diff -r 6e3e5be8b2e2 -r 52844baced17 rust/hwphysics/src/common.rs
--- a/rust/hwphysics/src/common.rs	Wed Aug 28 23:06:34 2019 +0300
+++ b/rust/hwphysics/src/common.rs	Thu Aug 29 00:06:31 2019 +0300
@@ -1,9 +1,5 @@
 use fpnum::FPNum;
-use std::{
-    collections::BinaryHeap,
-    num::NonZeroU16,
-    ops::{Add, Index, IndexMut},
-};
+use std::{collections::BinaryHeap, num::NonZeroU16, ops::Add};
 
 pub type GearId = NonZeroU16;