Try to handle variable windows errors

tests/test_cancellation.py

@@ -365,7 +365,8 @@ async def test_nested_multierrors(loglevel, start_method):
                     # to happen before an actor is spawned
                     if isinstance(subexc, trio.Cancelled):
                         continue
-                    else:
+
+                    elif isinstance(subexc, tractor.RemoteActorError):
                         # on windows it seems we can't exactly be sure wtf
                         # will happen..
                         assert subexc.type in (
@@ -373,6 +374,14 @@ async def test_nested_multierrors(loglevel, start_method):
                             trio.Cancelled,
                             trio.MultiError
                         )
+
+                    elif isinstance(subexc, trio.MultiError):
+                        for subsub in subexc.exceptions:
+                            assert subsub.type in (
+                                tractor.RemoteActorError,
+                                trio.Cancelled,
+                                trio.MultiError
+                            )
                 else:
                     assert isinstance(subexc, tractor.RemoteActorError)
 
@@ -448,6 +457,7 @@ def test_cancel_via_SIGINT_other_task(
     with pytest.raises(KeyboardInterrupt):
         trio.run(main)
 
+
 async def spin_for(period=3):
     "Sync sleep."
     time.sleep(period)