Hello , I would like to have your help.
I create new xcode project ,then switch toolchain to Swift 5.3 Release 2020-09-16 (a) and build the project.
but can't build the project
i didn't change any thing ,just switch toolchain
My environment
MacBook Air M1
Xcode Version 13.3.1 (13E500a)
Deployment Info iOS 15.4
Toolchain: Swift 5.3 Release 2020-09-16 (a)
Swift Compiler Error
CompileSwift normal arm64 /Users/chencatmail/workspace/yipapp/testSwfit/testSwfit/AppDelegate.swift (in target 'testSwfit' from project 'testSwfit')
cd /Users/chencatmail/workspace/yipapp/testSwfit
/Library/Developer/Toolchains/swift-5.3-RELEASE.xctoolchain/usr/bin/swift -frontend -c /Users/chencatmail/workspace/yipapp/testSwfit/testSwfit/ViewController.swift -primary-file /Users/chencatmail/workspace/yipapp/testSwfit/testSwfit/AppDelegate.swift /Users/chencatmail/workspace/yipapp/testSwfit/testSwfit/SceneDelegate.swift -emit-module-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/Objects-normal/arm64/AppDelegate\~partial.swiftmodule -emit-module-doc-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/Objects-normal/arm64/AppDelegate\~partial.swiftdoc -emit-module-source-info-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/Objects-normal/arm64/AppDelegate\~partial.swiftsourceinfo -serialize-diagnostics-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/Objects-normal/arm64/AppDelegate.dia -emit-dependencies-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/Objects-normal/arm64/AppDelegate.d -emit-reference-dependencies-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/Objects-normal/arm64/AppDelegate.swiftdeps -target arm64-apple-ios15.4-simulator -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.4.sdk -I /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Products/Debug-iphonesimulator -F /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Products/Debug-iphonesimulator -enable-testing -g -module-cache-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -Onone -D DEBUG -serialize-debugging-options -Xcc -working-directory -Xcc /Users/chencatmail/workspace/yipapp/testSwfit -enable-anonymous-context-mangled-names -Xcc -I/Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/testSwfit-generated-files.hmap -Xcc -I/Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/testSwfit-own-target-headers.hmap -Xcc -I/Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/testSwfit-all-target-headers.hmap -Xcc -iquote -Xcc /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/testSwfit-project-headers.hmap -Xcc -I/Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Products/Debug-iphonesimulator/include -Xcc -I/Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/DerivedSources-normal/arm64 -Xcc -I/Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/DerivedSources/arm64 -Xcc -I/Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/DerivedSources -Xcc -DDEBUG\=1 -target-sdk-version 15.4 -module-name testSwfit -o /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Build/Intermediates.noindex/testSwfit.build/Debug-iphonesimulator/testSwfit.build/Objects-normal/arm64/AppDelegate.o -index-store-path /Users/chencatmail/Library/Developer/Xcode/DerivedData/testSwfit-cjrfwfswvqwoovaupycyjmmuwatj/Index/DataStore -index-system-modules
Command CompileSwift failed with a nonzero exit code
Any recommendations?
Thank you!