--- a/mercurial/obsolete.py	Tue Oct 14 13:26:01 2014 -0700
+++ b/mercurial/obsolete.py	Tue Oct 14 13:27:00 2014 -0700
@@ -1165,4 +1165,10 @@
     if len(result) == 0 and _enabled:
         return True
 
+    # createmarkers must be enabled if other options are enabled
+    if ((allowunstableopt in result or exchangeopt in result) and
+        not createmarkersopt in result):
+        raise util.Abort(_("'createmarkers' obsolete option must be enabled "
+                           "if other obsolete options are enabled"))
+
     return option in result