error: struct `UnusedStruct` is never constructed
  --> $DIR/lint-dead-code-6.rs:3:8
   |
LL | struct UnusedStruct;
   |        ^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/lint-dead-code-6.rs:1:9
   |
LL | #![deny(dead_code)]
   |         ^^^^^^^^^

error: associated functions `unused_impl_fn_1`, `unused_impl_fn_2`, and `unused_impl_fn_3` are never used
  --> $DIR/lint-dead-code-6.rs:5:8
   |
LL | impl UnusedStruct {
   | ----------------- associated functions in this implementation
LL |     fn unused_impl_fn_1() {
   |        ^^^^^^^^^^^^^^^^
...
LL |     fn unused_impl_fn_2(var: i32) {
   |        ^^^^^^^^^^^^^^^^
...
LL |     fn unused_impl_fn_3(var: i32) {
   |        ^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors