今天在联系vapor demo的时候
查看当前环境时，报了一下提示
✅ Xcode 9 is compatible with Vapor 2.
✅ Xcode 9 is compatible with Vapor 3.
2018-06-08 10:54:13.808 xcodebuild[91618:4860941] [MT] PluginLoading: Required plug-in compatibility UUID 426A087B-D3AA-431A-AFDF-F135EC00DE1C for plug-in at path \'~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/XAlign.xcplugin\' not present in DVTPlugInCompatibilityUUIDs
2018-06-08 10:54:13.809 xcodebuild[91618:4860941] [MT] PluginLoading: Required plug-in compatibility UUID 426A087B-D3AA-431A-AFDF-F135EC00DE1C for plug-in at path \'~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/VVDocumenter-Xcode.xcplugin\' not present in DVTPlugInCompatibilityUUIDs
✅ Swift 4.1 is compatible with Vapor 2.
✅ Swift 4.1 is compatible with Vapor 3.
查了一下，应该是xcode更新后导致两个插件过期，在网上搜到了以下解决办法
https://blog.csdn.net/sinat_26415011/article/details/52433516