composer require overtrue / wechat 安装异常？

Homestead 环境下，安装报错

$ composer require overtrue/wechat:~5.0 -vvv
...
Installation failed, reverting ./composer.json to its original content.
[RuntimeException]
  Could not delete /home/vagrant/code/summer/vendor/easywechat-composer/easywechat-composer/src/Commands:
...

vendor/easywechat-composer/easywechat-composer/src/Commands 这个目录是正常存在的，为什么会有这个报错呢