chore: Clippy fixes

src/service/rooms/auth_chain/data.rs

@@ -48,8 +48,10 @@ impl Data {
 			.map_err(|_| err!(Request(NotFound("auth_chain not found"))))?;
 
 		let chain = chain
-			.chunks_exact(size_of::<u64>())
-			.map(utils::u64_from_u8)
+			.as_chunks::<{ size_of::<u64>() }>()
+			.0
+			.iter()
+			.map(|s| utils::u64_from_u8(s))
 			.collect::<Arc<[u64]>>();
 
 		// Cache in RAM

src/service/rooms/state_compressor/mod.rs

@@ -136,14 +136,14 @@ impl Service {
 
 	/// Returns a stack with info on shortstatehash, full state, added diff and
 	/// removed diff for the selected shortstatehash and each parent layer.
-	async fn cache_shortstatehash_info(
+	fn cache_shortstatehash_info(
 		&self,
 		shortstatehash: ShortStateHash,
 		stack: ShortStateInfoVec,
-	) -> Result {
+	) -> impl Future<Output = Result> {
 		self.stateinfo_cache.lock().insert(shortstatehash, stack);
 
-		Ok(())
+		std::future::ready(Ok(()))
 	}
 
 	/// Inserts a new shortstatehash info entry.

src/service/rooms/timeline/helpers.rs

@@ -82,8 +82,7 @@ impl super::Service {
 				))));
 			},
 			| StateEventType::RoomServerAcl =>
-				self.assert_allowed_to_send_room_server_acl_event(room_id, json)
-					.await?,
+				self.assert_allowed_to_send_room_server_acl_event(room_id, json)?,
 			| StateEventType::RoomEncryption =>
 			// Forbid m.room.encryption if encryption is disabled
 				if !self.services.config.allow_encryption {
@@ -109,7 +108,7 @@ impl super::Service {
 		Ok(())
 	}
 
-	async fn assert_allowed_to_send_room_server_acl_event(
+	fn assert_allowed_to_send_room_server_acl_event(
 		&self,
 		room_id: &RoomId,
 		json: &Raw<AnyStateEventContent>,