当我运行时，在我的一台 linux 服务器上...
bundle exec rake assets:precompile RAILS_ENV=production --trace
我收到以下错误...
** Invoke assets:precompile (first_time)
** Execute assets:precompile
/usr/local/bin/ruby /srv/www/example.com/shared/bundle/ruby/1.9.1/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace
** 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 (): [/usr/local/bin/ruby /srv/www/example.com/s...]
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:53:in `block in create_shell_runner'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `call'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `sh'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `sh'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:80:in `ruby'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `ruby'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:12:in `ruby_rake_task'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `call'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `block in execute'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `each'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `execute'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:152:in `invoke'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:143:in `invoke_task'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `each'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block in top_level'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:110:in `run_with_threads'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:95:in `top_level'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:73:in `block in run'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
/srv/www/example.com/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/srv/www/example.com/shared/bundle/ruby/1.9.1/bin/rake:23:in `load'
/srv/www/example.com/shared/bundle/ruby/1.9.1/bin/rake:23:in `<main>'
我正在使用 Rails 3.2.11，尝试挖掘 rake 代码，但我不是 rake 专家。有人经历过吗？不确定如何调试？谢谢。