从master分支构建ember.js的问题

我是安装了OSX 10.7.5的macbook pro，我已经尝试了几次按照github页面上的步骤构建ember.js，基本上在克隆的存储库中运行“rake dist” . 但它不起作用 . 当我运行“rake dist”时，请在我的控制台输出下面找到 . 因为我不是一个红宝石专家，我想知道是否有人能指出我某个方向，因为我不明白阻止我构建ember.js的错误 .

[ alex@io ][ ~/workspace/ember.js ][ master ]
➜  rake dist --trace
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/rake_module.rb:25: warning: redundant nested repeat operator
** Invoke dist (first_time)
** Execute dist
Building Ember...
rake aborted!

/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:142:in `exec_runtime'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:28:in `block in exec'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:41:in `compile_to_tempfile'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:27:in `exec'
/Users/alex/.bundler/ruby/1.9.1/uglifier-2f6c31a67d6d/lib/uglifier.rb:137:in `really_compile'
/Users/alex/.bundler/ruby/1.9.1/uglifier-2f6c31a67d6d/lib/uglifier.rb:74:in `compile'
/Users/alex/.bundler/ruby/1.9.1/uglifier-2f6c31a67d6d/lib/uglifier.rb:47:in `compile'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-web-filters-1a6dc173776b/lib/rake-pipeline-web-filters/uglify_filter.rb:62:in `block in generate_output'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-web-filters-1a6dc173776b/lib/rake-pipeline-web-filters/uglify_filter.rb:58:in `each'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-web-filters-1a6dc173776b/lib/rake-pipeline-web-filters/uglify_filter.rb:58:in `generate_output'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/filter.rb:218:in `block (3 levels) in generate_rake_tasks'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/file_wrapper.rb:135:in `create'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/filter.rb:218:in `block (2 levels) in generate_rake_tasks'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:228:in `call'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:228:in `block in execute'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:223:in `each'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:223:in `execute'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/Users/alex/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/dynamic_file_task.rb:154:in `invoke_with_call_chain'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:152:in `invoke'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/dynamic_file_task.rb:60:in `invoke'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline.rb:328:in `block (2 levels) in invoke'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline.rb:328:in `each'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline.rb:328:in `block in invoke'
:10:in `synchronize'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline.rb:321:in `invoke'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/project.rb:126:in `each'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/project.rb:126:in `block in invoke'
:10:in `synchronize'
/Users/alex/.bundler/ruby/1.9.1/rake-pipeline-50b8d77b703c/lib/rake-pipeline/project.rb:112:in `invoke'
/Users/alex/workspace/ember.js/Rakefile:43:in `block in '
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:228:in `call'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:228:in `block in execute'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:223:in `each'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:223:in `execute'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/Users/alex/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/task.rb:152:in `invoke'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:143:in `invoke_task'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:101:in `each'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:101:in `block in top_level'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:110:in `run_with_threads'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:95:in `top_level'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:73:in `block in run'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:160:in `standard_exception_handling'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/lib/rake/application.rb:70:in `run'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.6/bin/rake:37:in `'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `load'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `eval'
/Users/alex/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `'
Tasks: TOP => /Users/alex/workspace/ember.js/tmp/rake-pipeline-7aa53b2ead15d9e299f5cd1196d85943d735c070/rake-pipeline-3-tmp-7/ember-runtime.min.js

这是我在主分支的repo的根目录中运行 bundle install 时的输出

➜  bundle install
Using rake (0.9.6) 
Using colored (1.2) 
Using multi_json (1.3.7) 
Using execjs (1.4.0) 
Using multipart-post (1.1.5) 
Using faraday (0.8.4) 
Using hashie (1.2.0) 
Using nokogiri (1.5.5) 
Using httpauth (0.2.0) 
Using jwt (0.1.5) 
Using rack (1.4.1) 
Using oauth2 (0.8.0) 
Using github_api (0.8.1) 
Using mime-types (1.19) 
Using rest-client (1.6.7) 
Using github_downloads (0.1.3) from https://github.com/pangratz/github_downloads.git (at master) 
Using json (1.7.6) 
Using listen (0.6.0) 
Using kicker (2.6.1) 
Using thor (0.16.0) 
Using rake-pipeline (0.8.0) from https://github.com/livingsocial/rake-pipeline.git (at master) 
Using rake-pipeline-web-filters (0.6.0) from https://github.com/wycats/rake-pipeline-web-filters.git (at master) 
Using uglifier (1.3.0) from https://github.com/lautis/uglifier.git (at master) 
Using bundler (1.2.3) 
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

先谢谢你，Alex