syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"Rvalue::Ref(re_erased,"}]}
source_snippet:                         Rvalue::Ref(re_erased, util::ref_pat_borrow_kind(mutbl), binding.source);
context_before:                     let rvalue =
context_after:                     self.cfg.push_assign(block, source_info, value_for_arm, rvalue);