syntax_data: {"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             } else {
context_before:                 span_bug!(self.source_info.span, "builtin derive created an unaligned reference");
context_after:                 self.tcx.dcx().emit_err(errors::UnalignedPackedRef { span: self.source_info.span });