{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"#[derive(HashStable,"}]}
#[derive(HashStable, TyEncodable, TyDecodable, TypeFoldable, TypeVisitable)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub struct MirSource<'tcx> {