fix clippy warnings

src/fullnode.rs

@@ -215,6 +215,7 @@ impl Fullnode {
     ///   `--------`  |                               |    `------------`
     ///               `-------------------------------`
     /// ```
+    #[cfg_attr(feature = "cargo-clippy", allow(too_many_arguments))]
     pub fn new_with_bank(
         keypair: Keypair,
         bank: Bank,

src/poh.rs

@@ -84,7 +84,7 @@ pub fn verify(initial: Hash, entries: &[PohEntry]) -> bool {
         last_hash = id;
     }
 
-    return true;
+    true
 }
 
 #[cfg(test)]

src/sigverify_stage.rs

@@ -66,13 +66,13 @@ impl SigVerifyStage {
 
         let verified_batch = Self::verify_batch(batch, sigverify_disabled);
 
-        match sendr
+        if sendr
             .lock()
             .expect("lock in fn verify_batch in tpu")
             .send(verified_batch)
+            .is_err()
         {
-            Err(_) => return Err(Error::SendError),
-            _ => (),
+            return Err(Error::SendError);
         }
 
         let total_time_ms = timing::duration_as_ms(&now.elapsed());

src/transaction.rs

@@ -81,7 +81,7 @@ impl Transaction {
     ) -> Self {
         let payment = Payment {
             tokens: tokens - fee,
-            to: to,
+            to,
         };
         let budget = Budget::Pay(payment);
         let instruction = Instruction::NewContract(Contract { budget, tokens });

src/wallet.rs

@@ -235,7 +235,7 @@ pub fn process_command(config: &WalletConfig) -> Result<String, Box<error::Error
             }
             let signature_str = signature.as_str().unwrap();
 
-            Ok(format!("{}", signature_str))
+            Ok(signature_str.to_string())
         }
     }
 }
@@ -311,7 +311,7 @@ pub enum WalletRpcRequest {
 impl WalletRpcRequest {
     fn make_rpc_request(
         &self,
-        rpc_addr: &String,
+        rpc_addr: &str,
         id: u64,
         params: Option<Value>,
     ) -> Result<Value, Box<error::Error>> {