ln -f does not like being run in parallel.  Since this is optional, make it so.

BUG=None
TEST=Tested lines on my own on non || case.

Change-Id: I73d86547626962b7599590baa42b229cf5bcea72
Reviewed-on: http://gerrit.chromium.org/gerrit/4935
Tested-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Puneet Kumar <puneetster@chromium.org>
diff --git a/run_remote_tests.sh b/run_remote_tests.sh
index 1ae1331..7489748 100755
--- a/run_remote_tests.sh
+++ b/run_remote_tests.sh
@@ -61,7 +61,8 @@
      [[ ${RAN_ANY_TESTS} -eq ${FLAGS_FALSE} ]]; then
     rm -rf "${TMP}"
   else
-    ln -nsf "${TMP}" /tmp/run_remote_tests.latest
+    ln -nsf "${TMP}" /tmp/run_remote_tests.latest ||
+        warn "Could not link latest test directory."
     echo ">>> Details stored under ${TMP}"
   fi
   stop_ssh_agent