syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"#[instrument(level"}]}
source_snippet:     #[instrument(level = "trace", skip(self, f))]
context_before: impl<'p, 'tcx> MatchVisitor<'p, 'tcx> {
context_after:     fn with_let_source(&mut self, let_source: LetSource, f: impl FnOnce(&mut Self)) {