error[E0119]: conflicting implementations of trait `Clone` for type `Node<[_]>` --> $DIR/issue-48728.rs:4:10 | LL | #[derive(Clone)] | ^^^^^ conflicting implementation for `Node<[_]>` ... LL | impl Clone for Node<[T]> { | ------------------------------------------- first implementation here | = note: upstream crates may add a new impl of trait `std::clone::Clone` for type `[_]` in future versions = note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to previous error For more information about this error, try `rustc --explain E0119`.