syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                         if !tcx.features().string_deref_patterns() {
context_before:                     ty::Adt(def, _) if tcx.is_lang_item(def.did(), LangItem::String) => {
context_after:                             span_bug!(