gistfile1.txt

irb(main):005:0> Object.not_a_method
NoMethodError: no method 'not_a_method' on Object (Class)
   from Kernel(Class)#not_a_method (method_missing) at kernel/delta/kernel.rb:83
   from (irb):5
irb(main):006:0> exit
kronos:rubinius kronos$ rvm use 1.8.7

Now using ruby 1.8.7 p248

kronos:rubinius kronos$ irb
irb(main):001:0> Object.not_a_method
NoMethodError: undefined method `not_a_method' for Object:Class