error[E0308]: mismatched types --> $DIR/issue-57741.rs:20:9 | LL | let y = match x { | - | | | this expression has type `Box` | help: consider dereferencing the boxed value: `*x` LL | T::A(a) | T::B(a) => a, | ^^^^^^^ expected `Box`, found `T` | = note: expected struct `Box` found enum `T` error[E0308]: mismatched types --> $DIR/issue-57741.rs:20:19 | LL | let y = match x { | - | | | this expression has type `Box` | help: consider dereferencing the boxed value: `*x` LL | T::A(a) | T::B(a) => a, | ^^^^^^^ expected `Box`, found `T` | = note: expected struct `Box` found enum `T` error[E0308]: mismatched types --> $DIR/issue-57741.rs:27:9 | LL | let y = match x { | - | | | this expression has type `Box` | help: consider dereferencing the boxed value: `*x` LL | S::A { a } | S::B { b: a } => a, | ^^^^^^^^^^ expected `Box`, found `S` | = note: expected struct `Box` found enum `S` error[E0308]: mismatched types --> $DIR/issue-57741.rs:27:22 | LL | let y = match x { | - | | | this expression has type `Box` | help: consider dereferencing the boxed value: `*x` LL | S::A { a } | S::B { b: a } => a, | ^^^^^^^^^^^^^ expected `Box`, found `S` | = note: expected struct `Box` found enum `S` error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0308`.