From c01d2f8aea7eb5769f15517ab2b2bc0b7bd3c30d Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Sun, 10 Oct 2021 16:46:29 -0400
Subject: [PATCH] Don't double request a cancelled actor

---
 tractor/_supervise.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tractor/_supervise.py b/tractor/_supervise.py
index 4b9f733..1d6b85d 100644
--- a/tractor/_supervise.py
+++ b/tractor/_supervise.py
@@ -198,7 +198,8 @@ class ActorNursery:
         # one-cancels-all strat
         async with trio.open_nursery() as cancel_sender:
             for subactor, proc, portal in childs.values():
-                cancel_sender.start_soon(portal.cancel_actor)
+                if proc.poll() is None and not portal.cancel_called:
+                    cancel_sender.start_soon(portal.cancel_actor)
 
         # cancel all spawner tasks
         # self._spawn_n.cancel_scope.cancel()
@@ -298,7 +299,6 @@ async def _open_and_supervise_one_cancels_all_nursery(
             #   same as a user code failure.
 
             except BaseException as err:
-                print('ERROR')
                 # anursery._join_procs.set()
                 src_err = err