-----> Ruby/Rack app detected
-----> Using Ruby version: ruby-1.9.3
-----> Installing dependencies using Bundler version 1.3.0.pre.2
       Running: bundle install --without development:test --path vendor/bundle --binstubs bin/
       Fetching gem metadata from http://rubygems.org/.........
       Fetching gem metadata from http://rubygems.org/..
^[[C^[[D^[[D/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_22uiq5k0q45sp /app/tmp/repo.git/.cache' exit_status=0 out='' at=timeout elapsed=900.1076555252075 (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 '
    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 `'
 !     Heroku push rejected, failed to compile Ruby/rack app

Вот мой Gemfile:

source :rubygems
ruby '1.9.3'
gem 'sinatra', '1.3.3'
gem 'sinatra-contrib', '1.3.2'
gem 'thin', '1.5.0'
gem 'haml', '3.1.6'
gem 'bcrypt-ruby', '3.0.1'
gem 'mongo', '1.8.0'
gem 'bson_ext', '1.8.0'
gem 'mongoid', '3.0.16'
gem 'sinatra-flash', '0.3.0'
gem 'braintree', '2.22.0'
gem 'faye', '0.8.6'
#gem 'pony'

Ошибка исчезла, когда я меняю

gem 'braintree', '2.22.0'

Toi»

gem 'braintree'