Improve compare-failures output for multiple [BuildUri] results

tools/gardening/test/compare_failures_test.dart

Index: tools/gardening/test/compare_failures_test.dart
diff --git a/tools/gardening/test/compare_failures_test.dart b/tools/gardening/test/compare_failures_test.dart
index d1a9355f71934bcd9445c30474653bf0e5097ff1..39f55321cd93311fd4aba7ced693ec379ea7e7d7 100644
--- a/tools/gardening/test/compare_failures_test.dart
+++ b/tools/gardening/test/compare_failures_test.dart
@@ -113,7 +113,7 @@ Future runSingleTest(BuildbotClient client, String testUri, int runCount,
       await loadBuildResults(client, [testUri], runCount: runCount);
   print('- checking results for ${buildResults.keys}');
   if (LOG) {
-    printBuildResultsSummary(buildResults);
+    printBuildResultsSummary(buildResults, [testUri]);
   }
   Expect.equals(1, buildResults.length);
   testSingleResults(expectedResult, buildResults.values.first);