---
Hash (size=2 message='My nested hash'):
  Pair 0:
    Key:
      Symbol (size=1):
        to_s: a
        encoding: !ruby/encoding US-ASCII
    Value:
      Hash (size=2):
        Pair 0:
          Key:
            Symbol (size=1):
              to_s: b
              encoding: !ruby/encoding US-ASCII
          Value: Fixnum 0
        Pair 1:
          Key:
            Symbol (size=1):
              to_s: c
              encoding: !ruby/encoding US-ASCII
          Value: Fixnum 1
  Pair 1:
    Key:
      Symbol (size=1):
        to_s: d
        encoding: !ruby/encoding US-ASCII
    Value:
      Hash (size=2):
        Pair 0:
          Key:
            Symbol (size=1):
              to_s: e
              encoding: !ruby/encoding US-ASCII
          Value: Fixnum 2
        Pair 1:
          Key:
            Symbol (size=1):
              to_s: f
              encoding: !ruby/encoding US-ASCII
          Value: Fixnum 3