error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable --> $DIR/borrow-raw-address-of-mutability.rs:5:13 | LL | let x = 0; | - help: consider changing this to be mutable: `mut x` LL | let y = &raw mut x; | ^^^^^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable --> $DIR/borrow-raw-address-of-mutability.rs:11:17 | LL | let x = 0; | - help: consider changing this to be mutable: `mut x` LL | let mut f = || { LL | let y = &raw mut x; | ^^^^^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `f` as mutable, as it is not declared as mutable --> $DIR/borrow-raw-address-of-mutability.rs:21:5 | LL | let f = || { | - help: consider changing this to be mutable: `mut f` LL | let y = &raw mut x; | - calling `f` requires mutable binding due to mutable borrow of `x` LL | }; LL | f(); | ^ cannot borrow as mutable error[E0596]: cannot borrow `x` as mutable, as it is a captured variable in a `Fn` closure --> $DIR/borrow-raw-address-of-mutability.rs:29:17 | LL | fn make_fn(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | let f = make_fn(|| { | _____________-------_- | | | | | expects `Fn` instead of `FnMut` LL | | let y = &raw mut x; | | ^^^^^^^^^^ cannot borrow as mutable LL | | }); | |_____- in this closure error[E0596]: cannot borrow `x` as mutable, as it is a captured variable in a `Fn` closure --> $DIR/borrow-raw-address-of-mutability.rs:37:17 | LL | fn make_fn(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | let f = make_fn(move || { | _____________-------_- | | | | | expects `Fn` instead of `FnMut` LL | | let y = &raw mut x; | | ^^^^^^^^^^ cannot borrow as mutable LL | | }); | |_____- in this closure error: aborting due to 5 previous errors For more information about this error, try `rustc --explain E0596`.