error[E0594]: cannot assign to `self.0`, which is behind a `&` reference --> $DIR/suggest-ref-mut.rs:7:9 | LL | fn zap(&self) { | ----- help: consider changing this to be a mutable reference: `&mut self` ... LL | self.0 = 32; | ^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be written error[E0594]: cannot assign to `*foo`, which is behind a `&` reference --> $DIR/suggest-ref-mut.rs:16:5 | LL | let ref foo = 16; | ------- help: consider changing this to be a mutable reference: `ref mut foo` ... LL | *foo = 32; | ^^^^^^^^^ `foo` is a `&` reference, so the data it refers to cannot be written error[E0594]: cannot assign to `*bar`, which is behind a `&` reference --> $DIR/suggest-ref-mut.rs:21:9 | LL | if let Some(ref bar) = Some(16) { | ------- help: consider changing this to be a mutable reference: `ref mut bar` ... LL | *bar = 32; | ^^^^^^^^^ `bar` is a `&` reference, so the data it refers to cannot be written error[E0594]: cannot assign to `*quo`, which is behind a `&` reference --> $DIR/suggest-ref-mut.rs:25:22 | LL | ref quo => { *quo = 32; }, | ------- ^^^^^^^^^ `quo` is a `&` reference, so the data it refers to cannot be written | | | help: consider changing this to be a mutable reference: `ref mut quo` error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0594`.