--- a/tests/test-obsolete-rebase.t	Tue Jun 19 18:02:34 2012 +0200
+++ b/tests/test-obsolete-rebase.t	Tue Jun 19 14:02:12 2012 +0200
@@ -28,6 +28,10 @@
   $ hg ci -Am addb
   adding b
   created new head
+  $ hg rebase -d 1 --keep  
+  abort: rebase --keep option is unsupported with obsolete extension
+  (see 'hg help obsolete')
+  [255]
   $ hg rebase -d 1
   $ glog --hidden
   @  3:03f017c74faa@default(draft) addb