Build failed. https://zuul.opendev.org/t/openstack/buildset/28f62bee322f44d0adf3bad70e553724 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5b57d4f514354c9aaa986953a3531751 : SUCCESS in 3m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/856487cc64df4081b09397f8638e8b28 : FAILURE in 4m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0036b6f34db04b148a7b83ee519f4bd2 : SUCCESS in 2m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1fc005aec8844682a52dc0fa98dbf293 : FAILURE in 2m 43s