message: implement clippy suggestion to remove redundant `clone`
diff: @@ -234,7 +234,7 @@ fn pub_fail() {
  pkg!(("e", "0.0.6") => [dep_req_kind("a", "<= 0.0.4", Kind::Normal, true),]),
  pkg!(("kB", "0.0.3") => [dep_req("a", ">= 0.0.5"),dep("e"),]),
  ];
  - let reg = registry(input.clone());
  + let reg = registry(input);
  assert!(resolve_and_validated(vec![dep("kB")], &reg, None).is_err());
  }
  