title: Can travis-ci run docker?
body: <p>I am unable to run a docker container in a Travis continuous integration job.</p>
  
  <p><a href="https://travis-ci.org/buildbot/buildbot/builds/36547150">https://travis-ci.org/buildbot/buildbot/builds/36547150</a></p>
  
  <pre><code>pkg/installation_tests/testall.sh
  Segmentation Fault or Critical Error encountered. Dumping core and aborting.
  pkg/installation_tests/testall.sh: line 16:  7343 Aborted                 docker build $dir
  make: *** [docker_install_tests] Error 1
  </code></pre>
  
  <p>My guess is that there are missing kernel stuff in the travis workers, but it is difficult to tell.</p>