What is wrong with composer in this case?

Question

Composer

{
    "require-dev": {
      "phpunit/phpunit": "5.0.*",
        "squizlabs/php_codesniffer": "2.*",
        "doctrine/dbal": "v2.3.5",
        "facebook/webdriver" : "*",
        "phing/phing": "2.*"
    },
    "autoload": {
        "psr-4": { 
            "popp\\": ["src/"],
            "popp\\tools\\": ["toolsrc/"],
            "popp\\test\\": ["test/"] 
        }
    }

}

Answer 1

rm composer.lock
php composer.phar install