-#![feature(plugin)]
-
-#![plugin(clippy)]
-#![deny(neg_multiply)]
-#![allow(no_effect, unnecessary_operation)]
+#![warn(clippy::neg_multiply)]
+#![allow(clippy::no_effect, clippy::unnecessary_operation)]
use std::ops::Mul;
x * -1;
-
-1 * x;
-
-1 * -1; // should be ok
X * -1; // should be ok