syntax_data: {"ast_node_type":"other","tokens":[{"end":6,"kind":"keyword","start":0,"text":"};"}]}
source_snippet:     };
context_before:         node => span_bug!(tcx.def_span(def_id), "impl item or item not found: {:?}", node,),
context_after:     debug_assert_eq!(assoc_item.def_id.expect_local(), def_id);