Comment 1 for bug 1873058

The change is skipping this test on all architectures, not just s390x. And it looks like a real failure, at first glance, instead of something flaky or a race:

  1) Bunny::Queue#subscribe provides delivery handler access to message properties
     Failure/Error: expect(metadata.headers["participants"]).to eq 11

       expected: 11
            got: [11]

       (compared using ==)
     # ./spec/higher_level_api/integration/message_properties_access_spec.rb:72:in `block (2 levels) in <top (required)>'

Once a test is being skipped, it's hard to be brought back in... Can you please file an upstream bug, link it to a launchpad one, so that we have some hope to put this test back in?

Too bad it's in debian already, there should be a link to this to-be-filed bug next to the blacklist variable, to track why a test is being skipped. Maybe you can commit something like that to debian?