Build failed. https://zuul.opendev.org/t/openstack/buildset/7e42ea0342c045799f11c96c914b81fd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f08dd8a758b04c9785adb1bda1fdf953 : SUCCESS in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ec6eff9775ea42cb81c82b7530c9beb7 : SUCCESS in 3m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d7b472e1671e47b69c85872eda3a5f14 : FAILURE in 4m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c7f802c87057404ca9e9dfaf6e7809b0 : FAILURE in 3m 47s