-----> Using Ruby version: ruby-2.1.0
-----> Installing dependencies using Bundler version 1.3.2
       Ruby version change detected. Clearing bundler cache.
       Old: ruby 2.0.0p353 (2013-11-22 revision 43784) [x86_64-linux]
       New: ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-linux]

支持的真够神速的。