title: .composer is full ? No space left on device
body: <p>When I deploy my project with capistrano (for Symfony), I have this error :</p>
  
  <pre><code>INFO [72050b7f] Running /usr/bin/env composer install --no-dev --prefer-dist --no-interaction --quiet --optimize-autoloader as dome@XX.XXX.XXX.XXX
  DEBUG [72050b7f] Command: cd /var/www/dev/Dome/releases/20160812073355 &amp;&amp; ( export SYMFONY_ENV="prod" ; /usr/bin/env composer install --no-dev --prefer-dist --no-interaction --quiet --optimize-autoloader )
  DEBUG [72050b7f]    The disk hosting /var/www/.composer is full, this may be the cause of the following exception
  DEBUG [72050b7f]
  DEBUG [72050b7f]
  [ErrorException]
  ZipArchive::extractTo(): No space left on device
  </code></pre>
  
  <p>Can you help me ?</p>