diff --git a/src/main.rs b/src/main.rs
index 3fc2798..75f53e8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,7 +5,6 @@ mod distance;
 mod parse;
 
 use std::{
-    borrow::Borrow,
     cell::RefCell,
     collections::{hash_map::Entry, HashMap},
     rc::Rc,