{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"#[derive(Copy,"}]}
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
/// See also `rustc_const_eval::borrow_check::constraints`.
#[derive(TyEncodable, TyDecodable, HashStable, TypeVisitable, TypeFoldable)]