后台安装包安装不上？

Installs: ckeditor/ckeditor:4.9.2, summerblue/administrator:v1.1.8
  - Installing ckeditor/ckeditor (4.9.2): Reading /home/vagrant/.composer/cache/files/ckeditor/ckeditor/a985551a8d6427024cc254349a1597414a89168e.zip from cache
Loading from cache
 Extracting archiveExecuting command (CWD): unzip -qq '/home/vagrant/Code/larabbs2/vendor/ckeditor/ckeditor/f003b91b1576bbadb2710809e153b9cf.zip' -d '/home/vagrant/Code/larabbs2/vendor/composer/819a77fb' && chmod -R u+w '/home/vagrant/Code/larabbs2/vendor/composer/819a77fb'

一直卡在这了。。无语了都。。。