[SymfonyComponentFilesystemExceptionIOException]
  Failed to remove file "/project/var/cache/de~/pools/ORsqbHaOKl/L/K/iZULk48B-k00dzIKC2qg": unlink(/project/var/cache/de~/pools/ORsqbHaOKl/L/K/iZULk48B-k00dzIKC2qg): Permission denied.

Failed to create "/project/var/cache/dev/tcpdf": mkdir(): Permission denied.

Warning: rename(C:projectvarcacheprod/doctrine/orm/Proxies__CG__AppBundleEntitySomeEntity.php.5a142ad84e8464.47105642,C:projectvarcacheprod/doctrine/orm/Proxies__CG__AppBundleEntitySomeEntity.php): Access is denied. (code: 5)

$tmpFileName = $fileName . '.' . uniqid('', true);
    file_put_contents($tmpFileName, $proxyCode);
    @chmod($tmpFileName, 0664);
    rename($tmpFileName, $fileName);
}