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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 MasonryStack, reference main (95a722), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 27 Apr 2025 21:03:29 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme MasonryStack -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/lukepistrol/MasonryStack.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/lukepistrol/MasonryStack
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 95a7224 Update FUNDING.yml
Cloned https://github.com/lukepistrol/MasonryStack.git
Revision (git rev-parse @):
95a7224255c4392d9148b71a64ba73f3aca2b2e3
SUCCESS checkout https://github.com/lukepistrol/MasonryStack.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/lukepistrol/MasonryStack.git
https://github.com/lukepistrol/MasonryStack.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MasonryStack",
  "name" : "MasonryStack",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "MasonryStack",
      "targets" : [
        "MasonryStack"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MasonryStack",
      "module_type" : "SwiftTarget",
      "name" : "MasonryStack",
      "path" : "Sources/MasonryStack",
      "product_memberships" : [
        "MasonryStack"
      ],
      "sources" : [
        "MasonryHStack.swift",
        "MasonryVStack.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  MasonryStack: /Users/admin/builder/spi-builder-workspace
resolved source packages: MasonryStack
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MasonryStack",
  "name" : "MasonryStack",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "MasonryStack",
      "targets" : [
        "MasonryStack"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MasonryStack",
      "module_type" : "SwiftTarget",
      "name" : "MasonryStack",
      "path" : "Sources/MasonryStack",
      "product_memberships" : [
        "MasonryStack"
      ],
      "sources" : [
        "MasonryHStack.swift",
        "MasonryVStack.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "MasonryStack"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme MasonryStack -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.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 MasonryStack -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Resolve Package Graph
Resolved source packages:
  MasonryStack: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'MasonryStack' in project 'MasonryStack'
        ➜ Explicit dependency on target 'MasonryStack' in project 'MasonryStack'
    Target 'MasonryStack' in project 'MasonryStack' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 4d89a0ebe43efc21d192793c495fe768
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/4d89a0ebe43efc21d192793c495fe768.xcbuilddata
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-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
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/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
    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/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/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.DependencyStaticMetadataFileList (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.DependencyMetadataFileList (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.modulemap (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.SwiftFileList (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-OutputFileMap.json (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack_const_extract_protocols.json (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.SwiftConstValuesFileList (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.LinkFileList (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.LinkFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/MasonryStack.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.modulemap (in target 'MasonryStack' from project 'MasonryStack')
    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/MasonryStack.build/Debug/MasonryStack.build/MasonryStack.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver MasonryStack normal arm64 com.apple.xcode.tools.swift.compiler (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name MasonryStack -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.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 -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-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/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.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/MasonryStack.build/Debug/MasonryStack.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack_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/MasonryStack.build/Debug/MasonryStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.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/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ MasonryStack (in target 'MasonryStack' from project 'MasonryStack')
EmitSwiftModule normal arm64 (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:21:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:20:17: note: add @available attribute to enclosing instance method
    public func sizeThatFits(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:30:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:28:17: note: add @available attribute to enclosing instance method
    public func placeSubviews(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:40:22: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        in proposal: ProposedViewSize,
                     ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:38:18: note: add @available attribute to enclosing instance method
    private func calculateSize(
                 ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:81:41: error: 'LayoutProperties' is only available in macOS 13.0 or newer
    public static var layoutProperties: LayoutProperties {
                                        ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:81:23: note: add @available attribute to enclosing static property
    public static var layoutProperties: LayoutProperties {
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:21:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:20:17: note: add @available attribute to enclosing instance method
    public func sizeThatFits(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:30:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:28:17: note: add @available attribute to enclosing instance method
    public func placeSubviews(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:40:22: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        in proposal: ProposedViewSize,
                     ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:38:18: note: add @available attribute to enclosing instance method
    private func calculateSize(
                 ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:81:41: error: 'LayoutProperties' is only available in macOS 13.0 or newer
    public static var layoutProperties: LayoutProperties {
                                        ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:81:23: note: add @available attribute to enclosing static property
    public static var layoutProperties: LayoutProperties {
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
Failed frontend command:
/Applications/Xcode-16.3.0.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/MasonryStack/MasonryHStack.swift /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.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/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack_const_extract_protocols.json -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -enable-experimental-feature DebugDescriptionMacro -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.3.0.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-16.3.0.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 -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.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/MasonryStack.build/Debug/MasonryStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name MasonryStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.4 -target-sdk-name macosx15.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.3.0.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/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-master-emit-module.d -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.abi.json
SwiftCompile normal arm64 Compiling\ MasonryVStack.swift /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift (in target 'MasonryStack' from project 'MasonryStack')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ MasonryHStack.swift /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift (in target 'MasonryStack' from project 'MasonryStack')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	EmitSwiftModule normal arm64 (in target 'MasonryStack' from project 'MasonryStack')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ MasonryStack (in target 'MasonryStack' from project 'MasonryStack')
	Building workspace spi-builder-workspace with scheme MasonryStack
(3 failures)
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  MasonryStack: /Users/admin/builder/spi-builder-workspace
resolved source packages: MasonryStack
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MasonryStack",
  "name" : "MasonryStack",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "MasonryStack",
      "targets" : [
        "MasonryStack"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MasonryStack",
      "module_type" : "SwiftTarget",
      "name" : "MasonryStack",
      "path" : "Sources/MasonryStack",
      "product_memberships" : [
        "MasonryStack"
      ],
      "sources" : [
        "MasonryHStack.swift",
        "MasonryVStack.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "MasonryStack"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme MasonryStack -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-16.3.0.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 MasonryStack -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  MasonryStack: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'MasonryStack' in project 'MasonryStack'
        ➜ Explicit dependency on target 'MasonryStack' in project 'MasonryStack'
    Target 'MasonryStack' in project 'MasonryStack' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 18bcb5286fc440bc1877488bb45868c9
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/18bcb5286fc440bc1877488bb45868c9.xcbuilddata
ClangStatCache /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
SwiftDriver MasonryStack normal arm64 com.apple.xcode.tools.swift.compiler (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name MasonryStack -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DXcode -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.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 -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-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/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.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/MasonryStack.build/Debug/MasonryStack.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack_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/MasonryStack.build/Debug/MasonryStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.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/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ MasonryStack (in target 'MasonryStack' from project 'MasonryStack')
EmitSwiftModule normal arm64 (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:21:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:20:17: note: add @available attribute to enclosing instance method
    public func sizeThatFits(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:30:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:28:17: note: add @available attribute to enclosing instance method
    public func placeSubviews(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:40:22: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        in proposal: ProposedViewSize,
                     ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:38:18: note: add @available attribute to enclosing instance method
    private func calculateSize(
                 ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:81:41: error: 'LayoutProperties' is only available in macOS 13.0 or newer
    public static var layoutProperties: LayoutProperties {
                                        ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:81:23: note: add @available attribute to enclosing static property
    public static var layoutProperties: LayoutProperties {
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryHStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:21:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:20:17: note: add @available attribute to enclosing instance method
    public func sizeThatFits(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:30:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        proposal: ProposedViewSize,
                  ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:28:17: note: add @available attribute to enclosing instance method
    public func placeSubviews(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:40:22: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
        in proposal: ProposedViewSize,
                     ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:38:18: note: add @available attribute to enclosing instance method
    private func calculateSize(
                 ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:81:41: error: 'LayoutProperties' is only available in macOS 13.0 or newer
    public static var layoutProperties: LayoutProperties {
                                        ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:81:23: note: add @available attribute to enclosing static property
    public static var layoutProperties: LayoutProperties {
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:10:15: note: add @available attribute to enclosing struct
public struct MasonryVStack: Layout {
              ^
Failed frontend command:
/Applications/Xcode-16.3.0.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/MasonryStack/MasonryHStack.swift /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.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 -Onone -D SWIFT_PACKAGE -D DEBUG -D Xcode -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -plugin-path /Applications/Xcode-16.3.0.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-16.3.0.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 -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.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/MasonryStack.build/Debug/MasonryStack.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name MasonryStack -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.4 -target-sdk-name macosx15.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.3.0.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/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack-master-emit-module.d -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack.build/Objects-normal/arm64/MasonryStack.abi.json
SwiftCompile normal arm64 Compiling\ MasonryVStack.swift /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift (in target 'MasonryStack' from project 'MasonryStack')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ MasonryHStack.swift /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift (in target 'MasonryStack' from project 'MasonryStack')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift (in target 'MasonryStack' from project 'MasonryStack')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:9b2cb713c1a3d1c95448fc269434f8d5764a307c, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	EmitSwiftModule normal arm64 (in target 'MasonryStack' from project 'MasonryStack')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ MasonryStack (in target 'MasonryStack' from project 'MasonryStack')
	Building workspace spi-builder-workspace with scheme MasonryStack
(3 failures)
BUILD FAILURE 6.1 macosXcodebuild