message: test that minimal-versions errors on the same input as normal resolution
diff: @@ -33,6 +33,7 @@ proptest! {
  },
  .. ProptestConfig::default()
  })]
  +
  #[test]
  fn passes_validation(
  PrettyPrintRegistry(input) in registry_strategy(50, 20, 60)
  @@ -49,6 +50,56 @@ proptest! {
  );
  }
  }
  +
  + #[test]
  + fn minimum_version_errors_the_same(
  + PrettyPrintRegistry(input) in registry_strategy(50, 20, 60)
  + ) {
  + enable_nightly_features();
  +
  + let mut config = Config::default().unwrap();
  + config
  + .configure(
  + 1,
  + None,
  + &None,
  + false,
  + false,
  + &None,
  + &["minimal-versions".to_string()],
  + )
  + .unwrap();
  +
  + let reg = registry(input.clone());
  + // there is only a small chance that eny one
  + // crate will be interesting.
  + // So we try some of the most complicated.
  + for this in input.iter().rev().take(10) {
  + // minimal-versions change what order the candidates
  + // are tried but not the existence of a solution
  + let res = resolve(
  + &pkg_id("root"),
  + vec![dep_req(&this.name(), &format!("={}", this.version()))],
  + &reg,
  + );
  +
  + let mres = resolve_with_config(
  + &pkg_id("root"),
  + vec![dep_req(&this.name(), &format!("={}", this.version()))],
  + &reg,
  + Some(&config),
  + );
  +
  + prop_assert_eq!(
  + res.is_ok(),
  + mres.is_ok(),
  + "minimal-versions and regular resolver disagree about weather `{} = \"={}\"` can resolve",
  + this.name(),
  + this.version()
  + )
  + }
  + }
  +
  #[test]
  fn limited_independence_of_irrelevant_alternatives(
  PrettyPrintRegistry(input) in registry_strategy(50, 20, 60),
  