syntax_data: {"ast_node_type":"other","tokens":[{"end":9,"kind":"keyword","start":0,"text":"{"}]}
source_snippet:         {
context_before:             && let ty::FnDef(def_id, fn_args) = *func.const_.ty().kind()
context_after:             if tcx.intrinsic(def_id)?.name != sym::rustc_peek {