syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:     for (saved_local_a, local_a) in saved_locals.iter_enumerated() {
context_before:     let mut storage_conflicts = BitMatrix::new(saved_locals.count(), saved_locals.count());
context_after:         if ineligible_locals.contains(local_a) {