{"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"///"}]}
/// let _span = enter_trace_span!(M, step::eval_statement)
/// # type M = rustc_const_eval::const_eval::CompileTimeMachine<'static>;
///     .or_if_tracing_disabled(|| tracing::info!("eval_statement"));