Build failed. https://zuul.opendev.org/t/openstack/buildset/bcf6cbbcc1b04da3aa02d8fef42d9da2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9be3fa87d5bf4969bd11160297a954ab : SUCCESS in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8562e8776e2a41b1a2524a6879db6806 : SUCCESS in 4m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e9c6c409289a4929b0a5d7db753895d8 : FAILURE in 5m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2d0fadac6ca644d0b4bbdd6407bf5d75 : FAILURE in 5m 16s