diff --git a/tractor/_forkserver_override.py b/tractor/_forkserver_override.py
index 07933dd..c515510 100644
--- a/tractor/_forkserver_override.py
+++ b/tractor/_forkserver_override.py
@@ -234,8 +234,8 @@ def main(listener_fd, alive_r, preload, main_path=None, sys_path=None):
                             os.close(child_w)
                         else:
                             # This shouldn't happen really
-                            warnings.warn('forkserver: waitpid returned '
-                                          'unexpected pid %d' % pid)
+                            warnings.warning('forkserver: waitpid returned '
+                                             'unexpected pid %d' % pid)
 
                 if listener in rfds:
                     # Incoming fork request
diff --git a/tractor/_trionics.py b/tractor/_trionics.py
index aecf16e..203a9dc 100644
--- a/tractor/_trionics.py
+++ b/tractor/_trionics.py
@@ -275,7 +275,7 @@ async def open_nursery() -> typing.AsyncGenerator[ActorNursery, None]:
                 # ria_nursery scope end
 
         # XXX: do we need a `trio.Cancelled` catch here as well?
-        except (Exception, trio.MultiError) as err:
+        except (Exception, trio.MultiError, trio.Cancelled) as err:
             # If actor-local error was raised while waiting on
             # ".run_in_actor()" actors then we also want to cancel all
             # remaining sub-actors (due to our lone strategy: