我的博客应用程序在我的本地系统中运行良好。当部署到 heroku（运行命令 git push heroku master）时，会显示下面的错误消息。
$ heroku logs：
←[36m2013-06-06T13:47:12.088604+00:00 heroku[api]:←[0m Enable Logplex by lotus123.2008@hotmail.com
←[36m2013-06-06T13:47:12.124367+00:00 heroku[api]:←[0m Release v2 created by lotus123.2008@hotmail.com
←[33m2013-06-06T13:49:04.948939+00:00 heroku[slugc]:←[0m Slug compilation started
←[36m2013-06-06T13:50:13.634734+00:00 heroku[api]:←[0m Scale to web=1 by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.265176+00:00 heroku[api]:←[0m Attach HEROKU_POSTGRESQL_PINK resource by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.311667+00:00 heroku[api]:←[0m Release v3 created by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.389500+00:00 heroku[api]:←[0m Add DATABASE_URL config by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.427605+00:00 heroku[api]:←[0m Release v4 created by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.482323+00:00 heroku[api]:←[0m Add config by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.525116+00:00 heroku[api]:←[0m Release v5 created by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.594162+00:00 heroku[api]:←[0m Deploy 6a6f8c4 by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.626530+00:00 heroku[api]:←[0m Release v6 created by lotus123.2008@hotmail.com
←[36m2013-06-06T13:50:14.673516+00:00 heroku[api]:←[0m Deploy 6a6f8c4 by lotus123.2008@hotmail.com
←[33m2013-06-06T13:50:15.246348+00:00 heroku[slugc]:←[0m Slug compilation finished
←[32m2013-06-06T13:50:17.919537+00:00 heroku[web.1]:←[0m Starting process with command `bundle exec rails server -p 25897`
←[32m2013-06-06T13:50:19.090635+00:00 heroku[web.1]:←[0m Starting process with command `bundle exec rails server -p 44971`
←[32m2013-06-06T13:50:22.122895+00:00 app[web.1]:←[0m DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be
removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the
release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environm
ent.rb:4)
←[32m2013-06-06T13:50:22.122511+00:00 app[web.1]:←[0m DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be
removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the
release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environm
ent.rb:4)
←[32m2013-06-06T13:50:24.642253+00:00 app[web.1]:←[0m => Call with -d to detach
←[32m2013-06-06T13:50:24.642253+00:00 app[web.1]:←[0m => Booting WEBrick
←[32m2013-06-06T13:50:24.642253+00:00 app[web.1]:←[0m => Rails 3.2.13 application starting in production on http://0.0.0.0:44971
←[32m2013-06-06T13:50:24.642253+00:00 app[web.1]:←[0m => Ctrl-C to shutdown server
←[32m2013-06-06T13:50:24.642253+00:00 app[web.1]:←[0m Connecting to database specified by DATABASE_URL
←[32m2013-06-06T13:50:25.465482+00:00 app[web.1]:←[0m [2013-06-06 13:50:25] INFO WEBrick 1.3.1
←[32m2013-06-06T13:50:25.469922+00:00 app[web.1]:←[0m [2013-06-06 13:50:25] INFO WEBrick::HTTPServer#start: pid=2 port=44971
←[32m2013-06-06T13:50:25.469327+00:00 app[web.1]:←[0m [2013-06-06 13:50:25] INFO ruby 1.9.2 (2011-07-09) [x86_64-linux]
←[32m2013-06-06T13:50:28.407291+00:00 heroku[web.1]:←[0m Stopping all processes with SIGTERM
←[32m2013-06-06T13:50:28.947257+00:00 app[web.1]:←[0m [2013-06-06 13:50:28] ERROR SignalException: SIGTERM
←[32m2013-06-06T13:50:28.947257+00:00 app[web.1]:←[0m /usr/local/lib/ruby/1.9.1/webrick/server.rb:90:in `select'
←[32m2013-06-06T13:50:29.804418+00:00 app[web.1]:←[0m DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be
removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the
release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environm
ent.rb:4)
←[32m2013-06-06T13:50:29.806233+00:00 app[web.1]:←[0m DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be
removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the
release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environm
ent.rb:4)
←[32m2013-06-06T13:50:38.739547+00:00 heroku[web.1]:←[0m Stopping remaining processes with SIGKILL
←[32m2013-06-06T13:50:38.739385+00:00 heroku[web.1]:←[0m Error R12 (Exit timeout) -> At least one process failed to exit within 10 seconds of SIGTERM
←[32m2013-06-06T13:50:40.615604+00:00 heroku[web.1]:←[0m Process exited with status 137
←[32m2013-06-06T13:50:43.184019+00:00 app[web.1]:←[0m => Booting WEBrick
←[32m2013-06-06T13:50:43.184019+00:00 app[web.1]:←[0m => Rails 3.2.13 application starting in production on http://0.0.0.0:25897
←[32m2013-06-06T13:50:43.184019+00:00 app[web.1]:←[0m => Call with -d to detach
