use debug_warn for parse_incoming_pdu err results.

Signed-off-by: Jason Volk <jason@zemos.net>

src/api/server_server.rs

@@ -244,7 +244,7 @@ pub(crate) async fn send_transaction_message_route(
 		parsed_pdus.push(match parse_incoming_pdu(pdu) {
 			Ok(t) => t,
 			Err(e) => {
-				warn!("Could not parse PDU: {e}");
+				debug_warn!("Could not parse PDU: {e}");
 				continue;
 			},
 		});

src/service/rooms/event_handler/parse_incoming_pdu.rs

@@ -6,7 +6,7 @@ use crate::{service::pdu::gen_event_id_canonical_json, services, Error, Result};
 
 pub fn parse_incoming_pdu(pdu: &RawJsonValue) -> Result<(OwnedEventId, CanonicalJsonObject, OwnedRoomId)> {
 	let value: CanonicalJsonObject = serde_json::from_str(pdu.get()).map_err(|e| {
-		warn!("Error parsing incoming event {:?}: {:?}", pdu, e);
+		warn!("Error parsing incoming event {pdu:?}: {e:?}");
 		Error::BadServerResponse("Invalid PDU in server response")
 	})?;