syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"#[tracing::instrument(level"}]}
source_snippet:     #[tracing::instrument(level = "trace", skip(tcx))]
context_after:     pub fn fn_sig(self, tcx: TyCtxt<'tcx>) -> PolyFnSig<'tcx> {