1 error: generic parameters must not be used inside of non trivial constant values
2 --> $DIR/simple_fail.rs:7:33
4 LL | type Arr<const N: usize> = [u8; N - 1];
5 | ^ non-trivial anonymous constants must not depend on the parameter `N`
7 = help: it is currently only allowed to use either `N` or `{ N }` as generic constants
9 error: aborting due to previous error