refactor: fix warnings

src/database/abstraction/rocksdb.rs

@@ -1,6 +1,6 @@
 use super::{super::Config, watchers::Watchers, DatabaseEngine, Tree};
 use crate::{utils, Result};
-use std::{future::Future, pin::Pin, sync::Arc, collections::HashMap, sync::RwLock};
+use std::{future::Future, pin::Pin, sync::Arc, sync::RwLock};
 
 pub struct Engine {
     rocks: rocksdb::DBWithThreadMode<rocksdb::MultiThreaded>,
@@ -13,7 +13,7 @@ pub struct RocksDbEngineTree<'a> {
     db: Arc<Engine>,
     name: &'a str,
     watchers: Watchers,
-    write_lock: RwLock<()>
+    write_lock: RwLock<()>,
 }
 
 fn db_options(cache_capacity_bytes: usize, rocksdb_cache: &rocksdb::Cache) -> rocksdb::Options {

src/database/abstraction/sqlite.rs

@@ -172,7 +172,7 @@ impl SqliteTable {
 
         let statement_ref = NonAliasingBox(statement);
 
-        let name = self.name.clone();
+        //let name = self.name.clone();
 
         let iterator = Box::new(
             statement
@@ -267,7 +267,7 @@ impl Tree for SqliteTable {
         let guard = self.engine.read_lock_iterator();
         let from = from.to_vec(); // TODO change interface?
 
-        let name = self.name.clone();
+        //let name = self.name.clone();
 
         if backwards {
             let statement = Box::leak(Box::new(

src/database/abstraction/watchers.rs

@@ -1,8 +1,8 @@
 use std::{
     collections::{hash_map, HashMap},
-    sync::RwLock,
     future::Future,
     pin::Pin,
+    sync::RwLock,
 };
 use tokio::sync::watch;