syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"tcx.dcx().delayed_bug(format!("}]}
source_snippet:                 tcx.dcx().delayed_bug(format!(
context_before:             if !tcx.is_lang_item(adt_def.did(), LangItem::TransmuteOpts) {
context_after:                     "The given `const` was not marked with the `{}` lang item.",