error[E0599]: no method named `clone` found for type `Foo` in the current scope --> $DIR/noncopyable-class.rs:34:16 | LL | struct Foo { | ---------- method `clone` not found for this ... LL | let _y = x.clone(); //~ ERROR no method named `clone` found | ^^^^^ | = help: items from traits can only be used if the trait is implemented and in scope = note: the following trait defines an item `clone`, perhaps you need to implement it: candidate #1: `std::clone::Clone` error: aborting due to previous error For more information about this error, try `rustc --explain E0599`.