I'm want to push a tutorial app to Heroku. I'm running with an error.

gistfile1.txt

guinslym@ubuntu:~/Documents/programming/rails_book/rails_beginner_3/bookmarks$ git push heroku master
The authenticity of host 'heroku.com (50.19.85.132)' can't be established.
RSA key fingerprint is 8b:48:5e:67:[remove by me for protection]:ad.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'heroku.com,50.19.85.132' (RSA) to the list of known hosts.
Initializing repository, done.
Counting objects: 89, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (77/77), done.
Writing objects: 100% (89/89), 75.31 KiB, done.
Total 89 (delta 6), 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
       New app detected loading default bundler cache
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin --deployment
       Fetching gem metadata from https://rubygems.org/..........
       Fetching gem metadata from https://rubygems.org/..
       Installing rake (10.1.1)
       Installing i18n (0.6.9)
       Using multi_json (1.8.2)
       Installing activesupport (3.2.16)
       Using builder (3.0.4)
       Installing activemodel (3.2.16)
       Using erubis (2.7.0)
       Using journey (1.0.4)
       Using rack (1.4.5)
       Using rack-cache (1.2)
       Using rack-test (0.6.2)
       Using hike (1.2.3)
       Using tilt (1.4.1)
       Using sprockets (2.2.2)
       Installing actionpack (3.2.16)
       Installing mime-types (1.25.1)
       Using polyglot (0.3.3)
       Using treetop (1.4.15)
       Using mail (2.5.4)
       Installing actionmailer (3.2.16)
       Installing arel (3.0.3)
       Using tzinfo (0.3.38)
       Installing activerecord (3.2.16)
       Installing activeresource (3.2.16)
       Using json (1.8.1)
       Installing carrierwave (0.9.0)
       Using coffee-script-source (1.6.3)
       Using execjs (2.0.2)
       Using coffee-script (2.2.0)
       Using rack-ssl (1.3.3)
       Using rdoc (3.12.2)
       Using thor (0.18.1)
       Installing railties (3.2.16)
       Using coffee-rails (3.2.2)
       Installing daemons (1.1.9)
       Installing eventmachine (1.0.3)
       Installing font-awesome-rails (4.0.3.1)
       Using jquery-rails (3.0.4)
       Installing subexec (0.2.3)
       Installing mini_magick (3.7.0)
       Installing pg (0.17.1)
       Using bundler (1.3.2)
       Installing rails (3.2.16)
       Installing rails_serve_static_assets (0.0.2)
       Using rails_stdout_logging (0.0.3)
       Using rails_12factor (0.0.2)
       Installing sass (3.2.13)
       Using sass-rails (3.2.6)
       Installing thin (1.6.1)
       Installing uglifier (2.4.0)
       Your bundle is complete! It was installed into ./vendor/bundle
       Bundle completed (53.97s)
       Cleaning up the bundler cache.
       Removing railties (3.2.14)
       Removing pg (0.17.0)
       Removing jbuilder (1.5.2)
       Removing uglifier (2.2.1)
       Removing railties (4.0.1)
       Removing rack (1.5.2)
       Removing activerecord (4.0.1)
       Removing turbolinks (1.3.1)
       Removing actionmailer (3.2.14)
       Removing mime-types (1.25)
       Removing minitest (4.7.5)
       Removing tzinfo (0.3.37)
       Removing rails_serve_static_assets (0.0.1)
       Removing mini_portile (0.5.1)
       Removing thread_safe (0.1.3)
       Removing kgio (2.8.1)
       Removing activeresource (3.2.14)
       Removing jbuilder (1.5.1)
       Removing uglifier (2.3.1)
       Removing i18n (0.6.5)
       Removing bcrypt-ruby (3.1.2)
       Removing coffee-rails (4.0.1)
       Removing rails (3.2.14)
       Removing json (1.8.0)
       Removing sass (3.2.12)
       Removing sprockets (2.10.0)
       Removing sprockets-rails (2.0.1)
       Removing activemodel (4.0.1)
       Removing nokogiri (1.6.0)
       Removing bcrypt-ruby (3.0.1)
       Removing builder (3.1.4)
       Removing activerecord (3.2.14)
       Removing sass-rails (4.0.1)
       Removing activerecord-deprecated_finders (1.0.3)
       Removing puma (2.6.0)
       Removing multi_json (1.8.0)
       Removing arel (4.0.1)
       Removing rails (4.0.1)
       Removing actionpack (4.0.1)
       Removing activemodel (3.2.14)
       Removing actionpack (3.2.14)
       Removing execjs (2.0.1)
       Removing unicorn (4.6.3)
       Removing rails_stdout_logging (0.0.2)
       Removing activesupport (4.0.1)
       Removing raindrops (0.12.0)
       Removing sdoc (0.3.20)
       Removing arel (3.0.2)
       Removing actionmailer (4.0.1)
       Removing atomic (1.1.14)
       Removing sass (3.2.10)
       Removing activesupport (3.2.14)
       Removing rake (10.1.0)
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       Running: rake assets:precompile
       Connecting to database specified by DATABASE_URL
