Linuxにデプロイしようとしてエラー

gistfile1.txt

macmini:myapp tyamuro$ cap deploy
    triggering load callbacks
  * 2012-11-13 17:39:33 executing `staging'
    triggering start callbacks for `deploy'
  * 2012-11-13 17:39:33 executing `multistage:ensure'
  * 2012-11-13 17:39:33 executing `deploy'
  * 2012-11-13 17:39:33 executing `deploy:update'
 ** transaction: start
  * 2012-11-13 17:39:33 executing `deploy:update_code'
    executing locally: "git ls-remote git@github.com:tyamuro/myapp.git HEAD"
    command finished in 5860ms
  * executing "git clone -q git@github.com:tyamuro/myapp.git /home/tyamuro/ac_staging/releases/20121113083939 && cd /home/tyamuro/ac_staging/releases/20121113083939 && git checkout -q -b deploy 53a1068d4f2a521c9d84d53fd7a756f99ce4eda1 && (echo 53a1068d4f2a521c9d84d53fd7a756f99ce4eda1 > /home/tyamuro/ac_staging/releases/20121113083939/REVISION)"
    servers: ["192.168.1.10"]
Password:
    [192.168.1.10] executing command
 ** [192.168.1.10 :: err] fatal: could not create work tree dir '/home/tyamuro/ac_staging/releases/20121113083939'.: Permission denied
    command finished in 421ms
*** [deploy:update_code] rolling back
  * executing "rm -rf /home/tyamuro/ac_staging/releases/20121113083939; true"
    servers: ["192.168.1.10"]
    [192.168.1.10] executing command
    command finished in 12ms
failed: "sh -c 'git clone -q git@github.com:tyamuro/myapp.git /home/tyamuro/ac_staging/releases/20121113083939 && cd /home/tyamuro/ac_staging/releases/20121113083939 && git checkout -q -b deploy 53a1068d4f2a521c9d84d53fd7a756f99ce4eda1 && (echo 53a1068d4f2a521c9d84d53fd7a756f99ce4eda1 > /home/tyamuro/ac_staging/releases/20121113083939/REVISION)'" on 192.168.1.10