Build failed. https://zuul.opendev.org/t/openstack/buildset/02e726b7741b40d2be4c2fefa0324f38 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3e82e45ffc9b423bb78c9177e428d736 : SUCCESS in 3m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1cfdb3ebcf584ea98563e6a610294fc4 : FAILURE in 2m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2cad7cbadea94a3eadfae8c19d9e09da : SUCCESS in 3m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ddaf5328027c4084b991a48991758ff9 : FAILURE in 3m 20s