chore: code cleanup

https://rust-lang.github.io/rust-clippy/master/index.html#op_ref

https://rust-lang.github.io/rust-clippy/master/index.html#str_to_string

https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes

src/service/rooms/auth_chain/mod.rs

@@ -15,10 +15,7 @@ pub struct Service {
 }
 
 impl Service {
-    pub fn get_cached_eventid_authchain<'a>(
-        &'a self,
-        key: &[u64],
-    ) -> Result<Option<Arc<HashSet<u64>>>> {
+    pub fn get_cached_eventid_authchain(&self, key: &[u64]) -> Result<Option<Arc<HashSet<u64>>>> {
         self.db.get_cached_eventid_authchain(key)
     }
 

src/service/rooms/event_handler/mod.rs

@@ -639,7 +639,7 @@ impl Service {
                     origin,
                     get_room_state_ids::v1::Request {
                         room_id: room_id.to_owned(),
-                        event_id: (&*incoming_pdu.event_id).to_owned(),
+                        event_id: (*incoming_pdu.event_id).to_owned(),
                     },
                 )
                 .await

src/service/rooms/state_cache/data.rs

@@ -37,7 +37,7 @@ pub trait Data: Send + Sync {
         room_id: &RoomId,
     ) -> Box<dyn Iterator<Item = Result<OwnedServerName>> + 'a>;
 
-    fn server_in_room<'a>(&'a self, server: &ServerName, room_id: &RoomId) -> Result<bool>;
+    fn server_in_room(&self, server: &ServerName, room_id: &RoomId) -> Result<bool>;
 
     /// Returns an iterator of all rooms a server participates in (as far as we know).
     fn server_rooms<'a>(

src/service/rooms/timeline/mod.rs

@@ -378,7 +378,7 @@ impl Service {
                     )?;
                     let server_user = format!("@conduit:{}", services().globals.server_name());
 
-                    let to_conduit = body.starts_with(&format!("{}: ", server_user));
+                    let to_conduit = body.starts_with(&format!("{server_user}: "));
 
                     // This will evaluate to false if the emergency password is set up so that
                     // the administrator can execute commands as conduit