clean imports

src/main.rs

@@ -1,6 +1,8 @@
-use std::io::{Write};
-use std::{env, io};
-use std::process::exit;
+use std::{
+    env, 
+    io::{self, Write}, 
+    process::exit
+};
 
 fn main() -> Result<(), io::Error> {
     let args = env::args().collect::<Vec<String>>();