{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"tcx.dcx().emit_err(errors::LifetimeNotCaptured"}]}
                                tcx.dcx().emit_err(errors::LifetimeNotCaptured {
                                // and the param span will be the def span of the param.
                                    opaque_span,