Build failed. https://zuul.opendev.org/t/openstack/buildset/2303fe8246344e598ef8fbe6c7671b03 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d5b653824f2d48e18787ee46e7b79aa8 : SUCCESS in 2m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b27feaaa4b5c4a1f9a33e22f4586e659 : SUCCESS in 2m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/64920243860944c59314390f5afc37c6 : FAILURE in 2m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e0aa2ede788a4eebac7298e68558c1aa : FAILURE in 2m 49s