error[E0594]: cannot assign to field `x.0` of immutable binding --> $DIR/reassignment_immutable_fields.rs:17:5 | LL | let x: (u32, u32); | - help: make this binding mutable: `mut x` LL | x.0 = 1; //~ ERROR | ^^^^^^^ cannot mutably borrow field of immutable binding error[E0594]: cannot assign to field `x.1` of immutable binding --> $DIR/reassignment_immutable_fields.rs:18:5 | LL | let x: (u32, u32); | - help: make this binding mutable: `mut x` LL | x.0 = 1; //~ ERROR LL | x.1 = 22; //~ ERROR | ^^^^^^^^ cannot mutably borrow field of immutable binding error[E0381]: use of possibly uninitialized variable: `x.0` --> $DIR/reassignment_immutable_fields.rs:19:10 | LL | drop(x.0); //~ ERROR | ^^^ use of possibly uninitialized `x.0` error[E0381]: use of possibly uninitialized variable: `x.1` --> $DIR/reassignment_immutable_fields.rs:20:10 | LL | drop(x.1); //~ ERROR | ^^^ use of possibly uninitialized `x.1` error[E0594]: cannot assign to field `x.0` of immutable binding --> $DIR/reassignment_immutable_fields.rs:25:5 | LL | let x: (u32, u32); | - help: make this binding mutable: `mut x` LL | x.0 = 1; //~ ERROR | ^^^^^^^ cannot mutably borrow field of immutable binding error[E0594]: cannot assign to field `x.1` of immutable binding --> $DIR/reassignment_immutable_fields.rs:26:5 | LL | let x: (u32, u32); | - help: make this binding mutable: `mut x` LL | x.0 = 1; //~ ERROR LL | x.1 = 22; //~ ERROR | ^^^^^^^^ cannot mutably borrow field of immutable binding error[E0381]: use of possibly uninitialized variable: `x` --> $DIR/reassignment_immutable_fields.rs:27:10 | LL | drop(x); //~ ERROR | ^ use of possibly uninitialized `x` error: aborting due to 7 previous errors Some errors occurred: E0381, E0594. For more information about an error, try `rustc --explain E0381`.