{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"span_bug!(tcx.def_span(unique_did),"}]}
            span_bug!(tcx.def_span(unique_did), "expected Box to contain Unique")
        let Some(nonnull_def) = tcx.type_of(unique_did).instantiate_identity().ty_adt_def() else {
        };