addressing clippy lints

src/cache/hashcache.rs

@@ -48,7 +48,7 @@ impl HashCache {
     // retrive [PoWConfig] from cache. Deletes config post retrival
     fn retrive_pow_config(&mut self, string: String) -> CaptchaResult<Option<CachedPoWConfig>> {
         if let Some(difficulty_factor) = self.remove_pow_config(&string) {
-            Ok(Some(difficulty_factor.to_owned()))
+            Ok(Some(difficulty_factor))
         } else {
             Ok(None)
         }
@@ -69,9 +69,9 @@ impl HashCache {
     fn verify_captcha_result(&mut self, challenge: VerifyCaptchaResult) -> CaptchaResult<bool> {
         if let Some(captcha_id) = self.remove_cache_result(&challenge.token) {
             if captcha_id == challenge.key {
-                return Ok(true);
+                Ok(true)
             } else {
-                return Ok(false);
+                Ok(false)
             }
         } else {
             Ok(false)
@@ -101,7 +101,7 @@ impl Handler<CachePoW> for HashCache {
         let addr = ctx.address();
         let del_msg = DeletePoW(msg.string.clone());
 
-        let duration: Duration = Duration::new(msg.duration.clone(), 0);
+        let duration: Duration = Duration::new(msg.duration, 0);
         let wait_for = async move {
             //sleep(duration).await;
             delay_for(duration).await;
@@ -144,7 +144,7 @@ impl Handler<CacheResult> for HashCache {
             token: msg.token.clone(),
         };
 
-        let duration: Duration = Duration::new(msg.duration.clone(), 0);
+        let duration: Duration = Duration::new(msg.duration, 0);
         let wait_for = async move {
             //sleep(duration).await;
             delay_for(duration).await;

src/master/embedded/counter.rs

@@ -284,7 +284,7 @@ pub mod tests {
             Some(CaptchaError::PleaseSetValue("defense".into()))
         );
 
-        let m = MCaptchaBuilder::default().defense(defense.clone()).build();
+        let m = MCaptchaBuilder::default().defense(defense).build();
         assert_eq!(
             m.err(),
             Some(CaptchaError::PleaseSetValue("duration".into()))

src/master/embedded/master.rs

@@ -45,7 +45,7 @@ impl MasterTrait for Master {}
 impl Master {
     /// add [Counter] actor to [Master]
     pub fn add_site(&mut self, addr: Addr<Counter>, id: String) {
-        self.sites.insert(id, (None, addr.to_owned()));
+        self.sites.insert(id, (None, addr));
     }
 
     /// create new master
@@ -58,7 +58,7 @@ impl Master {
     }
 
     /// get [Counter] actor from [Master]
-    pub fn get_site<'a, 'b>(&'a mut self, id: &'b str) -> Option<Addr<Counter>> {
+    pub fn get_site(&mut self, id: &str) -> Option<Addr<Counter>> {
         let mut r = None;
         if let Some((read_val, addr)) = self.sites.get_mut(id) {
             r = Some(addr.clone());
@@ -111,7 +111,7 @@ impl Handler<AddVisitor> for Master {
                 ctx.spawn(fut);
             }
         }
-        return MessageResult(rx);
+        MessageResult(rx)
     }
 }
 
@@ -125,10 +125,9 @@ impl Handler<GetSite> for Master {
 
     fn handle(&mut self, m: GetSite, _ctx: &mut Self::Context) -> Self::Result {
         let addr = self.get_site(&m.0);
-        if addr.is_none() {
-            return MessageResult(None);
-        } else {
-            return MessageResult(Some(addr.unwrap().clone()));
+        match addr {
+            None => MessageResult(None),
+            Some(addr) => MessageResult(Some(addr)),
         }
     }
 }

src/master/redis/connection.rs

@@ -77,24 +77,17 @@ impl MCaptchaRedisConnection {
         let commands = vec![ADD_VISITOR, ADD_CAPTCHA, DEL, CAPTCHA_EXISTS, GET];
 
         for cmd in commands.iter() {
-            match self
+            if let Value::Bulk(mut val) = self
                 .0
                 .exec(redis::cmd("COMMAND").arg(&["INFO", cmd]))
                 .await
                 .unwrap()
             {
-                Value::Bulk(mut val) => {
-                    match val.pop() {
-                        Some(Value::Nil) => {
-                            return Err(CaptchaError::MCaptchaRediSModuleCommandNotFound(
-                                cmd.to_string(),
-                            ))
-                        }
-                        _ => (),
-                    };
-                }
-
-                _ => (),
+                if let Some(Value::Nil) = val.pop() {
+                    return Err(CaptchaError::MCaptchaRediSModuleCommandNotFound(
+                        cmd.to_string(),
+                    ));
+                };
             };
         }