[!] CDN: trunk Repo update failed
只想pod update失败
解决办法:
1. podfile文件中指定source源为master:
source 'https://github.com/CocoaPods/Specs.git'
2.执行pod repo remove trunk移除trunk源

只想pod update失败
source 'https://github.com/CocoaPods/Specs.git'
pod repo remove trunk移除trunk源