当我发出以下问题时，我遇到了 capistrano 的问题：
帽部署
** [out :: ***] rake aborted!
** [out :: ***] Killed
** [out :: ***]
** [out :: ***] (in /home/deployer/apps/webapp/releases/20130203054234/app/assets/javascripts/application.js)
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:142:in `exec_runtime'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:28:in `block in exec'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:41:in `compile_to_tempfile'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:27:in `exec'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/uglifier-1.3.0/lib/uglifier.rb:100:in `compile'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/compressors.rb:74:in `compress'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/processing.rb:265:in `block in js_compressor='
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/processor.rb:29:in `call'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/processor.rb:29:in `evaluate'
** [out :: ***]
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/tilt-1.3.3/lib/tilt/template.rb:76:in `render'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:193:in `block in evaluate'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `each'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `evaluate'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/bundled_asset.rb:26:in `initialize'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `new'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `build_asset'
** [out :: ***]
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:93:in `block in build_asset'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/caching.rb:19:in `cache_asset'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:92:in `build_asset'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:169:in `find_asset'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:60:in `find_asset'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/static_compiler.rb:19:in `block in compile'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:219:in `block in each_logical_path'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:206:in `block (2 levels) in each_file'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each_entry'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:204:in `block in each_file'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each_file'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:217:in `each_logical_path'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/static_compiler.rb:18:in `compile'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:56:in `internal_precompile'
** [out :: ***] /home/deployer/apps/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:74:in `block (3 levels) in <top (required)>'
** [out :: ***]
** [out :: ***] Tasks: TOP => assets:precompile:nondigest
** [out :: ***] (See full trace by running task with --trace)
但是，当我先停止该过程然后进行部署时，一切正常。还有其他人遇到同样的问题吗？
上限部署：停止
帽部署
谢谢！