"${dir.absolutePath}:\n ${relativePaths.joinToString("\n ")}"
            }
            val errorMessage = "Found non-empty test files dir:\n$nonEmptyDirs"
            if (reportOnly.get()) {
                println(errorMessage)
            } else {
                throw GradleException(errorMessage)
            }
        }
    }

    /**

func newErrorMessage(errorCode, errorMessage []byte) []byte {
	buf := new(bytes.Buffer)

	buf.Write([]byte{13, ':', 'm', 'e', 's', 's', 'a', 'g', 'e', '-', 't', 'y', 'p', 'e', 7, 0, 5, 'e', 'r', 'r', 'o', 'r'})

	buf.Write([]byte{14, ':', 'e', 'r', 'r', 'o', 'r', '-', 'm', 'e', 's', 's', 'a', 'g', 'e', 7})
	binary.Write(buf, binary.BigEndian, uint16(len(errorMessage)))
	buf.Write(errorMessage)

      AbstractFuture<String> future = new AbstractFuture<String>() {};
      AtomicReference<String> errorMessage = Atomics.newReference();
      executor.execute(
          new Runnable() {
            @Override
            public void run() {
              future.set("success");
              if (!future.isDone()) {
                errorMessage.set("Set call exited before future was complete.");
              }
            }

      AbstractFuture<String> future = new AbstractFuture<String>() {};
      AtomicReference<String> errorMessage = Atomics.newReference();
      executor.execute(
          new Runnable() {
            @Override
            public void run() {
              future.set("success");
              if (!future.isDone()) {
                errorMessage.set("Set call exited before future was complete.");
              }
            }

    try {
      new NullPointerTester().testMethod(bar, method);
    } catch (AssertionError incorrectError) {
      String errorMessage =
          rootLocaleFormat("Should not have flagged method %s for %s", method.getName(), bar);
      assertWithMessage(errorMessage).that(incorrectError).isNull();
    }
  }

  public void verifyBarFail(Method method, TwoArg bar) {
    try {