Rails 4.2：使用Heroku創建應用程序錯誤

使用Heroku創建應用程序錯誤。在開發中工作。嘗試Heroku重新啓動，但得到相同的錯誤。Rails 4.2：使用Heroku創建應用程序錯誤

heroku運行耙db：migrate給了我這個消息，我以前沒有見過。

(9.6ms) CREATE TABLE "schema_migrations" ("version" character varying NOT NULL) 
    (4.1ms) CREATE UNIQUE INDEX "unique_schema_migrations" ON "schema_migrations" ("version") 

    ActiveRecord::SchemaMigration Load (1.4ms) SELECT "schema_migrations".* FROM "schema_migrations" 

Migrating to CreatePosts (20151117140811) 

    (2.2ms) BEGIN 

== 20151117140811 CreatePosts: migrating ====================================== 

-- create_table(:posts) 

    (8.1ms) CREATE TABLE "posts" ("id" serial primary key, "title" character varying, "content" text, "created_at" timestamp NOT NULL, "updated_at" timestamp NOT NULL)

Heroku的日誌

2015-11-17T21:01:58.922113+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T21:02:01.619357+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 58664 -e production` 
2015-11-17T21:02:03.996752+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T21:02:03.996753+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T21:02:03.996757+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T21:02:03.996743+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T21:02:03.996757+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T21:02:03.996754+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T21:02:04.969978+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T21:02:04.982155+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T21:02:19.841210+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=wiki2015.herokuapp.com request_id=2daf0895-2f82-4b53-8779-d868927d174d fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
2015-11-17T21:07:52.541848+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T21:07:54.465372+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 34156 -e production` 
2015-11-17T21:07:55.963293+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T21:07:55.963309+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T21:07:55.963310+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T21:07:55.963311+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T21:07:55.963312+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T21:07:55.963312+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T21:07:56.601024+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T21:07:56.592508+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T21:08:11.237584+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T21:08:13.869504+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 51681 -e production` 
2015-11-17T21:08:16.370873+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T21:08:16.370893+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T21:08:16.370895+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T21:08:16.370896+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T21:08:16.370897+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T21:08:16.370898+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T21:08:17.375973+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T21:08:17.362848+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T21:08:19.043366+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=wiki2015.herokuapp.com request_id=056b3e11-0204-4a64-aab2-9f33928cce07 fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
Neils-MacBook-Pro-2:wiki123 neilpatel$

的Gemfile

源 'https://rubygems.org'

ruby '2.0.0' 
gem 'rails', '4.2.4' 
gem 'sqlite3', group: :development 
gem 'sass-rails', '~> 5.0' 
gem 'uglifier', '>= 1.3.0' 
gem 'coffee-rails', '~> 4.1.0' 
gem 'jquery-rails' 
gem 'turbolinks' 
gem 'jbuilder', '~> 2.0' 
gem 'sdoc', '~> 0.4.0', group: :doc 
gem 'bootstrap-sass', '~> 3.3.5' 
gem 'pygments.rb', '~> 0.6.0' 
gem 'redcarpet', '~> 3.2.2' 


gem 'rails_12factor', group: :production 
gem 'pg', group: :production 


gem 'spring',  group: :development 


group :development, :test do 
    gem 'byebug' 
    gem 'rspec-rails', '~> 3.0.1' 
end

