title: Maven jenkins build cannot remove folder target-grunt
body: <p>I have a maven project building on jenkins. </p>
  
  <p>I get the following error</p>
  
  <pre><code>Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.2:clean
  (default-clean) on project informiam-platform: Failed to delete directory:      
  /jenkins/.jenkins/workspace/project/target. Reason:
      Unable to delete directory                       
  /jenkins/.jenkins/workspace/project/target/checkout/pathTo/
  target-grunt/node_modules/grunt-contrib-uglify/node_modules/.bin -&gt; [Help 1]
  </code></pre>
  
  <p>When I log into the machine as the same user jenkin runs on I am able to manually delete the folder without any problem. </p>
  
  <p>Any help would be appreciated, even if you have a method to output exactly why it failed to delete .bin folder?</p>