Build failed. https://zuul.opendev.org/t/openstack/buildset/f18512aa09544b30b6111034ca0537bc - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/59710726e1f94ade8e7b79380d72b255 : SUCCESS in 4m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a940b8e459764269bbcab0df3f2e1e3d : SUCCESS in 2m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4a47953541ed4a5180842b26b119f379 : SUCCESS in 3m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/610a288d099541de84eb58f505c03504 : FAILURE in 3m 43s