升级Xcode10，直接跑之前的项目会出问题，

:-1: Multiple commands produce '/Users/.../Library/Developer/Xcode/DerivedData/.../Build/Products/Dev-iphonesimulator/TLYShyNavBar/TLYShyNavBar.framework/Info.plist':
1) Target 'TLYShyNavBar' has copy command from '/Users/.../Desktop/Workspace/iOS/.../Pods/TLYShyNavBar/TLYShyNavBar/Info.plist' to '/Users/.../Library/Developer/Xcode/DerivedData/.../Build/Products/Dev-iphonesimulator/TLYShyNavBar/TLYShyNavBar.framework/Info.plist'
2) Target 'TLYShyNavBar' has process command with input '/Users/.../Desktop/Workspace/iOS/.../Pods/Target Support Files/TLYShyNavBar/Info.plist'

I found the solution for this build error, for anybody else having the same issue with Xcode 10 build system, follow the following steps to fix it:

1. In Xcode, go to File->Project/Workspace settings.
2. Change the build system to Legacy Build system.

It will resolve the build issue with the new Xcode 10.

If you want to work with the new build system, then you can find the troubleshooting help from this apple Xcode help page.

Edit:

I was able to resolve the issue with the new Xcode build system by removing the duplicate info.plist from the Pod by following steps:

Solution - Open target > Build phase > Copy Bundle Resource/Compile Sources > removed info.plist from here

问题2：：
Images.xcassets: Failed to launch IBCocoaTouchImageCatalogTool via CoreSimulator spawn
直接删掉文件夹暂时可以解决

原文：：：
https://stackoverflow.com/questions/51071090/multiple-commands-produced-error-xcode-10