According to [the docs](https://doc.rust-lang.org/stable/std/mem/fn.uninitialized.html),
> Calling this when the content is not yet fully initialized causes immediate undefined behavior.
> it [is] undefined behavior to have uninitialized data in a variable even if that variable has an integer type.
Using MaybeUninit instead, as recommended by the official documentation, avoids undefined behavior by not creating a `&mut` reference to uninitialized data.
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