title: engineyard deploy block in replace_bin_path: can't find executable rake error
body: <p>my application is on rails 3.2.1 ,rake 0.9.2.2, gems 1.8.15 it is working fine on local host.
  As i trying to deploy on engineyard am getting the error message in there log file    </p>
  
  <p>/usr/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in <code>require': iconv will be deprecated in the future, use String#encode instead.
  /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/vendor/thor/lib/thor/shell.rb:10: Use RbConfig instead of obsolete and deprecated Config.
  /usr/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/rubygems_integration.rb:219:in</code>block in replace_bin_path': can't find executable rake (Gem::Exception)
      from /data/emailsending/releases/20120206123528/ey_bundler_binstubs/rake:16:in <code>&lt;main&gt;'
  /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/task.rb:62:in</code>run_on_roles': #, @server=#, @args=[false]> (EY::Serverside::RemoteFailure)
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/task.rb:44:in <code>run'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/deploy.rb:278:in</code>migrate'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/task.rb:34:in <code>roles'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/deploy.rb:275:in</code>migrate'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/deploy.rb:160:in <code>send'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/deploy.rb:160:in</code>run_with_callbacks'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/deploy.rb:37:in <code>cached_deploy'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/engineyard-serverside/deploy.rb:457:in</code>with_failed_release_cleanup'
       ... 11 levels...
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/lib/vendor/thor/lib/thor.rb:124:in <code>start'
      from /usr/local/ey_resin/ruby/lib/ruby/gems/1.8/gems/engineyard-serverside-1.5.28/bin/engineyard-serverside:10
      from /usr/local/ey_resin/ruby/bin/engineyard-serverside:19:in</code>load'
      from /usr/local/ey_resin/ruby/bin/engineyard-serverside:19</p>