Build failed. https://zuul.opendev.org/t/openstack/buildset/e5398d19f2a94a9d9fd3fc790130a604 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/212f2b11daf74aa7a958c7adfc5dd187 : SUCCESS in 2m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0fe6dc628da648f78850950a02e0f986 : SUCCESS in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3e8c0193e30a4a16bd7373a1917dfab2 : SUCCESS in 2m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2be06b70074048ffaba8bc62b2717bf0 : FAILURE in 2m 46s