syntax_data: {"ast_node_type":"variable","tokens":[{"end":96,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let borrowed_locals = MaybeBorrowedLocals.iterate_to_fixpoint(tcx, body, Some("coroutine"));
context_before:     // Calculate the MIR locals that have been previously borrowed (even if they are still active).
context_after:     let mut borrowed_locals_analysis1 = borrowed_locals.analysis;