hull on heroku

-----> Ruby/Rack app detected
-----> Installing dependencies using Bundler version 1.3.2
       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/..
       Fetching [email protected]:hull/hull-ruby.git
       Host key verification failed.
       fatal: The remote end hung up unexpectedly
       Git error: command `git clone '[email protected]:hull/hull-ruby.git'
       "/tmp/build_3k5zpujuyojzf/vendor/bundle/ruby/1.9.1/cache/bundler/git/hull-ruby-66c224246466df82288c5430f3bf07c3c982c569"
       --bare --no-hardlinks` in directory /tmp/build_3k5zpujuyojzf has failed.
 !
 !     Failed to install gems via Bundler.
 !
 !     Heroku push rejected, failed to compile Ruby/rack app

To [email protected]:tmb-hull.git
 ! [remote rejected] hull2 -> master (pre-receive hook declined)