rails/rails — pull request #10825 by arunagw (2013-06-02 18:42:58+00:00)
Title: No need to load 'rake/packagetask' as it's already in 'rubygems/package_task'

It's already required here

https://github.com/rubygems/rubygems/blob/master/lib/rubygems/package_task.rb#L29