error: use of item 'S' that will be deprecated in future version 99.99.99: effectively never
  --> $DIR/rustc_deprecation-in-future.rs:14:13
   |
LL |     let _ = S;
   |             ^
   |
note: the lint level is defined here
  --> $DIR/rustc_deprecation-in-future.rs:3:9
   |
LL | #![deny(deprecated_in_future)]
   |         ^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error