#![deny(deprecated_in_future)] #![feature(staged_api)] #![stable(feature = "rustc_deprecation_in_future_test", since = "1.0.0")] #[deprecated(since = "99.99.99", note = "effectively never")] #[stable(feature = "rustc_deprecation_in_future_test", since = "1.0.0")] pub struct S1; #[deprecated(since = "TBD", note = "literally never")] #[stable(feature = "rustc_deprecation_in_future_test", since = "1.0.0")] pub struct S2; fn main() { let _ = S1; //~ ERROR use of unit struct `S1` that will be deprecated in future version 99.99.99: effectively never let _ = S2; //~ ERROR use of unit struct `S2` that will be deprecated in a future Rust version: literally never }