{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"unsafe_infer_vars:"}]}
        unsafe_infer_vars: &OnceCell<UnordMap<ty::TyVid, (HirId, Span, UnsafeUseReason)>>,
        &self,
        coercion_graph: &VecGraph<ty::TyVid, true>,