syntax_data: {"ast_node_type":"variable","tokens":[{"end":63,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let remove_asyncness = |block: &mut BasicBlockData<'tcx>| {
context_before:     // Clean drop and async_fut fields if potentially async drop is not expanded (stays sync)
context_after:         if let TerminatorKind::Drop {