{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"tracing::debug!(\"add_constraints_from_ty(ty={:?},"}]}
        tracing::debug!("add_constraints_from_ty(ty={:?}, variance={:?})", ty, variance);
    fn add_constraints_from_ty(&mut self, ty: &Ty, variance: Variance) {
        match ty.kind(Interner) {