Build operation failed without specifying any errors

Build operation failed without specifying any errors. Individual build tasks may have failed for unknown reasons.

One possible cause is if there are too many (possibly zombie) processes; in this case, rebooting may fix the problem.

Some individual build task failures (up to 12) may be listed below.

如果你也出现了这种错误！！！！

是否：xcode8.3 、cocoapods 1.3.1

请降级cocoapods 1.3.1 ---->1.2.1

降级的方法：sudo gem uninstall cocoapods -v 1.3.1，若出现提示，y就是了。

然后重新安装cocoapods1.2.1，：gem install cocoapods -v 1.2.1

友情提示：：：若使用了比较大的三方库，而且你的网速像蜗牛一样，祝君好运！！

提问：：：如何将私有库做本地缓存，因为cocospods下载时，太tm low了？？？？？？？？？？？？？？？？？？？？？？

安装好之后，就可以编译成功了。