還更新了彈簧寶石

group :development do 
    gem 'web-console', '~> 2.0' 
end 

group :test do 
    gem 'capybara', '~> 2.3.0' 
end

還更新了彈簧寶石作爲買賣本Heroku的日誌

寶石 '彈簧'， '〜「1.4'， '> = 1.4.3'，基團：發展

跑了Heroku的開放，得到以下信息

2015-11-17T20:52:47.008259+00:00 heroku[api]: Release v4 created by [email protected] 
2015-11-17T20:52:47.356212+00:00 heroku[api]: Scale to web=1 by [email protected] 
2015-11-17T20:52:47.415652+00:00 heroku[api]: Deploy a2f4d0a by [email protected] 
2015-11-17T20:52:47.415652+00:00 heroku[api]: Release v5 created by [email protected] 
2015-11-17T20:52:47.721228+00:00 heroku[slug-compiler]: Slug compilation started 
2015-11-17T20:52:47.721239+00:00 heroku[slug-compiler]: Slug compilation finished 
2015-11-17T20:52:50.084314+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 15687 -e production` 
2015-11-17T20:52:52.299661+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T20:52:52.299686+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T20:52:52.299703+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T20:52:52.299720+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T20:52:52.299736+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T20:52:52.299775+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T20:52:53.219221+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T20:52:53.217867+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T20:52:53.202791+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T20:52:55.291203+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 37936 -e production` 
2015-11-17T20:52:57.066805+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T20:52:57.066819+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T20:52:57.066821+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T20:52:57.066820+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T20:52:57.066822+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T20:52:57.066823+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T20:52:57.652025+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T20:52:57.644122+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T20:53:12.090669+00:00 heroku[api]: Starting process with command `bundle exec rake db:migrate` by [email protected] 
2015-11-17T20:53:15.086077+00:00 heroku[run.7997]: Awaiting client 
2015-11-17T20:53:15.126176+00:00 heroku[run.7997]: Starting process with command `bundle exec rake db:migrate` 
2015-11-17T20:53:15.445357+00:00 heroku[run.7997]: State changed from starting to up 
2015-11-17T20:53:20.527470+00:00 heroku[run.7997]: Process exited with status 0 
2015-11-17T20:53:20.542413+00:00 heroku[run.7997]: State changed from up to complete 
2015-11-17T20:54:06.611902+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=wiki2015.herokuapp.com request_id=91c5e397-df18-4ed2-8b38-7a99f0acd7a5 fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
2015-11-17T20:54:09.852632+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=wiki2015.herokuapp.com request_id=2aaa7177-4534-48c9-afc9-64e8ff2e8563 fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
2015-11-17T20:54:09.986585+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=wiki2015.herokuapp.com request_id=ffe1b818-0924-4989-840c-f9589c3e02c7 fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
2015-11-17T20:57:17.611886+00:00 heroku[slug-compiler]: Slug compilation started 
2015-11-17T20:57:17.611896+00:00 heroku[slug-compiler]: Slug compilation finished 
2015-11-17T20:57:17.479563+00:00 heroku[api]: Deploy 1402961 by [email protected] 
2015-11-17T20:57:17.479619+00:00 heroku[api]: Release v6 created by [email protected] 
2015-11-17T20:57:17.972832+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T20:57:20.345858+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 47455 -e production` 
2015-11-17T20:57:21.711597+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T20:57:21.711626+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T20:57:21.711627+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T20:57:21.711627+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T20:57:21.711628+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T20:57:21.711628+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T20:57:22.386419+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T20:57:22.400171+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T20:57:27.636221+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=wiki2015.herokuapp.com request_id=c82ba8c6-85de-4ac0-b407-0e70a0293016 fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
2015-11-17T21:01:58.961493+00:00 heroku[slug-compiler]: Slug compilation finished 
2015-11-17T21:01:58.961483+00:00 heroku[slug-compiler]: Slug compilation started 
2015-11-17T21:01:58.802834+00:00 heroku[api]: Release v7 created by [email protected] 
2015-11-17T21:01:58.802834+00:00 heroku[api]: Deploy f9fc5c0 by [email protected] 
2015-11-17T21:01:58.922113+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T21:02:01.619357+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 58664 -e production` 
2015-11-17T21:02:03.996752+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T21:02:03.996753+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T21:02:03.996757+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T21:02:03.996743+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T21:02:03.996757+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T21:02:03.996754+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T21:02:04.969978+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T21:02:04.982155+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T21:02:19.841210+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=wiki2015.herokuapp.com request_id=2daf0895-2f82-4b53-8779-d868927d174d fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
2015-11-17T21:07:52.541848+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T21:07:54.465372+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 34156 -e production` 
2015-11-17T21:07:55.963293+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T21:07:55.963309+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T21:07:55.963310+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T21:07:55.963311+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T21:07:55.963312+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T21:07:55.963312+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T21:07:56.601024+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T21:07:56.592508+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T21:08:11.237584+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T21:08:13.869504+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 51681 -e production` 
2015-11-17T21:08:16.370873+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T21:08:16.370893+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T21:08:16.370895+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T21:08:16.370896+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T21:08:16.370897+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T21:08:16.370898+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T21:08:17.375973+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T21:08:17.362848+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T21:08:19.043366+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=wiki2015.herokuapp.com request_id=056b3e11-0204-4a64-aab2-9f33928cce07 fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
2015-11-17T21:17:26.807218+00:00 heroku[api]: Deploy d922aba by [email protected] 
2015-11-17T21:17:26.807281+00:00 heroku[api]: Release v8 created by [email protected] 
2015-11-17T21:17:26.909902+00:00 heroku[web.1]: State changed from crashed to starting 
2015-11-17T21:17:27.222648+00:00 heroku[slug-compiler]: Slug compilation started 
2015-11-17T21:17:27.222657+00:00 heroku[slug-compiler]: Slug compilation finished 
2015-11-17T21:17:28.953132+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 37736 -e production` 
2015-11-17T21:17:31.073507+00:00 app[web.1]: /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
2015-11-17T21:17:31.073522+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
2015-11-17T21:17:31.073524+00:00 app[web.1]: from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
2015-11-17T21:17:31.073525+00:00 app[web.1]: from /app/bin/spring:12:in `<top (required)>' 
2015-11-17T21:17:31.073525+00:00 app[web.1]: from bin/rails:4:in `load' 
2015-11-17T21:17:31.073526+00:00 app[web.1]: from bin/rails:4:in `<main>' 
2015-11-17T21:17:32.008445+00:00 heroku[web.1]: Process exited with status 1 
2015-11-17T21:17:32.018017+00:00 heroku[web.1]: State changed from starting to crashed 
2015-11-17T21:18:35.592839+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=wiki2015.herokuapp.com request_id=097d7d00-533f-4b9a-b588-6cfe369b332e fwd="80.42.198.211" dyno= connect= service= status=503 bytes= 
Neils-MacBook-Pro-2:wiki123 neilpatel$

