error[E0072]: recursive type `Foo` has infinite size --> $DIR/issue-84611.rs:1:1 | LL | struct Foo { | ^^^^^^^^^^^^^ LL | LL | x: Foo<[T; 1]>, | ----------- recursive without indirection | help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle | LL | x: Box>, | ++++ + error: aborting due to previous error For more information about this error, try `rustc --explain E0072`.