Build failed. https://zuul.opendev.org/t/openstack/buildset/9ee848ab48ca4182986b1dcd1b5c9788 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0381c42b30fd421dac1f90f4500659f6 : SUCCESS in 4m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d4cb818e2f3443e1a62b6cdcd41972d0 : FAILURE in 3m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0a594eac08844cbc998c2b994e473748 : SUCCESS in 3m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0d5c702cff794b279d800e22d703f69f : SUCCESS in 4m 23s