message: Add test for listing builtin aliases
  Added a test that checks that the aliases that currently
  are builtin with cargo are indeed being printed with the rest
  of the commands when `cargo --list` is called.
  Closes
diff: @@ -78,6 +78,17 @@ fn list_commands_with_descriptions() {
  .run();
  }
  +#[cargo_test]
  +fn list_aliases_with_descriptions() {
  + let p = project().build();
  + p.cargo("--list")
  + .with_stdout_contains(" b alias: build")
  + .with_stdout_contains(" c alias: check")
  + .with_stdout_contains(" r alias: run")
  + .with_stdout_contains(" t alias: test")
  + .run();
  +}
  +
  #[cargo_test]
  fn list_command_looks_at_path() {
  let proj = project().build();
  