Implement better fmt::Debug for pdu::Builder.

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

src/service/rooms/timeline/build.rs

@@ -23,7 +23,12 @@ use super::RoomMutexGuard;
 /// takes a roomid_mutex_state, meaning that only this function is able to
 /// mutate the room state.
 #[implement(super::Service)]
-#[tracing::instrument(skip(self, state_lock), level = "debug", ret)]
+#[tracing::instrument(
+	name = "build_and_append"
+	level = "debug",
+	skip(self, state_lock),
+	ret,
+)]
 pub async fn build_and_append_pdu(
 	&self,
 	pdu_builder: PduBuilder,