fix cargo clippy lints

src/database/abstraction/watchers.rs

@@ -8,6 +8,7 @@ use tokio::sync::watch;
 
 #[derive(Default)]
 pub(super) struct Watchers {
+    #[allow(clippy::type_complexity)]
     watchers: RwLock<HashMap<Vec<u8>, (watch::Sender<()>, watch::Receiver<()>)>>,
 }
 

src/database/key_value/rooms/state_accessor.rs

@@ -20,7 +20,7 @@ impl service::rooms::state_accessor::Data for KeyValueDatabase {
             let parsed = services()
                 .rooms
                 .state_compressor
-                .parse_compressed_state_event(&compressed)?;
+                .parse_compressed_state_event(compressed)?;
             result.insert(parsed.0, parsed.1);
 
             i += 1;
@@ -49,7 +49,7 @@ impl service::rooms::state_accessor::Data for KeyValueDatabase {
             let (_, eventid) = services()
                 .rooms
                 .state_compressor
-                .parse_compressed_state_event(&compressed)?;
+                .parse_compressed_state_event(compressed)?;
             if let Some(pdu) = services().rooms.timeline.get_pdu(&eventid)? {
                 result.insert(
                     (
@@ -101,7 +101,7 @@ impl service::rooms::state_accessor::Data for KeyValueDatabase {
                 services()
                     .rooms
                     .state_compressor
-                    .parse_compressed_state_event(&compressed)
+                    .parse_compressed_state_event(compressed)
                     .ok()
                     .map(|(_, id)| id)
             }))

src/database/key_value/rooms/state_cache.rs

@@ -471,6 +471,7 @@ impl service::rooms::state_cache::Data for KeyValueDatabase {
     }
 
     /// Returns an iterator over all rooms a user was invited to.
+    #[allow(clippy::type_complexity)]
     #[tracing::instrument(skip(self))]
     fn rooms_invited<'a>(
         &'a self,
@@ -549,6 +550,7 @@ impl service::rooms::state_cache::Data for KeyValueDatabase {
     }
 
     /// Returns an iterator over all rooms a user left.
+    #[allow(clippy::type_complexity)]
     #[tracing::instrument(skip(self))]
     fn rooms_left<'a>(
         &'a self,

src/database/key_value/rooms/threads.rs

@@ -52,13 +52,13 @@ impl service::rooms::threads::Data for KeyValueDatabase {
             .collect::<Vec<_>>()
             .join(&[0xff][..]);
 
-        self.threadid_userids.insert(&root_id, &users)?;
+        self.threadid_userids.insert(root_id, &users)?;
 
         Ok(())
     }
 
     fn get_participants(&self, root_id: &[u8]) -> Result<Option<Vec<OwnedUserId>>> {
-        if let Some(users) = self.threadid_userids.get(&root_id)? {
+        if let Some(users) = self.threadid_userids.get(root_id)? {
             Ok(Some(
                 users
                     .split(|b| *b == 0xff)

src/database/key_value/rooms/timeline.rs

@@ -39,11 +39,10 @@ impl service::rooms::timeline::Data for KeyValueDatabase {
 
     /// Returns the `count` of this pdu's id.
     fn get_pdu_count(&self, event_id: &EventId) -> Result<Option<PduCount>> {
-        Ok(self
-            .eventid_pduid
+        self.eventid_pduid
             .get(event_id.as_bytes())?
             .map(|pdu_id| pdu_count(&pdu_id))
-            .transpose()?)
+            .transpose()
     }
 
     /// Returns the json of a pdu.
@@ -80,7 +79,7 @@ impl service::rooms::timeline::Data for KeyValueDatabase {
 
     /// Returns the pdu's id.
     fn get_pdu_id(&self, event_id: &EventId) -> Result<Option<Vec<u8>>> {
-        Ok(self.eventid_pduid.get(event_id.as_bytes())?)
+        self.eventid_pduid.get(event_id.as_bytes())
     }
 
     /// Returns the pdu.
@@ -230,7 +229,7 @@ impl service::rooms::timeline::Data for KeyValueDatabase {
         room_id: &RoomId,
         until: PduCount,
     ) -> Result<Box<dyn Iterator<Item = Result<(PduCount, PduEvent)>> + 'a>> {
-        let (prefix, current) = count_to_id(&room_id, until, 1, true)?;
+        let (prefix, current) = count_to_id(room_id, until, 1, true)?;
 
         let user_id = user_id.to_owned();
 
@@ -257,7 +256,7 @@ impl service::rooms::timeline::Data for KeyValueDatabase {
         room_id: &RoomId,
         from: PduCount,
     ) -> Result<Box<dyn Iterator<Item = Result<(PduCount, PduEvent)>> + 'a>> {
-        let (prefix, current) = count_to_id(&room_id, from, 1, false)?;
+        let (prefix, current) = count_to_id(room_id, from, 1, false)?;
 
         let user_id = user_id.to_owned();