syntax_data: {"ast_node_type":"variable","tokens":[{"end":98,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let scrutinee_place_builder = unpack!(block = self.as_place_builder(block, scrutinee_id));
context_before:     ) -> BlockAnd<PlaceBuilder<'tcx>> {
context_after:         if let Some(scrutinee_place) = scrutinee_place_builder.try_to_place(self) {