Error on cap deploy

gistfile1.txt

RAILS_ENV=production be cap deploy
    triggering load callbacks
  * 2013-06-17 09:10:19 executing `production'
    triggering start callbacks for `deploy'
  * 2013-06-17 09:10:19 executing `multistage:ensure'
  * 2013-06-17 09:10:19 executing `deploy'
  * 2013-06-17 09:10:19 executing `deploy:update'
 ** transaction: start
  * 2013-06-17 09:10:19 executing `deploy:update_code'
    updating the cached checkout on all servers
    executing locally: "git ls-remote git@github.com:sethherr/bikeindex.git master"
    command finished in 897ms
  * executing "if [ -d /home/deploy/bikeindex/shared/cached-copy ]; then cd /home/deploy/bikeindex/shared/cached-copy && git fetch -q origin && git fetch --tags -q origin && git reset -q --hard 6bcce71b0c1f88a5e4898d7229ac903ee83a14cf && git clean -q -d -x -f; else git clone -q -b master git@github.com:sethherr/bikeindex.git /home/deploy/bikeindex/shared/cached-copy && cd /home/deploy/bikeindex/shared/cached-copy && git checkout -q -b deploy 6bcce71b0c1f88a5e4898d7229ac903ee83a14cf; fi"
    servers: ["your-server-here"]
*** [deploy:update_code] rolling back
  * executing "rm -rf /home/deploy/bikeindex/releases/20130617131251; true"
    servers: ["your-server-here"]