syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"trace!(?pat_ctxt.typeck_results.hir_owner);"}]}
source_snippet:         trace!(?pat_ctxt.typeck_results.hir_owner);
context_before:     fn new(pat_ctxt: &PatCtxt<'_, 'tcx>, id: hir::HirId, span: Span, c: ty::Const<'tcx>) -> Self {
context_after:         ConstToPat { tcx: pat_ctxt.tcx, typing_env: pat_ctxt.typing_env, span, id, c }