`#![feature(never_type)]` triggers `clippy::empty_enums`

The following code:

```rust
#![feature(never_type)]
#![warn(clippy::empty_enums)]

#[derive(zerocopy::FromBytes)] pub struct Foo(());
```

triggers the `clippy::empty_enums` lint, which is part of the `clippy::pedantic` group. With the never type now nearing stabilization (https://github.com/rust-lang/rust/pull/155499), it would be nice to have this sorted out reasonably soon.