src/Console/Application.php
public function doRun(InputInterface $input, OutputInterface $output)
    {
        $stdErr = $output instanceof ConsoleOutputInterface
            ? $output->getErrorOutput()
            : ($input->hasParameterOption('--format', true) && 'txt' !== $input->getParameterOption('--format', null, true) ? null : $output)
        ;
        if (null !== $stdErr) {
            $warningsDetector = new WarningsDetector($this->toolInfo);
            $warningsDetector->detectOldVendor();
            $warningsDetector->detectOldMajor();
            foreach ($warningsDetector->getWarnings() as $warning) {
                $stdErr->writeln(sprintf($stdErr->isDecorated() ? '<bg=yellow;fg=black;>%s</>' : '%s', $warning));
            }
        }

        return parent::doRun($input, $output);
    }
public function doRun(InputInterface $input, OutputInterface $output)
    {
        $stdErr = $output instanceof ConsoleOutputInterface
            ? $output->getErrorOutput()
            : ($input->hasParameterOption('--format', true) && 'txt' !== $input->getParameterOption('--format', null, true) ? null : $output)
        ;
        if (null !== $stdErr) {
            $warningsDetector = new WarningsDetector($this->toolInfo);
            $warningsDetector->detectOldVendor();
            $warningsDetector->detectOldMajor();
            foreach ($warningsDetector->getWarnings() as $warning) {
                $stdErr->writeln(sprintf($stdErr->isDecorated() ? '<bg=yellow;fg=black;>%s</>' : '%s', $warning));
            }
        }

        return parent::doRun($input, $output);
    }
{@inheritdoc}