Safely handle not being able to push; if we've made it this far, it should pass anyway.

templates/merger.xml

@@ -55,7 +55,7 @@ cd {{ NAME }}
 git checkout {{ DEFAULT_BRANCH }}
 git checkout -b {{ PACKAGING_BRANCH }} || git checkout {{ PACKAGING_BRANCH }}
 git merge --ff-only {{ DEFAULT_BRANCH }}
-git push --set-upstream origin {{ PACKAGING_BRANCH }}
+git push --set-upstream origin {{ PACKAGING_BRANCH }} || echo "cannot push"
       </command>
     </hudson.tasks.Shell>
   </builders>