       rake aborted!
       could not connect to server: Connection refused
       Is the server running on host "127.0.0.1" and accepting
       TCP/IP connections on port 5432?
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/postgresql_adapter.rb:1222:in `initialize'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/postgresql_adapter.rb:1222:in `new'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/postgresql_adapter.rb:1222:in `connect'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/postgresql_adapter.rb:324:in `initialize'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `new'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `postgresql_connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:315:in `new_connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:325:in `checkout_new_connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:247:in `block (2 levels) in checkout'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `loop'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `block in checkout'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:239:in `checkout'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:102:in `block in connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in `connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in `retrieve_connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_specification.rb:171:in `retrieve_connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/connection_adapters/abstract/connection_specification.rb:145:in `connection'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/model_schema.rb:310:in `clear_cache!'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activerecord-3.2.16/lib/active_record/railtie.rb:103:in `block (2 levels) in <class:Railtie>'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/callbacks.rb:418:in `_run__2495847151082341159__prepare__509354771676775218__callbacks'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/callbacks.rb:405:in `__run_callback'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/callbacks.rb:385:in `_run_prepare_callbacks'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/callbacks.rb:81:in `run_callbacks'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.16/lib/action_dispatch/middleware/reloader.rb:74:in `prepare!'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.16/lib/action_dispatch/middleware/reloader.rb:48:in `prepare!'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/application/finisher.rb:47:in `block in <module:Finisher>'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/initializable.rb:30:in `instance_exec'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/initializable.rb:30:in `run'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/initializable.rb:55:in `block in run_initializers'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/initializable.rb:54:in `each'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/initializable.rb:54:in `run_initializers'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/application.rb:136:in `initialize!'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/railtie/configurable.rb:30:in `method_missing'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/config/environment.rb:5:in `<top (required)>'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/dependencies.rb:251:in `require'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/dependencies.rb:251:in `block in require'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/dependencies.rb:236:in `load_dependency'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.16/lib/active_support/dependencies.rb:251:in `require'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/application.rb:103:in `require_environment!'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/application.rb:305:in `block (2 levels) in initialize_tasks'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.16/lib/sprockets/assets.rake:93:in `block (2 levels) in <top (required)>'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.16/lib/sprockets/assets.rake:60:in `block (3 levels) in <top (required)>'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.16/lib/sprockets/assets.rake:23:in `invoke_or_reboot_rake_task'
       /tmp/build_dd3be327-a131-42cb-b3bd-41d6d8b72ef9/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.16/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'
       Tasks: TOP => environment
       (See full trace by running task with --trace)
 !
 !     Precompiling assets failed.
 !

 !     Push rejected, failed to compile Ruby app

To [email protected]:arcane-anchorage-5887.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to '[email protected]:arcane-anchorage-5887.git'