syntax_data: {"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"debug!(\"expr_as_rvalue(block={:?},"}]}
source_snippet:         debug!("expr_as_rvalue(block={:?}, scope={:?}, expr={:?})", block, scope, expr);
context_before:         let expr = &this.thir[expr_id];