- pareto/crowding.rs: rewrite the inner loop to iterate per-objective
via index_axis-style indexing on `oriented` rather than naming an
unused loop variable `k`.
- operators/{binary,permutation}.rs tests: pass parents via
`std::slice::from_ref` instead of `&[parent.clone()]` to avoid the
cloned_ref_to_slice_refs lint.
Pure cleanup — no behavior change, all 83 unit tests + 2 doctests still
pass.
swaits
e3f5d3eb7b