Fix 7 warnings

src/predictors/benchmark.rs

@@ -92,7 +92,7 @@ impl<P:Predictor> Predictor for BenchmarkingPredictor<P> {
 
     fn update_from_importer<I: Importer>(&mut self, importer:  &mut I, count: usize) -> Result<usize,Box<dyn std::error::Error>> {
 
-        let mut raw_list = String::new();
+        let raw_list: String;
         let blocklist: Vec<&str> = match self.configuration.get("blocklist") {
             Some(list) => {
                 match fs::read_to_string(list) {
@@ -121,10 +121,9 @@ impl<P:Predictor> Predictor for BenchmarkingPredictor<P> {
         let data = importer.fetch_queries(count)?;
         println!("got {} queries from the importer.", data.len());
         let mut count = 0;
-        let mut start_time = SystemTime::now();
         for q in data.iter() {
-            if(!re.is_match(&q.query)) {
-                self.update_from_query(&q.query.as_str(), None);
+            if false && !re.is_match(&q.query) {
+                let _ = self.update_from_query(&q.query.as_str(), None);
             }
             count += 1;
             // if count%100 == 0 {
@@ -136,7 +135,7 @@ impl<P:Predictor> Predictor for BenchmarkingPredictor<P> {
 
     fn update_from_query(&mut self, query: &str, blocklist: Option<&Vec<&str>>) -> Result<(), Box<dyn std::error::Error>> {
 
-        if (query.len() > 3) {
+        if query.len() > 3 {
             self.total_queries += 1;
             let trunc_query = &query.chars().take(query.len().saturating_sub(3)).collect::<String>();
             let prediction = self.predictor.predict(trunc_query, 5);
@@ -152,7 +151,7 @@ impl<P:Predictor> Predictor for BenchmarkingPredictor<P> {
 
             }
         }
-        self.predictor.update_from_query(query, blocklist);
+        let _ = self.predictor.update_from_query(query, blocklist);
         Ok(())
     }