我无法在生产模式下编译资产，我正在使用命令
rake assets:precompile --trace RAILS_ENV=production
我收到此错误：
** Invoke assets:precompile:all (first_time)
** Execute assets:precompile:all
** Invoke assets:precompile:primary (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Invoke tmp:cache:clear (first_time)
** Execute tmp:cache:clear
** Execute assets:precompile:primary
rake aborted!
Command failed with status (): [/root/.rbenv/versions/1.9.3-p327/bin/ruby ...]
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:53:in `block in create_shell_runner'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `call'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `sh'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `sh'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:80:in `ruby'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `ruby'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/sprockets/assets.rake:9:in `ruby_rake_task'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/sprockets/assets.rake:17:in `invoke_or_reboot_rake_task'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/sprockets/assets.rake:25:in `block (2 levels) in <top (required)>'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `call'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `block in execute'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `each'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `execute'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:152:in `invoke'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:143:in `invoke_task'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `each'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block in top_level'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:110:in `run_with_threads'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:95:in `top_level'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:73:in `block in run'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
/root/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/root/.rbenv/versions/1.9.3-p327/bin/rake:23:in `load'
/root/.rbenv/versions/1.9.3-p327/bin/rake:23:in `<main>'
Tasks: TOP => assets:precompile
看起来它与rake gem相关，我的猜测，我不确定。任何提示？ 谢谢