error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:4:11 | LL | 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:20:17 | LL | let mut x = &mut &mut 1u32; | ^^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:14:9 | LL | &mut $p | ^^^^^^^ ... LL | let mut z = mut_ptr!(&mut 3u32); | ------------------- in this macro invocation | = note: this error originates in the macro `mut_ptr` (in Nightly builds, run with -Z macro-backtrace for more info) error: this expression mutably borrows a mutable reference. Consider reborrowing --> $DIR/mut_mut.rs:22:21 | LL | let mut y = &mut x; | ^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:26:32 | LL | let y: &mut &mut u32 = &mut &mut 2; | ^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:26:16 | LL | let y: &mut &mut u32 = &mut &mut 2; | ^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:31:37 | LL | let y: &mut &mut &mut u32 = &mut &mut &mut 2; | ^^^^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:31:16 | LL | let y: &mut &mut &mut u32 = &mut &mut &mut 2; | ^^^^^^^^^^^^^^^^^^ error: generally you want to avoid `&mut &mut _` if possible --> $DIR/mut_mut.rs:31:21 | LL | let y: &mut &mut &mut u32 = &mut &mut &mut 2; | ^^^^^^^^^^^^^ error: aborting due to 9 previous errors