---
Hash (message='My circular hashes'):
  size: 1
  default: 
  default_proc: 
  Pair 0:
    Key:
      Symbol:
        to_s: foo
        size: 3
        encoding: !ruby/encoding US-ASCII
    Value:
      Hash:
        size: 1
        default: 
        default_proc: 
        Pair 0:
          Key:
            Symbol:
              to_s: bar
              size: 3
              encoding: !ruby/encoding US-ASCII
          Value: Hash {:foo=>{:bar=>{...}}}