error: functional record updates are not allowed in destructuring assignments --> $DIR/note-unsupported.rs:20:17 | LL | S { x: a, ..s } = S { x: 3, y: 4 }; | ^ help: consider removing the trailing pattern error[E0368]: binary assignment operation `+=` cannot be applied to type `({integer}, {integer})` --> $DIR/note-unsupported.rs:7:5 | LL | (a, b) += (3, 4); | ------^^^^^^^^^^ | | | cannot use `+=` on type `({integer}, {integer})` error[E0067]: invalid left-hand side of assignment --> $DIR/note-unsupported.rs:7:12 | LL | (a, b) += (3, 4); | ------ ^^ | | | cannot assign to this expression error[E0368]: binary assignment operation `+=` cannot be applied to type `[{integer}; 2]` --> $DIR/note-unsupported.rs:11:5 | LL | [a, b] += [3, 4]; | ------^^^^^^^^^^ | | | cannot use `+=` on type `[{integer}; 2]` error[E0067]: invalid left-hand side of assignment --> $DIR/note-unsupported.rs:11:12 | LL | [a, b] += [3, 4]; | ------ ^^ | | | cannot assign to this expression error[E0368]: binary assignment operation `+=` cannot be applied to type `S` --> $DIR/note-unsupported.rs:17:5 | LL | S { x: a, y: b } += s; | ----------------^^^^^ | | | cannot use `+=` on type `S` | note: an implementation of `AddAssign<_>` might be missing for `S` --> $DIR/note-unsupported.rs:1:1 | LL | struct S { x: u8, y: u8 } | ^^^^^^^^ must implement `AddAssign<_>` note: the trait `AddAssign` must be implemented --> $SRC_DIR/core/src/ops/arith.rs:LL:COL error[E0067]: invalid left-hand side of assignment --> $DIR/note-unsupported.rs:17:22 | LL | S { x: a, y: b } += s; | ---------------- ^^ | | | cannot assign to this expression error: aborting due to 7 previous errors Some errors have detailed explanations: E0067, E0368. For more information about an error, try `rustc --explain E0067`.