←[32m2013-06-06T13:50:43.184019+00:00 app[web.1]:←[0m => Ctrl-C to shutdown server
←[32m2013-06-06T13:50:43.184019+00:00 app[web.1]:←[0m Connecting to database specified by DATABASE_URL
←[32m2013-06-06T13:50:44.564998+00:00 app[web.1]:←[0m [2013-06-06 13:50:44] INFO WEBrick 1.3.1
←[32m2013-06-06T13:50:44.565629+00:00 app[web.1]:←[0m [2013-06-06 13:50:44] INFO WEBrick::HTTPServer#start: pid=2 port=25897
←[32m2013-06-06T13:50:44.564998+00:00 app[web.1]:←[0m [2013-06-06 13:50:44] INFO ruby 1.9.2 (2011-07-09) [x86_64-linux]
←[32m2013-06-06T13:50:45.800915+00:00 heroku[web.1]:←[0m State changed from starting to up
←[36m2013-06-06T13:51:17.543035+00:00 heroku[api]:←[0m Starting process with command `bundle exec rake db:migrate` by lotus123.2008@hotmail.com
←[35m2013-06-06T13:51:20.060927+00:00 heroku[run.9222]:←[0m Awaiting client
←[35m2013-06-06T13:51:20.097882+00:00 heroku[run.9222]:←[0m Starting process with command `bundle exec rake db:migrate`
←[35m2013-06-06T13:51:20.930432+00:00 heroku[run.9222]:←[0m State changed from starting to up
←[35m2013-06-06T13:51:25.519513+00:00 heroku[run.9222]:←[0m Process exited with status 0
←[35m2013-06-06T13:51:25.529067+00:00 heroku[run.9222]:←[0m State changed from up to complete
←[32m2013-06-06T13:51:35.161228+00:00 app[web.1]:←[0m Started GET "/" for 59.92.36.151 at 2013-06-06 13:51:35 +0000
←[32m2013-06-06T13:51:35.440765+00:00 app[web.1]:←[0m Processing by HomeController#index as HTML
←[32m2013-06-06T13:51:35.849608+00:00 app[web.1]:←[0m Rendered home/index.html.erb within layouts/application (55.2ms)
←[32m2013-06-06T13:51:36.112603+00:00 app[web.1]:←[0m Completed 500 Internal Server Error in 672ms
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m 6: <%=stylesheet_link_tag "application", :media => "all" %>
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m ActionView::Template::Error (application.js isn't precompiled):
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m 4: <title>Blog</title>
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m 5:
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m 7: <%= javascript_include_tag "application" %>
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m 8: <%= javascript_include_tag "test" %>
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m 9: <%= csrf_meta_tags %>
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m app/views/layouts/application.html.erb:7:in `_app_views_layouts_application_html_erb__703185640808623364
_34573040'
←[32m2013-06-06T13:51:36.129671+00:00 app[web.1]:←[0m 10:
←[32m2013-06-06T13:51:36.129919+00:00 app[web.1]:←[0m
←[32m2013-06-06T13:51:36.129919+00:00 app[web.1]:←[0m
←[31m2013-06-06T13:51:36.132423+00:00 heroku[router]:←[0m at=info method=GET path=/ host=still-earth-6287.herokuapp.com fwd="59.92.36.151" dyno=web.1 connect=5m
s service=1084ms status=500 bytes=643
←[32m2013-06-06T14:54:09.885182+00:00 app[web.1]:←[0m Started GET "/" for 59.92.36.151 at 2013-06-06 14:54:09 +0000
←[32m2013-06-06T14:54:09.961981+00:00 app[web.1]:←[0m Processing by HomeController#index as HTML
←[32m2013-06-06T14:54:09.968827+00:00 app[web.1]:←[0m Rendered home/index.html.erb within layouts/application (4.3ms)
←[32m2013-06-06T14:54:10.016285+00:00 app[web.1]:←[0m Completed 500 Internal Server Error in 54ms
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m ActionView::Template::Error (application.js isn't precompiled):
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m 5:
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m 7: <%= javascript_include_tag "application" %>
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m 9: <%= csrf_meta_tags %>
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m 4: <title>Blog</title>
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m 6: <%=stylesheet_link_tag "application", :media => "all" %>
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m 8: <%= javascript_include_tag "test" %>
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m app/views/layouts/application.html.erb:7:in `_app_views_layouts_application_html_erb__703185640808623364
_34573040'
←[32m2013-06-06T14:54:10.053935+00:00 app[web.1]:←[0m
←[32m2013-06-06T14:54:10.053935+00:00 app[web.1]:←[0m
←[32m2013-06-06T14:54:10.053734+00:00 app[web.1]:←[0m 10:
←[31m2013-06-06T14:54:10.084893+00:00 heroku[router]:←[0m at=info method=GET path=/ host=still-earth-6287.herokuapp.com fwd="59.92.36.151" dyno=web.1 connect=7m
s service=328ms status=500 bytes=643
非常感谢您的帮助！！