As suggested [here](https://github.com/Amanieu/hashmap_core/pull/10#issuecomment-455866083). This also allows us to re-enable the basic compile fuzz target.
As suggested [here](https://github.com/Amanieu/hashmap_core/pull/10#issuecomment-455866083). This also allows us to re-enable the basic compile fuzz target.