{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"cx.emit_err(session_diagnostics::UnstableFeatureBoundIncompatibleStability"}]}
                    cx.emit_err(session_diagnostics::UnstableFeatureBoundIncompatibleStability {
                if other_attr.word_is(sym::unstable_feature_bound) {
                        span: cx.target_span,