Call cancel timers on the way out of the main greenlet_body, since that timer can't possibly resume the greenlet since it's going to be dead once that function returns.

eventlet/greenlib.py

@@ -265,6 +265,7 @@ def greenlet_body(value, exc):
 
     Greenlets using this body must be greenlib.switch()'ed to
     """
+    from eventlet import api
     if exc is not None:
         if isinstance(exc, tuple):
             raise exc[0], exc[1], exc[2]
@@ -282,12 +283,14 @@ def greenlet_body(value, exc):
     except AttributeError:
         greenlet_id = 1
         _threadlocal.next_greenlet_id = itertools.count(2)
-    greenlets[greenlet.getcurrent()] = {'greenlet_id': greenlet_id}
+    cur = greenlet.getcurrent()
+    greenlets[cur] = {'greenlet_id': greenlet_id}
     try:
         return cb(*args)
     finally:
         _greenlet_context_call('finalize')
-        greenlets.pop(greenlet.getcurrent(), None)
+        greenlets.pop(cur, None)
+        api.get_hub().cancel_timers(cur, quiet=True)
 
 
 class SwitchingToDeadGreenlet(RuntimeError):

eventlet/hubs/hub.py

@@ -283,7 +283,7 @@ class BaseHub(object):
                     pass
         del t[:last]
 
-    def cancel_timers(self, greenlet):
+    def cancel_timers(self, greenlet, quiet=False):
         if greenlet not in self.timers_by_greenlet:
             return
         for timer in self.timers_by_greenlet[greenlet]:
@@ -292,6 +292,6 @@ class BaseHub(object):
                 ## actually eventlet's silly way of specifying whether
                 ## a coroutine is "ready to run" or not.
                 timer.cancel()
-                if _g_debug:
+                if _g_debug and not quiet:
                     print 'Hub cancelling left-over timer %s' % timer
         del self.timers_by_greenlet[greenlet]