--- env.sh.orig 2014-11-20 14:08:02.000000000 +0000
+++ env.sh      2014-11-20 14:08:19.000000000 +0000
@@ -166,7 +166,7 @@
             echoerr "su doesn't appear to be installed and your EUID isn't $RUNNER_USER" 1>&2
             exit 1
         fi
-       exec su - $RUNNER_USER -c "$RUNNER_SCRIPT_DIR/$RUNNER_SCRIPT $@"
+       exec su - $RUNNER_USER $RUNNER_SCRIPT_DIR/$RUNNER_SCRIPT $@
     fi
 }