error: usage of mem::forget on Drop type --> mem_forget.rs:18:5 | 18 | memstuff::forget(six); | ^^^^^^^^^^^^^^^^^^^^^ | = note: `-D mem-forget` implied by `-D warnings` error: usage of mem::forget on Drop type --> mem_forget.rs:21:5 | 21 | std::mem::forget(seven); | ^^^^^^^^^^^^^^^^^^^^^^^ error: usage of mem::forget on Drop type --> mem_forget.rs:24:5 | 24 | forgetSomething(eight); | ^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 3 previous errors To learn more, run the command again with --verbose.