syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if !tcx.has_attr(def_id, sym::rustc_mir) {
context_before:     let def_id = body.source.def_id();
context_after:         debug!("skipping rustc_peek::SanityCheck on {}", tcx.def_path_str(def_id));