Update all tests

tests/corelib/hidden_library2_test.dart

Index: tests/corelib/hidden_library2_test.dart
diff --git a/tests/corelib/hidden_library2_test.dart b/tests/corelib/hidden_library2_test.dart
index 277ed54383b5fb7a044fbafbe7219a89c0ce7a32..af742b84435ef6b66dfeabc2ac31ff9b019daff0 100644
--- a/tests/corelib/hidden_library2_test.dart
+++ b/tests/corelib/hidden_library2_test.dart
@@ -9,7 +9,7 @@ main() {
   print(['x'].where((_) {
     // We actually don't really care for the successful case. We just want to
     // make sure that the test doesn't crash when it is negative.
-    throw 'fisk';  /// 01: runtime error
+    throw 'fisk';  //# 01: runtime error
     return true;
   }).toList());
 }