b3883c926adbdc : FAILURE in 5m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/008f0116703d47b1b1dbb7cc00c77a3e : FAILURE in 4m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e8d71bdffed04e47b9983192c62d0fcd : FAILURE in 5m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ed4fa64da1334b009ecd1c537b48bc05 : FAILURE in 5m 26s