Update main.rs

Formated!

Author: 梶塚太智

src/main.rs

@@ -2,9 +2,9 @@ use opener;
 use rand::seq::SliceRandom;
 use std::collections::HashMap;
 use std::env;
-use std::path::Path;
 use std::fs::{self, File};
 use std::io::{self, Error, Read, Write};
+use std::path::Path;
 use std::thread;
 use std::thread::sleep;
 use std::time::{Duration, SystemTime, UNIX_EPOCH};