--- a/hgext/factotum.py	Mon May 05 13:42:08 2014 -0500
+++ b/hgext/factotum.py	Fri May 02 18:24:10 2014 +0900
@@ -52,6 +52,8 @@
 
 ERRMAX = 128
 
+_executable = _mountpoint = _service = None
+
 def auth_getkey(self, params):
     if not self.ui.interactive():
         raise util.Abort(_('factotum not interactive'))