syntax_data: {"ast_node_type":"variable","tokens":[{"end":44,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let mut patch = MirPatch::new(body);
context_before:         debug!("add_moves_for_packed_drops({:?} @ {:?})", body.source, body.span);
context_after:         // FIXME(#132279): This is used during the phase transition from analysis