log exc type

modal/_asgi.py

@@ -350,6 +350,8 @@ async def web_server_proxy_app(scope, receive, send):
 
         try:
             if scope["type"] == "lifespan":
+                print("lifespan is not implemented")
+                raise NotImplementedError("lifespan is not implemented")
                 pass  # Do nothing for lifespan events.
             elif scope["type"] == "http":
                 await _proxy_http_request(session, scope, receive, send)

modal/_container_io_manager.py

@@ -297,7 +297,7 @@ def _init(self, container_args: api_pb2.ContainerArguments, client: _Client):
         self._fetching_inputs = True
 
         self._client = client
-        # assert isinstance(self._client, _Client)
+        assert isinstance(self._client, _Client)
 
     def __new__(cls, container_args: api_pb2.ContainerArguments, client: _Client) -> "_ContainerIOManager":
         cls._singleton = super().__new__(cls)
@@ -672,7 +672,9 @@ def serialize_exception(self, exc: BaseException) -> bytes:
             return self.serialize(exc)
         except Exception as serialization_exc:
             # We can't always serialize exceptions.
-            return self.serialize(SerializationError(f"Failed to serialize exception {exc}: {serialization_exc}"))
+            err = f"Failed to serialize exception {exc} of type {type(exc)}: {serialization_exc}"
+            logger.info(err)
+            return self.serialize(SerializationError(err))
 
     def serialize_traceback(self, exc: BaseException) -> Tuple[Optional[bytes], Optional[bytes]]:
         serialized_tb, tb_line_cache = None, None