replacing method to add elements to array files

from "<< " to "push"

resources/milestone-5.xml

@@ -12,15 +12,11 @@
 <builders>
 <hudson.tasks.Shell>
 <command>#!/bin/bash -e
-
-#!/bin/bash -e
-
 echo "Setting up..."
 touch /tmp/1
 echo "Running build..."
 echo "Open files 1500 times..."
-ruby -e 'files = []; for i in 0..1500; files << File.open("/tmp/1"); end'
-
+ruby -e 'files = []; for i in 0..1500; files.push(File.open("/tmp/1")); end'
 </command>
 </hudson.tasks.Shell>
 </builders>