resolve warnings

This patch resolves active warnings that are not necessary.

Signed-off-by: Amy Parker <amy@amyip.net>

src/aes.rs

@@ -1,7 +1,7 @@
 use std::io::{Error, ErrorKind};
 
 use aes_gcm_siv::{
-    aead::{Aead, OsRng},
+    aead::Aead,
     Aes256GcmSiv, KeyInit, Nonce,
 };
 use rand::RngCore;

src/bson.rs

@@ -1,8 +1,6 @@
 use std::io::{Error, ErrorKind};
 
-use bson::spec::BinarySubtype;
-use bson::{bson, Binary, Bson, Document};
-use serde::ser::{SerializeStruct, Serializer};
+use bson::Document;
 use serde::{Serialize, Deserialize};
 
 #[derive(Serialize, Deserialize, PartialEq, Debug)]

src/padding.rs

@@ -40,7 +40,7 @@ fn encapsulate(pkt: &[u8]) -> Vec<u8> {
     back_pad.insert(0, '}' as u8);
 
     // define a new vector to add the front pad, the packet, and finally the back pad
-    let mut encapsulated_pkt = Vec::with_capacity((pkt.len() + front_pad.len() + back_pad.len()));
+    let mut encapsulated_pkt = Vec::with_capacity(pkt.len() + front_pad.len() + back_pad.len());
     encapsulated_pkt.extend(front_pad);
     encapsulated_pkt.extend(pkt);
     encapsulated_pkt.extend(back_pad);