syntax_data: {"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let source_info = data.terminator().source_info;
context_before:         if let Some((is_return, resume, v, drop)) = ret_val {
context_after:             // We must assign the value first in case it gets declared dead below