Composer 使用 https://packagist.laravel-china.org 镜像 出现权限问题

vagrant@homestead:~/Code/larabbs$ composer require "overtrue/laravel-lang:~3.0"
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
file_put_contents(/home/vagrant/.composer/cache/repo/https---packagist.laravel-china.org/provider-illuminate$console.json): failed to open stream: Permission denied
https://packagist.laravel-china.org could not be fully loaded, package information was loaded from the local cache and may be out of date
^C
vagrant@homestead:~/Code/larabbs$

经测试 安装所有包均出现 这个问题 ，你们有出现吗?