Heroku Bundle Error

Question

So heroku has trouble bundling my app when using the command:

$ git push heroku master

It is no problem when I bundle locally

$ bundle update

And I have made commits and added Gemfile and Gemfile.lock Any idea why I get this error?

$ git push heroku master
Counting objects: 25, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (22/22), done.
Writing objects: 100% (22/22), 2.65 KiB, done.
Total 22 (delta 16), reused 0 (delta 0)

-----> Removing .DS_Store files
-----> Ruby/Rails app detected
-----> Using Ruby version: ruby-1.9.3
-----> Installing dependencies using Bundler version 1.3.0.pre.5
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin
       Fetching gem metadata from https://rubygems.org/.......
       Fetching gem metadata from https://rubygems.org/..
/app/slug-compiler/lib/utils.rb:66:in `block (2 levels) in spawn': command='/app/slug-compiler/lib/../../tmp/buildpacks/ruby/bin/compile /tmp/build_2c5mcld95eb34 /app/tmp/repo.git/.cache' exit_status=0 out='' at=timeout elapsed=900.1125066280365 (Utils::TimeoutError)
    from /app/slug-compiler/lib/utils.rb:52:in `loop'
    from /app/slug-compiler/lib/utils.rb:52:in `block in spawn'
    from /app/slug-compiler/lib/utils.rb:47:in `popen'
    from /app/slug-compiler/lib/utils.rb:47:in `spawn'
    from /app/slug-compiler/lib/buildpack.rb:37:in `block in compile'
    from /app/slug-compiler/lib/buildpack.rb:35:in `fork'
    from /app/slug-compiler/lib/buildpack.rb:35:in `compile'
    from /app/slug-compiler/lib/slug.rb:497:in `block in run_buildpack'
    from /app/slug-compiler/lib/utils.rb:121:in `log'
    from /app/slug-compiler/lib/slug.rb:748:in `log'
    from /app/slug-compiler/lib/slug.rb:496:in `run_buildpack'
    from /app/slug-compiler/lib/slug.rb:125:in `block (2 levels) in compile'
    from /app/slug-compiler/lib/utils.rb:102:in `block in timeout'
    from /usr/local/lib/ruby/1.9.1/timeout.rb:58:in `timeout'
    from /app/slug-compiler/lib/utils.rb:102:in `rescue in timeout'
    from /app/slug-compiler/lib/utils.rb:97:in `timeout'
    from /app/slug-compiler/lib/slug.rb:114:in `block in compile'
    from /app/slug-compiler/lib/utils.rb:121:in `log'
    from /app/slug-compiler/lib/slug.rb:748:in `log'
    from /app/slug-compiler/lib/slug.rb:113:in `compile'
    from /app/slug-compiler/bin/slugc:85:in `block in <main>'
    from /app/slug-compiler/lib/slug.rb:505:in `block in lock'
    from /app/slug-compiler/lib/repo_lock.rb:44:in `call'
    from /app/slug-compiler/lib/repo_lock.rb:44:in `run'
    from /app/slug-compiler/lib/slug.rb:505:in `lock'
    from /app/slug-compiler/bin/slugc:66:in `<main>'
 !     Heroku push rejected, failed to compile Ruby/rails app

To git@heroku.com:app_name.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:app_name.git'

This is my gem file:

source 'https://rubygems.org'
ruby '1.9.3'    

gem 'rails'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
      gem 'less-rails-bootstrap'
      gem 'less-rails'
      gem 'less'
      gem 'therubyracer'
      gem 'jquery-ui-rails' 
      gem 'sass-rails',   '~> 3.2.3'
      gem 'coffee-rails', '~> 3.2.1'
      gem 'uglifier', '>= 1.0.3'
end

group :development, :test do
      gem 'rspec-rails'
      gem 'factory_girl_rails'
      gem 'sqlite3'
end

group :test do
      gem "email_spec"
      gem 'faker'
      gem 'capybara'
      gem 'guard-rspec'
      gem 'launchy'
end

# Allow æ,ø,å in strings
gem 'magic_encoding'

# Files uploading gem
gem 'carrierwave'

# Spreadsheet parser gem
gem 'roo'

# Calendar Event Export
gem 'icalendar'

# Authentication gems
gem 'devise'
gem 'devise_invitable'
gem "cancan"

# Calendar features
gem 'event-calendar', :require => 'event_calendar'
gem 'bootstrap-sass'
gem 'nested_form'
gem 'ransack'
gem 'bootstrap-datepicker-rails'
gem 'jquery-rails' 

Any tips on how to solve this error will be much appreciated.

Answer 1

The production group is missing in your gemfile:

 group :production do
   gem 'pg'
 end

Heroku does not support sqlite, so you can include the obove in your gemfile.
However, I recommend you to use postgresql (pg) for development as well. It will avoid keep running into incompatibilities in your app.

EDIT - you should also specify the rails version (gem 'rails 3.2.11') and you can remove the ruby line (ruby '1.9.3').

Answer 2

If you have another working rails project on heroku try to copy the gemset or simply the Gemfile to your current project and add project specific gems in that Gemfile and try to get it working that way. Hope you get it solved