syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"bug!(\"not"}]}
source_snippet:                     bug!("not an adt: {def:?} ({:?})", tcx.def_kind(def.did()))
context_before:                 | DefKind::SyntheticCoroutineBody => {
context_after:                 }