syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"#[cfg(not(feature"}]}
source_snippet:     #[cfg(not(feature = "nightly"))]
context_before: impl<I: Interner> TypeVisitor<I> for OutlivesCollector<'_, I> {
context_after:     type Result = ();