   case .listTests:
     print("#\(config.delim)Test\(config.delim)[Tags]")
     for (index, t) in config.tests {
-    let testDescription = [String(index), t.name, t.tags.sorted().description]
-      .joined(separator: config.delim)
-    print(testDescription)
+      let testDescription = [index, t.name, t.tags.sorted().description]
+        .joined(separator: config.delim)
+      print(testDescription)
     }
   case .run:
     runBenchmarks(config)

  ///
  /// - Parameters:
  ///   - registeredBenchmarks: List of all performance tests to be filtered.
  ///   - specifiedTests: List of explicitly specified tests to run. These can be
  ///     specified either by a test name or a test number.
  ///   - tags: Run tests tagged with all of these categories.
  ///   - skipTags: Don't run tests tagged with any of these categories.
  /// - Returns: An array of test number and benchmark info tuples satisfying

  // the platform and we should skip it.
  guard let testFn = test.runFunction else {
    if c.verbose {
      print("Skipping unsupported benchmark \(test.name)!")
    }
    return nil
  }
