{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"coercion_graph:"}]}
        coercion_graph: &VecGraph<ty::TyVid, true>,
        unsafe_infer_vars: &OnceCell<UnordMap<ty::TyVid, (HirId, Span, UnsafeUseReason)>>,
        root_vid: ty::TyVid,