gistfile1.txt

rubinius 2.2.10.n178 (2.1.0 18751108 2014-06-27 D) [x86_64-darwin13.2.0]
An exception occurred running foo.rb:

    protected method `hash' called on an instance of User. (NoMethodError)

Backtrace:

  Kernel(User)#hash (method_missing) at kernel/delta/kernel.rb:78
        Rubinius::IdentityMap#insert at kernel/common/identity_map.rb:45
   { } in Rubinius::IdentityMap#load at kernel/common/identity_map.rb:255
                          Array#each at kernel/bootstrap/array.rb:76
   { } in Rubinius::IdentityMap#load at kernel/common/identity_map.rb:255
                          Array#each at kernel/bootstrap/array.rb:76
          Rubinius::IdentityMap#load at kernel/common/identity_map.rb:254
          Rubinius::IdentityMap.from at kernel/common/identity_map.rb:25
                         Array#uniq! at kernel/common/array.rb:1650
                   Object#__script__ at foo.rb:16
    Rubinius::CodeLoader#load_script at kernel/delta/code_loader.rb:66
    Rubinius::CodeLoader.load_script at kernel/delta/code_loader.rb:152
             Rubinius::Loader#script at kernel/loader.rb:649
               Rubinius::Loader#main at kernel/loader.rb:825