TryInto is already implemented for slices in 1.47, so `let foo = u16::from_be_bytes(some_slice.try_into().unwrap());` would work before 1.48.

This trait wasn't implemented for vectors though, so you would have to write `let foo = u16::from_be_bytes(some_vec.to_slice().try_into().unwrap());`.

With new release you can drop `to_slice()` part. Nothing earth-shattering, but makes sense.