就先这样

src/data.rs

@@ -30,7 +30,6 @@ pub enum NbtList {
 }
 
 /// 基本 NBT 数据类型
-#[allow(unused)]
 #[derive(Debug, Clone)]
 pub enum NbtValue {
     /// 0x00
@@ -164,7 +163,6 @@ macro_rules! read_data {
     };
 }
 
-#[allow(unused)]
 impl NbtValue {
     pub fn as_end(&self) -> Option<()> {
         match self {

src/read.rs

@@ -1,4 +1,4 @@
-use crate::data::{NbtItem, NbtLength, NbtList, NbtValue, Reader};
+use crate::data::{NbtItem, NbtList, NbtValue, Reader};
 use std::convert::From;
 use std::io::{Cursor, Read};
 
@@ -220,7 +220,6 @@ pub enum NbtStatus {
 /// NbtItem
 /// 完整的读取逻辑就在这里了
 /// 来力
-#[allow(unused)]
 impl TryFrom<Cursor<&[u8]>> for NbtItem {
     type Error = std::io::Error;