syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"tracing::debug!(\"Trying"}]}
source_snippet:         tracing::debug!("Trying to parse {:?} as {}", expr.kind, $expected);
context_before:         let expr = &$self.thir[expr_id];
context_after:         let $expr_name = expr;