messing around with arcs

src/service/rooms/timeline/data.rs

@@ -4,7 +4,7 @@ use ruma::{signatures::CanonicalJsonObject, EventId, UserId, RoomId};
 
 use crate::{Result, PduEvent};
 
-pub trait Data {
+pub trait Data: Send + Sync {
     fn last_timeline_count(&self, sender_user: &UserId, room_id: &RoomId) -> Result<u64>;
 
     /// Returns the `count` of this pdu's id.