-$varDumperTestTrait->assertDumpEquals($dump, $data, $message = "");
+$varDumperTestTrait->assertDumpEquals($dump, $data, $filter = 0, $message = "");

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Symfony\Symfony40\Rector\MethodCall\VarDumperTestTraitMethodArgsRector;

return RectorConfig::configure()
    ->withRules([
        VarDumperTestTraitMethodArgsRector::class,
    ]);

SETS:  symfony/symfony 4.0 symfony/var-dumper 4.0