syntax_data: {"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                     let correct_si = this.source_info(expr_span.shrink_to_hi());
context_before:                     // Generate the implicit `else {}` by assigning unit.
context_after:                     this.cfg.push_assign_unit(else_blk, correct_si, destination, this.tcx);