--- a/tests/hghave	Fri Dec 21 17:19:52 2012 +0100
+++ b/tests/hghave	Mon Jan 07 02:00:43 2013 +0100
@@ -59,7 +59,7 @@
 
         if feature not in checks:
             error('skipped: unknown feature: ' + feature)
-            continue
+            sys.exit(2)
 
         check, desc = checks[feature]
         try: