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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build CardStack, reference 1.0.0 (33417e), with Swift 6.0 for macOS (Xcode) using Xcode 16.0 on 4 Nov 2024 15:31:31 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme CardStack -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/notsobigcompany/CardStack.git
Reference: 1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/notsobigcompany/CardStack
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at 33417ef Updates demo
Cloned https://github.com/notsobigcompany/CardStack.git
Revision (git rev-parse @):
33417ef29fdc4169712cb3b8bf0ddbd7b6ef52c5
SUCCESS checkout https://github.com/notsobigcompany/CardStack.git at 1.0.0
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.0
Building package at path:  $PWD
https://github.com/notsobigcompany/CardStack.git
Command line invocation:
    /Applications/Xcode-16.1.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  CardStack: /Users/admin/builder/spi-builder-workspace
resolved source packages: CardStack
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CardStack",
  "name" : "CardStack",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "CardStack",
      "targets" : [
        "CardStack"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CardStack",
      "module_type" : "SwiftTarget",
      "name" : "CardStack",
      "path" : "Sources/CardStack",
      "product_memberships" : [
        "CardStack"
      ],
      "sources" : [
        "CardStack.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "CardStack"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme CardStack -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete
Command line invocation:
    /Applications/Xcode-16.1.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme CardStack -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete"
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete
Resolve Package Graph
Resolved source packages:
  CardStack: /Users/admin/builder/spi-builder-workspace
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'CardStack' in project 'CardStack'
        ➜ Explicit dependency on target 'CardStack' in project 'CardStack'
    Target 'CardStack' in project 'CardStack' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: ff57409f221bb76c2be7dacaa4aa29d6
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/ff57409f221bb76c2be7dacaa4aa29d6.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
ClangStatCache /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/CardStack.modulemap (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/CardStack.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/CardStack.DependencyMetadataFileList (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/CardStack.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-OutputFileMap.json (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.SwiftFileList (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.LinkFileList (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.LinkFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/CardStack.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/CardStack.modulemap (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/CardStack.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver CardStack normal arm64 com.apple.xcode.tools.swift.compiler (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name CardStack -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -enable-experimental-feature OpaqueTypeErasure -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -parse-as-library -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ CardStack (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-swiftTaskExecution -- /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.abi.json
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.abi.json
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:7:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var currentIndex: Double = 0.0
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:8:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var previousIndex: Double = 0.0
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:11:6: error: 'ViewBuilder' is only available in macOS 10.15 or newer
    @ViewBuilder private let content: (Data.Element) -> Content
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:12:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var finalCurrentIndex: Int
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:45: error: 'Binding' is only available in macOS 10.15 or newer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
                                            ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:12: note: add @available attribute to enclosing initializer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:75: error: 'ViewBuilder' is only available in macOS 10.15 or newer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
                                                                          ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:12: note: add @available attribute to enclosing initializer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:25:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:25:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:38:35: error: 'Gesture' is only available in macOS 10.15 or newer
    private var dragGesture: some Gesture {
                                  ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:38:17: note: add @available attribute to enclosing property
    private var dragGesture: some Gesture {
                ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:96: error: 'Identifiable' is only available in macOS 10.15 or newer
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
                                                                                               ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:119: error: 'View' is only available in macOS 10.15 or newer
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
                                                                                                                      ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:118:20: error: 'Color' is only available in macOS 10.15 or newer
        let color: Color
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:116:12: note: add @available attribute to enclosing struct
    struct DemoItem: Identifiable {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:126:10: error: 'State' is only available in macOS 10.15 or newer
        @State private var currentIndex = 0
         ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:127:10: error: 'State' is only available in macOS 10.15 or newer
        @State private var tappedIndex: Int? = nil
         ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:129:24: error: 'View' is only available in macOS 10.15 or newer
        var body: some View {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:129:13: note: add @available attribute to enclosing property
        var body: some View {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:167:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:167:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:114:8: note: add @available attribute to enclosing struct
struct CardStackView_Previews: PreviewProvider {
       ^
SwiftCompile normal arm64 Compiling\ CardStack.swift /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-swiftTaskExecution -- /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.dia -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-unit-output-path /CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -index-system-modules
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.dia -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-unit-output-path /CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -index-system-modules
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:0000FE00-8C151E3703BE51BE, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ CardStack (in target 'CardStack' from project 'CardStack')
	Building workspace spi-builder-workspace with scheme CardStack
(3 failures)
Command line invocation:
    /Applications/Xcode-16.1.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme CardStack -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete"
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete
Resolve Package Graph
Resolved source packages:
  CardStack: /Users/admin/builder/spi-builder-workspace
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'CardStack' in project 'CardStack'
        ➜ Explicit dependency on target 'CardStack' in project 'CardStack'
    Target 'CardStack' in project 'CardStack' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache
SwiftDriver CardStack normal arm64 com.apple.xcode.tools.swift.compiler (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name CardStack -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -enable-experimental-feature OpaqueTypeErasure -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -parse-as-library -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ CardStack (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-swiftTaskExecution -- /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.abi.json
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.abi.json
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:7:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var currentIndex: Double = 0.0
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:8:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var previousIndex: Double = 0.0
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:11:6: error: 'ViewBuilder' is only available in macOS 10.15 or newer
    @ViewBuilder private let content: (Data.Element) -> Content
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:12:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var finalCurrentIndex: Int
     ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:45: error: 'Binding' is only available in macOS 10.15 or newer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
                                            ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:12: note: add @available attribute to enclosing initializer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:75: error: 'ViewBuilder' is only available in macOS 10.15 or newer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
                                                                          ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:19:12: note: add @available attribute to enclosing initializer
    public init(_ data: Data, currentIndex: Binding<Int> = .constant(0), @ViewBuilder content: @escaping (Data.Element) -> Content) {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:25:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:25:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:38:35: error: 'Gesture' is only available in macOS 10.15 or newer
    private var dragGesture: some Gesture {
                                  ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:38:17: note: add @available attribute to enclosing property
    private var dragGesture: some Gesture {
                ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:96: error: 'Identifiable' is only available in macOS 10.15 or newer
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
                                                                                               ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:119: error: 'View' is only available in macOS 10.15 or newer
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
                                                                                                                      ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:6:15: note: add @available attribute to enclosing generic struct
public struct CardStack<Data, Content>: View where Data: RandomAccessCollection, Data.Element: Identifiable, Content: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:118:20: error: 'Color' is only available in macOS 10.15 or newer
        let color: Color
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:116:12: note: add @available attribute to enclosing struct
    struct DemoItem: Identifiable {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:126:10: error: 'State' is only available in macOS 10.15 or newer
        @State private var currentIndex = 0
         ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:127:10: error: 'State' is only available in macOS 10.15 or newer
        @State private var tappedIndex: Int? = nil
         ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:129:24: error: 'View' is only available in macOS 10.15 or newer
        var body: some View {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:129:13: note: add @available attribute to enclosing property
        var body: some View {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:125:12: note: add @available attribute to enclosing struct
    struct DemoView: View {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:167:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:167:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift:114:8: note: add @available attribute to enclosing struct
struct CardStackView_Previews: PreviewProvider {
       ^
SwiftCompile normal arm64 Compiling\ CardStack.swift /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-swiftTaskExecution -- /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.dia -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-unit-output-path /CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -index-system-modules
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.dia -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -enable-experimental-feature OpaqueTypeErasure -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.1-24B75-44d23fded74b714c58e69ec4af40d824.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name CardStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.1 -target-sdk-name macosx15.1 -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-unit-output-path /CardStack.build/Debug/CardStack.build/Objects-normal/arm64/CardStack.o -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -index-system-modules
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:0000FE00-8C151E3703BE51BE, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/CardStack/CardStack.swift (in target 'CardStack' from project 'CardStack')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ CardStack (in target 'CardStack' from project 'CardStack')
	Building workspace spi-builder-workspace with scheme CardStack
(3 failures)
BUILD FAILURE 6.0 macosXcodebuild