super from singleton method that is defined to multiple classes is not supported; this will be fixed in 1.9.3 or later
/usr/local/lib/ruby/site_ruby/1.9.1
/usr/local/lib/ruby/site_ruby/1.9.1/x86_64-linux
/usr/local/lib/ruby/vendor_ruby/1.9.1
/usr/local/lib/ruby/vendor_ruby/1.9.1/x86_64-linux
/usr/local/lib/ruby/1.9.1
/usr/local/lib/ruby/1.9.1/x86_64-linux
ruby 1.9.3p551 (2014-11-13 revision 48407) [x86_64-linux]
1.9.3
