Ruby Sinatra应用程序未部署到Heroku，rackup崩溃

config.ru

require './app'
run Sinatra::Application

Gemfile

source 'http://rubygems.org'

gem 'heroku'
gem 'sinatra'
gem 'thin'

web: bundle exec rackup config.ru -p $PORT

Procfile

source 'http://rubygems.org'

gem 'heroku'
gem 'sinatra'
gem 'thin'

web: bundle exec rackup config.ru -p $PORT

这是我的heroku日志

2013-08-10T01:21:03.753984+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:40:in'parse_file'
2013-08-10T01:21:03.754180+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:250:在“开始”中
2013-08-10T01:21:03.754180+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:141:in'start'
2013-08-10T01:21:03.754180+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:199:in'app'
2013-08-10T01:21:04.799863+00:00 heroku[web.1]：状态从开始更改为崩溃
2013-08-10T01:21:04.790161+00:00 heroku[web.1]：进程已退出，状态为1
2013-08-10T01:21:25.615653+00:00 heroku[路由器]：at=错误代码=H10 desc=“应用程序崩溃”方法=获取路径=/host=beer-voter.herokuapp.com fwd=“98.173.1.66”dyno=connect=service=status=503字节=
2013-08-10T01:22:57.223684+00:00 heroku[路由器]：at=错误代码=H10 desc=“应用程序崩溃”方法=获取路径=/host=beer-voter.herokuapp.com fwd=“98.173.1.66”dyno=connect=service=status=503字节=
2013-08-10T01:24:34.417907+00:00 heroku[api]：使用命令“bundle exec rake db:migrate”启动进程jgallardo720@gmail.com
2013-08-10T01:24:39.051510+00:00 heroku[run.1200]：等待客户
2013-08-10T01:24:39.073013+00:00 heroku[run.1200]：使用命令“bundle exec rake db:migrate”启动进程`
2013-08-10T01:24:41.746057+00:00 heroku[run.1200]：状态从启动更改为启动
2013-08-10T01:24:46.002914+00:00 heroku[run.1200]：进程已退出，状态为1
2013-08-10T01:24:46.018585+00:00 heroku[run.1200]：状态从up更改为complete
2013-08-10T01:26:31.150052+00:00 heroku[路由器]：at=错误代码=H10 desc=“应用程序崩溃”方法=获取路径=/host=beer-voter.herokuapp.com fwd=“98.173.1.66”dyno=connect=service=status=503字节=
2013-08-10T01:29:07.598813+00:00 heroku[web.1]：状态从崩溃变为启动
2013-08-10T01:29:11.616194+00:00 heroku[web.1]：使用命令“bundle exec rackup config.ru-p 26270”启动进程`
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：/app/config.ru:1:在'require'中：无法加载此类文件--./app（LoadError）
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/config.ru:1:in'block in'
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in'instance\u eval'
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/config.ru:在“new”中
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/config.ru:in`'
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:40:在“解析”文件中
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:277:内置应用程序和配置中的选项
2013-08-10T01:29:15.827320+00:00应用程序[网站1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in'initialize'
2013-08-10T01:29:15.827320+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:49:in'eval'
2013-08-10T01:29:15.827512+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:199:in'app'
2013-08-10T01:29:15.827512+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:314:in'wrapp'
2013-08-10T01:29:15.827512+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:250:在“开始”中
2013-08-10T01:29:15.827512+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:141:in'start'
2013-08-10T01:29:15.827512+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/bin/rackup:23:in'load'
2013-08-10T01:29:15.827512+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/bin/rackup:4:in`'
2013-08-10T01:29:15.827799+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/bin/rackup:23:in`'
2013-08-10T01:29:17.475127+00:00 heroku[web.1]：状态从开始更改为崩溃
2013-08-10T01:29:17.455240+00:00 heroku[web.1]：进程已退出，状态为1
2013-08-10T01:39:12.643653+00:00 heroku[web.1]：状态从崩溃变为启动
2013-08-10T01:39:15.630798+00:00 heroku[web.1]：使用命令“bundle exec rackup config.ru-p 26323”启动进程`
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/config.ru:1:in'block in'
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in'instance_eval'
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in'initialize'
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/config.ru:在“new”中
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/config.ru:in`'
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：/app/config.ru:1:在'require'中：无法加载此类文件--./app（LoadError）
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:49:in'eval'
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:49:in'new_from_string'
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:40:in'parse_file'
2013-08-10T01:39:17.108286+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:277:in'build_app_和_options_from_config'
2013-08-10T01:39:17.108500+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb