error: usage of `mem::forget` on `Drop` type
  --> $DIR/mem_forget.rs:14:5
   |
LL |     memstuff::forget(six);
   |     ^^^^^^^^^^^^^^^^^^^^^
   |
note: argument has type `std::sync::Arc<i32>`
  --> $DIR/mem_forget.rs:14:22
   |
LL |     memstuff::forget(six);
   |                      ^^^
   = note: `-D clippy::mem-forget` implied by `-D warnings`

error: usage of `mem::forget` on `Drop` type
  --> $DIR/mem_forget.rs:17:5
   |
LL |     std::mem::forget(seven);
   |     ^^^^^^^^^^^^^^^^^^^^^^^
   |
note: argument has type `std::rc::Rc<i32>`
  --> $DIR/mem_forget.rs:17:22
   |
LL |     std::mem::forget(seven);
   |                      ^^^^^

error: usage of `mem::forget` on `Drop` type
  --> $DIR/mem_forget.rs:20:5
   |
LL |     forgetSomething(eight);
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
note: argument has type `std::vec::Vec<i32>`
  --> $DIR/mem_forget.rs:20:21
   |
LL |     forgetSomething(eight);
   |                     ^^^^^

error: usage of `mem::forget` on type with `Drop` fields
  --> $DIR/mem_forget.rs:23:5
   |
LL |     std::mem::forget(string);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: argument has type `std::string::String`
  --> $DIR/mem_forget.rs:23:22
   |
LL |     std::mem::forget(string);
   |                      ^^^^^^

error: aborting due to 4 previous errors