error[E0596]: cannot borrow `not_mut` as mutable, as it is not declared as mutable --> $DIR/nested-binding-modes-mut.rs:4:5 | LL | &mut not_mut; | ^^^^^^^^^^^^ cannot borrow as mutable | help: consider changing this to be mutable | LL | let mut is_mut @ mut not_mut = 42; | +++ error[E0596]: cannot borrow `not_mut` as mutable, as it is not declared as mutable --> $DIR/nested-binding-modes-mut.rs:9:5 | LL | &mut not_mut; | ^^^^^^^^^^^^ cannot borrow as mutable | help: consider changing this to be mutable | LL | let mut not_mut @ mut is_mut = 42; | +++ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0596`.