Build failed. https://zuul.opendev.org/t/openstack/buildset/b28987141f134fa3aa8f25045b530dfc - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c896c0c042d242ecab28994dae64fba9 : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4ba463618daa4a0189cfdaeb2f77b0ff : FAILURE in 3m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c3b329948f0e4df89ee21ffb74e82d83 : SUCCESS in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e58688a779fd42bebd4bbd18be3e68dd : SUCCESS in 4m 08s