fn shuffle_jigsaw_indices_into(
template: &TemplateData,
priorities: &[i32],
rng: &mut LegacyRandom,
out: &mut Vec<usize>,
order_scratch: &mut Vec<usize>,
)fn shuffle_jigsaw_indices_into(
template: &TemplateData,
priorities: &[i32],
rng: &mut LegacyRandom,
out: &mut Vec<usize>,
order_scratch: &mut Vec<usize>,
)