message: add Install to all_modes
diff: @@ -182,7 +182,7 @@ impl CompileMode {
  /// List of all modes (currently used by `cargo clean -p` for computing
  /// all possible outputs).
  pub fn all_modes() -> &'static [CompileMode] {
  - static ALL: [CompileMode; 9] = [
  + static ALL: [CompileMode; 10] = [
  CompileMode::Test,
  CompileMode::Build,
  CompileMode::Check { test: true },
  @@ -191,6 +191,7 @@ impl CompileMode {
  CompileMode::Doc { deps: true },
  CompileMode::Doc { deps: false },
  CompileMode::Doctest,
  + CompileMode::Install,
  CompileMode::RunCustomBuild,
  ];
  &ALL
  