Build failed. https://zuul.opendev.org/t/openstack/buildset/ecdcfe58ece24a80ad0100356a96512a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ba3d045dc8c34032a7ce3777dc0ed2c8 : SUCCESS in 4m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/73f7329f13984114ae7ea182282c220c : SUCCESS in 5m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d76106c604674bed8daac9b16144ef5d : SUCCESS in 4m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8f986d345358442bb360a5cd53fd39a8 : FAILURE in 4m 33s