Build failed. https://zuul.opendev.org/t/openstack/buildset/953aa77034924d079f5d415b1b69b6d8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/77f768e93fad46f7b3e32fd9513a761c : SUCCESS in 3m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/395df1b533914a599cacfb030638cdda : SUCCESS in 2m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/749802882cd24343a9224e217b575f2d : FAILURE in 2m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a460bf0a45b648af952c60d6936a4375 : FAILURE in 3m 24s