error: cannot find derive macro `FromPrimitive` in this scope --> $DIR/deriving-primitive.rs:1:10 | LL | #[derive(FromPrimitive)] | ^^^^^^^^^^^^^ error: cannot find derive macro `FromPrimitive` in this scope --> $DIR/deriving-primitive.rs:1:10 | LL | #[derive(FromPrimitive)] | ^^^^^^^^^^^^^ error: aborting due to 2 previous errors