diff -r 113cdce4663c Lib/concurrent/futures/_base.py
--- a/Lib/concurrent/futures/_base.py	Wed Jun 06 01:37:37 2012 +0200
+++ b/Lib/concurrent/futures/_base.py	Wed Jun 06 11:02:04 2012 +0200
@@ -470,8 +470,8 @@
                 return True
             else:
                 LOGGER.critical('Future %s in unexpected state: %s',
-                                id(self.future),
-                                self.future._state)
+                                id(self),
+                                self._state)
                 raise RuntimeError('Future in unexpected state')
 
     def set_result(self, result):