error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:13:11 | 13 | fn fun(x: &mut &mut u32) -> bool { | ^^^^^^^^^^^^^ | = note: `-D clippy::mut-mut` implied by `-D warnings` error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:29:17 | 29 | let mut x = &mut &mut 1u32; | ^^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:23:9 | 23 | &mut $p | ^^^^^^^ ... 44 | let mut z = mut_ptr!(&mut 3u32); | ------------------- in this macro invocation error: this expression mutably borrows a mutable reference. Consider reborrowing --> $DIR/mut_mut.rs:31:21 | 31 | let mut y = &mut x; | ^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:35:32 | 35 | let y: &mut &mut u32 = &mut &mut 2; | ^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:35:16 | 35 | let y: &mut &mut u32 = &mut &mut 2; | ^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:40:37 | 40 | let y: &mut &mut &mut u32 = &mut &mut &mut 2; | ^^^^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:40:16 | 40 | let y: &mut &mut &mut u32 = &mut &mut &mut 2; | ^^^^^^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:40:21 | 40 | let y: &mut &mut &mut u32 = &mut &mut &mut 2; | ^^^^^^^^^^^^^ error: aborting due to 9 previous errors