我一直试图从日志中找出问题所在，但不知道如何解决它。以下是日志中的片段，我对如何修复有点困惑。任何帮助将不胜感激。
Could not load SystemTimer >= v1.2.0. Falling back to timeout.rb. SystemTimer is STRONGLY recommended for timeouts in Ruby 1.8.7. See http://ph7spot.com/blog/system-timer-1-2-release for details.
/app/.bundle/gems/ruby/1.8/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:306:in `depend_on': No such file to load -- spec_helper (LoadError)
这是在日志的顶部
from /app/.bundle/gems/ruby/1.8/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `run_initializers'
根据捆绑，正在使用以下宝石
根据bundle install，安装了以下gem
使用 rake (0.9.2) 使用 abstract (1.0.0) 使用 activesupport (3.0.3) 使用 builder (2.1.2) 使用 i18n (0.6.0) 使用 activemodel (3.0.3) 使用 erubis (2.6.6) 使用rack (1.2.4) 使用 rack-mount (0.6.14) 使用 rack-test (0.5.7) 使用 tzinfo (0.3.29) 使用 actionpack (3.0.3) 使用 mime-types (1.16) 使用 polyglot (0.3. 2) 使用treetop (1.4.10) 使用mail (2.2.19) 使用actionmailer (3.0.3) 使用arel (2.0.10) 使用activerecord (3.0.3) 使用activeresource (3.0.3) 使用bson (1.3.1) ) 使用 bson_ext (1.3.1) 使用 bundler (1.0.18) 使用carrierwave (0.5.7) 使用excon (0.6.6) 使用formatador (0.2.1) 使用multi_json (1.0.3) 使用net-ssh (2.1. 4) 使用 net-scp (1.0.4) 使用 nokogiri (1.5.0) 使用 ruby-hmac (0.4.0) 使用雾 (0.11.0) 使用 formtastic (1.2.4) 使用 mongo (1.3.1) 使用 plucky (0.3.8) 使用 mongo_mapper (0.9.2) 使用 thor (0.14.6) 使用 railties (3.0.3) 使用 rails (3.0.3) 使用 rails3-generators (0.17.4)
这是完整的heroku日志
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `run_initializers'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:134:in `initialize!'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:77:in `method_missing'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/config/environment.rb:5:in `<top (required)>'
2011-09-19T00:19:53+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require'
2011-09-19T00:19:53+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require'
2011-09-19T00:19:53+00:00 app[web.1]: from config.ru:3:in `block (3 levels) in <main>'
2011-09-19T00:19:53+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:23:in `eval'
2011-09-19T00:19:53+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:23:in `block (3 levels) in <main>'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:63:in `new'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:63:in `map'
2011-09-19T00:19:53+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:18:in `block (2 levels) in <main>'
2011-09-19T00:19:53+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
2011-09-19T00:19:53+00:00 heroku[web.1]: Process exited
2011-09-19T00:19:53+00:00 heroku[web.1]: State changed from starting to crashed
2011-09-19T00:31:24+00:00 heroku[web.1]: State changed from crashed to created
2011-09-19T00:31:24+00:00 heroku[web.1]: State changed from created to starting
2011-09-19T00:31:27+00:00 heroku[web.1]: Starting process with command `thin -p 42871 -e production -R /home/heroku_rack/heroku.ru start`
2011-09-19T00:31:31+00:00 app[web.1]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:304:in `rescue in depend_on': No such file to load -- spec_helper (LoadError)
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:299:in `depend_on'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:216:in `require_dependency'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:138:in `block (2 levels) in eager_load!'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:137:in `each'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:137:in `block in eager_load!'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:135:in `each'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:135:in `eager_load!'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:108:in `eager_load!'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application/finisher.rb:41:in `block in <module:Finisher>'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `instance_exec'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `run'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:50:in `block in run_initializers'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `each'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `run_initializers'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:134:in `initialize!'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:77:in `method_missing'
2011-09-19T00:31:31+00:00 app[web.1]: from /app/config/environment.rb:5:in `<top (required)>'
2011-09-19T00:31:31+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require'
2011-09-19T00:31:31+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require'
2011-09-19T00:31:31+00:00 app[web.1]: from config.ru:3:in `block (3 levels) in <main>'
2011-09-19T00:31:31+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:23:in `eval'
2011-09-19T00:31:31+00:00 heroku[web.1]: Process exited
2011-09-19T00:31:32+00:00 heroku[web.1]: State changed from starting to crashed
2011-09-19T00:40:49+00:00 heroku[slugc]: Slug compilation started
2011-09-19T00:40:59+00:00 heroku[api]: Deploy 50313f5 by naguibs@stanford.edu
2011-09-19T00:40:59+00:00 heroku[api]: Release v5 created by naguibs@stanford.edu
2011-09-19T00:40:59+00:00 heroku[web.1]: State changed from crashed to created
2011-09-19T00:40:59+00:00 heroku[web.1]: State changed from created to starting
2011-09-19T00:41:00+00:00 heroku[slugc]: Slug compilation finished
2011-09-19T00:41:02+00:00 heroku[web.1]: Starting process with command `thin -p 22238 -e production -R /home/heroku_rack/heroku.ru start`
2011-09-19T00:41:06+00:00 app[web.1]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:304:in `rescue in depend_on': No such file to load -- spec_helper (LoadError)
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:299:in `depend_on'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:216:in `require_dependency'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:138:in `block (2 levels) in eager_load!'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:137:in `each'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:137:in `block in eager_load!'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:135:in `each'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/engine.rb:135:in `eager_load!'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:108:in `eager_load!'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application/finisher.rb:41:in `block in <module:Finisher>'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `instance_exec'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `run'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:50:in `block in run_initializers'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `each'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `run_initializers'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:134:in `initialize!'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.3/lib/rails/application.rb:77:in `method_missing'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/config/environment.rb:5:in `<top (required)>'
2011-09-19T00:41:06+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require'
2011-09-19T00:41:06+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require'
2011-09-19T00:41:06+00:00 app[web.1]: from config.ru:3:in `block (3 levels) in <main>'
2011-09-19T00:41:06+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:23:in `eval'
2011-09-19T00:41:06+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:23:in `block (3 levels) in <main>'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:63:in `new'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:63:in `map'
2011-09-19T00:41:06+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:18:in `block (2 levels) in <main>'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize'
2011-09-19T00:41:06+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:11:in `new'
2011-09-19T00:41:06+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:11:in `block in <main>'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
2011-09-19T00:41:06+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize'
2011-09-19T00:41:06+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:1:in `new'
2011-09-19T00:41:06+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:1:in `<main>'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/rack/adapter/loader.rb:36:in `eval'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/rack/adapter/loader.rb:36:in `load'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/controllers/controller.rb:175:in `load_rackup_config'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/controllers/controller.rb:65:in `start'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/runner.rb:177:in `run_command'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/runner.rb:143:in `run!'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/bin/thin:6:in `<top (required)>'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/bin/thin:19:in `load'
2011-09-19T00:41:06+00:00 app[web.1]: from /usr/ruby1.9.2/bin/thin:19:in `<main>'
2011-09-19T00:41:06+00:00 heroku[web.1]: Process exited
2011-09-19T00:41:07+00:00 heroku[web.1]: State changed from starting to crashed
谢谢！