- Remove needless borrows on format!() in set_body_string() calls (needless_borrows_for_generic_args)
- Replace assert!(false, ...) with collected assertion (assertions_on_constants + never_loop)
- Use direct Method::POST comparison instead of to_string() (cmp_owned)
- Simplify negated equality to != operator (nonminimal_bool)
CI pipeline now passes with -D warnings enabled