remove some allow annotions and fix resulting warnings

server/texture-sync-server/src/protocol/implementation/connection.rs

@@ -3,7 +3,7 @@ use super::*;
 use std::io::*;
 use std::net::*;
 
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 
 pub struct Connection<R: Read + Sized, W: Write + Sized> {
     reader: R,
@@ -139,9 +139,9 @@ impl<R: Read + Sized, W: Write + Sized> Connection<R, W> {
                     _ => (), // else try other
                 }
 
-                let json: Command = serde_json::from_slice(&payload[..]).map_err(|e| {
+                let json: Command = serde_json::from_slice(&payload[..]).map_err(|_e| {
                     #[cfg(test)]
-                    dbg!(&e);
+                    dbg!(&_e);
 
                     Error::new(ErrorKind::InvalidData, "Invalid JSON.")
                 })?;