1error[E0277]: the size for values of type `[u8]` cannot be known at compilation time 2 --> $DIR/wf-array-elem-sized.rs:7:10 3 | 4LL | foo: [[u8]], 5 | ^^^^^^ doesn't have a size known at compile-time 6 | 7 = help: the trait `Sized` is not implemented for `[u8]` 8 = note: slice and array elements must have `Sized` type 9 10error: aborting due to previous error 11 12For more information about this error, try `rustc --explain E0277`. 13