syntax_data: {"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"ocx.register_bound(cause.clone(),"}]}
source_snippet:     ocx.register_bound(cause.clone(), ty::ParamEnv::empty(), adt_ty, structural_peq_def_id);
context_before:     let structural_peq_def_id = infcx.tcx.require_lang_item(LangItem::StructuralPeq, cause.span);