error: use of unit struct `S1` that will be deprecated in future version 99.99.99: effectively never
  --> $DIR/staged-deprecation-in-future.rs:16:13
   |
LL |     let _ = S1;
   |             ^^
   |
note: the lint level is defined here
  --> $DIR/staged-deprecation-in-future.rs:1:9
   |
LL | #![deny(deprecated_in_future)]
   |         ^^^^^^^^^^^^^^^^^^^^

error: use of unit struct `S2` that will be deprecated in a future Rust version: literally never
  --> $DIR/staged-deprecation-in-future.rs:17:13
   |
LL |     let _ = S2;
   |             ^^

error: aborting due to 2 previous errors