How to convert a Box<[u8]> into a Box<MyDST>?

[TheButlah]

I know that I can do MyDST::try_ref_from_bytes(&box), but this gives a &MySlice. I'd like something that lets me actually get an owned version of this as a Box, is it possible?

I'd really like to avoid having to reach for self-referential types via something like ouroboros.

I figured maybe I could let v: Box<MyDST> = try_transmute!(box).unwrap(), but that didn't work.