syntax_data: {"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let mut remap = IndexVec::from_elem_n(None, saved_locals.domain_size());
context_before:         iter::repeat(IndexVec::new()).take(CoroutineArgs::RESERVED_VARIANTS).collect();
context_after:     for (suspension_point_idx, live_locals) in live_locals_at_suspension_points.iter().enumerate() {