simpler update

crates/server/src/main_loop/mod.rs

@@ -252,7 +252,7 @@ fn on_notification(
 fn handle_request_on_threadpool<R: req::ClientRequest>(
     req: &mut Option<RawRequest>,
     pool: &ThreadPool,
-    world: &mut ServerWorldState,
+    world: &ServerWorldState,
     sender: &Sender<Task>,
     f: fn(ServerWorld, R::Params) -> Result<R::Result>,
 ) -> Result<()>

crates/server/src/server_world.rs

@@ -86,7 +86,7 @@ impl ServerWorldState {
         Ok(())
     }
 
-    pub fn snapshot(&mut self) -> ServerWorld {
+    pub fn snapshot(&self) -> ServerWorld {
         let pm = self.path_map.clone();
         ServerWorld {
             analysis: self.analysis.snapshot(move |id, path| {