How not to implement nested exceptions in Ruby

gistfile1.txt

class FooException < StandardError
end

class BarException < StandardError
  attr_reader :exception

  def initialize(exception)
    @exception = exception
  end
end

begin
  begin
    raise FooException
  rescue => e
    puts "Got an inner #{e.class}...raising BarException with it nested."
    raise BarException.new(e)
  end
rescue => e
  puts "Got an outer #{e.class}. This should only ever be a BarException, which wraps all other inner exceptions."
end