error: variable does not need to be mutable --> $DIR/lint-unused-mut-self.rs:10:12 | LL | fn foo(mut self) {} | ----^^^^ | | | help: remove this `mut` | note: the lint level is defined here --> $DIR/lint-unused-mut-self.rs:6:9 | LL | #![deny(unused_mut)] | ^^^^^^^^^^ error: variable does not need to be mutable --> $DIR/lint-unused-mut-self.rs:11:12 | LL | fn bar(mut self: Box) {} | ----^^^^ | | | help: remove this `mut` error: aborting due to 2 previous errors