デプロイ後のレールのクラッシュに関する私の質問。私の展開はうまくいきます。で標準的なRailsアプリを作成しましたrails new myapp --database=postgresql。次に、変更をコミットし、heroku にプッシュします。それは私に言います：
git push
Fetching repository, done.
Counting objects: 25, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (18/18), done.
Writing objects: 100% (18/18), 1.94 KiB | 0 bytes/s, done.
Total 18 (delta 14), reused 0 (delta 0)
-----> Ruby app detected
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.0.0
-----> Installing dependencies using Bundler version 1.3.2
Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin --deployment
Using rake (10.1.0)
Using i18n (0.6.9)
Using minitest (4.7.5)
Using multi_json (1.8.2)
Using atomic (1.1.14)
Using thread_safe (0.1.3)
Using tzinfo (0.3.38)
Using activesupport (4.0.2)
Using builder (3.1.4)
Using erubis (2.7.0)
Using rack (1.5.2)
Using rack-test (0.6.2)
Using actionpack (4.0.2)
Using mime-types (1.25.1)
Using polyglot (0.3.3)
Using treetop (1.4.15)
Using mail (2.5.4)
Using actionmailer (4.0.2)
Using activemodel (4.0.2)
Using activerecord-deprecated_finders (1.0.3)
Using arel (4.0.1)
Using activerecord (4.0.2)
Using coffee-script-source (1.6.3)
Using execjs (2.0.2)
Using coffee-script (2.2.0)
Using thor (0.18.1)
Using railties (4.0.2)
Using coffee-rails (4.0.1)
Using hike (1.2.3)
Using jbuilder (1.5.3)
Using jquery-rails (3.0.4)
Using json (1.8.1)
Using pg (0.17.0)
Using bundler (1.3.2)
Using tilt (1.4.1)
Using sprockets (2.10.1)
Using sprockets-rails (2.0.1)
Using rails (4.0.2)
Using rdoc (3.12.2)
Using sass (3.2.12)
Using sass-rails (4.0.1)
Using sdoc (0.3.20)
Using turbolinks (2.0.0)
Using uglifier (2.3.3)
Your bundle is complete! It was installed into ./vendor/bundle
Bundle completed (0.46s)
Cleaning up the bundler cache.
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
Running: rake assets:precompile
Asset precompilation completed (1.92s)
Cleaning assets
-----> WARNINGS:
Include 'rails_12factor' gem to enable all platform features
See https://devcenter.heroku.com/articles/rails-integration-gems for more information.
You have not declared a Ruby version in your Gemfile.
To set your Ruby version add this line to your Gemfile:
ruby '2.0.0'
# See https://devcenter.heroku.com/articles/ruby-versions for more information.
-----> Discovering process types
Procfile declares types -> (none)
Default types for Ruby -> console, rake, web, worker
-----> Compressing... done, 21.3MB
-----> Launching... done, v10
http://communityshare-web.herokuapp.com deployed to Heroku
To git@heroku.com:communityshare-web.git
1488048..2268228 master -> master
すべてがうまくいったように見えますが、heroku アプリにアクセスするとエラー ページが表示されます。
を実行するheroku logsと、次のように表示されます。
2013-12-12T21:56:18.114338+00:00 heroku[web.1]: State changed from crashed to starting
2013-12-12T21:56:25.558687+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 6442 -e $RAILS_ENV`
2013-12-12T21:56:26.741673+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.1/lib/active_support/inflector/methods.rb:3:in `<top (required)>'
2013-12-12T21:56:26.741673+00:00 app[web.1]: /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.1/lib/active_support/inflector/inflections.rb:1:in `require': cannot load such file -- thread_safe (LoadError)
2013-12-12T21:56:26.741673+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.1/lib/active_support/inflector/inflections.rb:1:in `<top (required)>'
2013-12-12T21:56:26.741673+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.1/lib/active_support/inflector/methods.rb:3:in `require'
2013-12-12T21:56:26.741673+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.1/lib/active_support/dependencies/autoload.rb:1:in `require'