syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"[ty::GenericArg::from(ty)],"}]}
source_snippet:                         [ty::GenericArg::from(ty)],
context_before:                         tcx.require_lang_item(LangItem::Freeze, obligation.cause.span),
context_after:                     );