syntax_data: {"ast_node_type":"variable","tokens":[{"end":40,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let span = tcx.hir_span(id);
context_before:         let unsafe_not_inherited_note = if let Some((id, _)) = note_non_inherited {
context_after:             let span = tcx.sess.source_map().guess_head_span(span);