Heroku的運行耙控制檯

eils-MacBook-Pro-2:wiki123 neilpatel$ heroku run rails console 
Running rails console on wiki2015... up, run.8231 
/app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:296:in `to_specs': Could not find 'spring' (= 1.4.3) among 65 total gem(s) (Gem::LoadError) 
    from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/dependency.rb:307:in `to_spec' 
    from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in `gem' 
    from /app/bin/spring:12:in `<top (required)>' 
    from /app/bin/rails:4:in `load' 
    from /app/bin/rails:4:in `<main>' 
Neils-MacBook-Pro-2:wiki123 neilpatel$

來源

2015-11-17 Neil

您可能想從上面的日誌文件中刪除您的電子郵件地址。 – Josh

如果您運行'heroku config：get BUNDLE_WITHOUT'，輸出是什麼？ – Josh

1.Replace

gem 'spring', group: :development

通過

gem 'spring'

在你的Gemfile

。然後運行

bundle install

更新Gemfile.lock的和提交更改和代碼推到Heroku的。
它應該工作。因爲春天是在開發中分組，所以無法找到這個寶石，但是當你刪除這個組時，它將在生產模式中找到。

欲瞭解更多信息，請看https://github.com/rails/spring

來源

2015-11-18 16:05:54

這不是一個好的解決方案。從春季文檔：「你不能在你的生產環境中安裝Spring」https://github.com/rails/spring#deployment – Josh

是啊......這是不正確的。請注意，在用'rails new'生成的全新rails應用程序中，'spring' gem嵌套在'group：development'中。 – sixty4bit

是的....根據文檔不正確，但爲了快速修復，我嘗試了我的項目。 –

您正在嘗試在Heroku上啓動rails/server，並且您沒有在Heroku上安裝spring（這很好，您在Heroku上不需要它），它會拋出一個錯誤。

看起來你沒有設置Procfile，或者如果你這樣做，你正在使用rails/server而不是生產Web服務器。 Heroku recommends Puma as the webserver你也可以使用獨角獸。

按照上面的鏈接中的說明設置Puma for heroku。基本設置是創建一個Procfile和一個config/puma.rb文件。

如果您使用的是美洲獅或獨角獸，那麼您將不會使用rails/server，因此它不會嘗試加載彈簧。

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2015-11-18 09:15:07 Josh

是，沒有設置procfile。 - >沒有Procfile檢測到，使用默認web服務器（webrick）遠程：https：//devcenter.heroku.com/articles/ruby-default-web-server 遠程：----->發現進程類型遠程：Procfile聲明類型 - >（none） remote：buildpack的默認類型 - > console，rake，web，worker – Neil

Rails 4.2：使用Heroku創建應用程序錯誤

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