syntax_data: {"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"iter::repeat(IndexVec::new()).take(CoroutineArgs::RESERVED_VARIANTS).collect();"}]}
source_snippet:         iter::repeat(IndexVec::new()).take(CoroutineArgs::RESERVED_VARIANTS).collect();
context_before:     let mut variant_fields: IndexVec<VariantIdx, IndexVec<FieldIdx, CoroutineSavedLocal>> =
context_after:     let mut remap = IndexVec::from_elem_n(None, saved_locals.domain_size());