warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
  --> $DIR/forget_copy.rs:34:5
   |
LL |     forget(s1);
   |     ^^^^^^^--^
   |            |
   |            argument has type `SomeStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result
note: the lint level is defined here
  --> $DIR/forget_copy.rs:3:9
   |
LL | #![warn(forget_copy)]
   |         ^^^^^^^^^^^

warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
  --> $DIR/forget_copy.rs:35:5
   |
LL |     forget(s2);
   |     ^^^^^^^--^
   |            |
   |            argument has type `SomeStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result

warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
  --> $DIR/forget_copy.rs:36:5
   |
LL |     forget(s3);
   |     ^^^^^^^--^
   |            |
   |            argument has type `&SomeStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result
   = note: `#[warn(forget_ref)]` on by default

warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
  --> $DIR/forget_copy.rs:37:5
   |
LL |     forget(s4);
   |     ^^^^^^^--^
   |            |
   |            argument has type `SomeStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result

warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
  --> $DIR/forget_copy.rs:38:5
   |
LL |     forget(s5);
   |     ^^^^^^^--^
   |            |
   |            argument has type `&SomeStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result

warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
  --> $DIR/forget_copy.rs:50:5
   |
LL |     forget(a2);
   |     ^^^^^^^--^
   |            |
   |            argument has type `&AnotherStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result

warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
  --> $DIR/forget_copy.rs:52:5
   |
LL |     forget(a3);
   |     ^^^^^^^--^
   |            |
   |            argument has type `&AnotherStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result

warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
  --> $DIR/forget_copy.rs:53:5
   |
LL |     forget(a4);
   |     ^^^^^^^--^
   |            |
   |            argument has type `&AnotherStruct`
   |
   = note: use `let _ = ...` to ignore the expression or result

warning: 8 warnings emitted