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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 HorizonDefaults, reference master (ca7fdd), with Swift 6.1 for iOS using Xcode 16.3 on 29 Apr 2025 18:17:17 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HorizonDefaults -destination generic/platform=iOS

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Sam-Spencer/HorizonDefaults.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Sam-Spencer/HorizonDefaults
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at ca7fddf Fix macOS build, logging, and Swift 6
Cloned https://github.com/Sam-Spencer/HorizonDefaults.git
Revision (git rev-parse @):
ca7fddfa79d4001b02697665d5fc24aa92111ede
SUCCESS checkout https://github.com/Sam-Spencer/HorizonDefaults.git at master
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/Sam-Spencer/HorizonDefaults.git
https://github.com/Sam-Spencer/HorizonDefaults.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "HorizonDefaults",
  "name" : "HorizonDefaults",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    }
  ],
  "products" : [
    {
      "name" : "HorizonDefaults",
      "targets" : [
        "HorizonDefaults"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HorizonDefaultsTests",
      "module_type" : "SwiftTarget",
      "name" : "HorizonDefaultsTests",
      "path" : "Tests/HorizonDefaultsTests",
      "sources" : [
        "HorizonDefaultsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "HorizonDefaults"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HorizonDefaults",
      "module_type" : "SwiftTarget",
      "name" : "HorizonDefaults",
      "path" : "Sources/HorizonDefaults",
      "product_memberships" : [
        "HorizonDefaults"
      ],
      "sources" : [
        "HorizonDefaults.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
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:
  HorizonDefaults: /Users/admin/builder/spi-builder-workspace
resolved source packages: HorizonDefaults
{
  "dependencies" : [
  ],
  "manifest_display_name" : "HorizonDefaults",
  "name" : "HorizonDefaults",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    }
  ],
  "products" : [
    {
      "name" : "HorizonDefaults",
      "targets" : [
        "HorizonDefaults"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HorizonDefaultsTests",
      "module_type" : "SwiftTarget",
      "name" : "HorizonDefaultsTests",
      "path" : "Tests/HorizonDefaultsTests",
      "sources" : [
        "HorizonDefaultsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "HorizonDefaults"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HorizonDefaults",
      "module_type" : "SwiftTarget",
      "name" : "HorizonDefaults",
      "path" : "Sources/HorizonDefaults",
      "product_memberships" : [
        "HorizonDefaults"
      ],
      "sources" : [
        "HorizonDefaults.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "HorizonDefaults"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HorizonDefaults -destination generic/platform=iOS 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 HorizonDefaults -destination generic/platform=iOS "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:
  HorizonDefaults: /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 'HorizonDefaults' in project 'HorizonDefaults'
        ➜ Explicit dependency on target 'HorizonDefaults' in project 'HorizonDefaults'
    Target 'HorizonDefaults' in project 'HorizonDefaults' (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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.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: 6dea072d47c9e59159669fd316ec3377
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/6dea072d47c9e59159669fd316ec3377.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
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
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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-iphoneos
    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-iphoneos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.DependencyMetadataFileList (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.DependencyStaticMetadataFileList (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.modulemap (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.SwiftFileList (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-OutputFileMap.json (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults_const_extract_protocols.json (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.SwiftConstValuesFileList (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.LinkFileList (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.LinkFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos/HorizonDefaults.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.modulemap (in target 'HorizonDefaults' from project 'HorizonDefaults')
    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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/HorizonDefaults.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos
SwiftDriver HorizonDefaults normal arm64 com.apple.xcode.tools.swift.compiler (in target 'HorizonDefaults' from project 'HorizonDefaults')
    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 HorizonDefaults -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk -target arm64-apple-ios12.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -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-iphoneos -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk/Developer/Library/Frameworks -parse-as-library -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ HorizonDefaults (in target 'HorizonDefaults' from project 'HorizonDefaults')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:21:33: error: 'Logger' is only available in iOS 14.0 or newer
    private static let logger = Logger(subsystem: "HorizonDefaults", category: "default")
                                ^
/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:21:24: note: add @available attribute to enclosing static property
    private static let logger = Logger(subsystem: "HorizonDefaults", category: "default")
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:25:23: warning: static property 'standard' is not concurrency-safe because non-'Sendable' type 'HorizonDefaults' may have shared mutable state; this is an error in the Swift 6 language mode
    public static let standard: HorizonDefaults = HorizonDefaults()
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:14:14: note: class 'HorizonDefaults' does not conform to the 'Sendable' protocol
public class HorizonDefaults: NSObject {
             ^
/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:25:23: note: add '@MainActor' to make static property 'standard' part of global actor 'MainActor'
    public static let standard: HorizonDefaults = HorizonDefaults()
                      ^
    @MainActor
/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:25:23: note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
    public static let standard: HorizonDefaults = HorizonDefaults()
                      ^
    nonisolated(unsafe)
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/HorizonDefaults/HorizonDefaults.swift -target arm64-apple-ios12.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk/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 -profile-generate -profile-coverage-mapping -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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults_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/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name HorizonDefaults -frontend-parseable-output -disable-clang-spi -target-sdk-version 18.4 -target-sdk-name iphoneos18.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.abi.json
SwiftCompile normal arm64 Compiling\ HorizonDefaults.swift /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ HorizonDefaults (in target 'HorizonDefaults' from project 'HorizonDefaults')
	Building workspace spi-builder-workspace with scheme HorizonDefaults
(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:
  HorizonDefaults: /Users/admin/builder/spi-builder-workspace
resolved source packages: HorizonDefaults
{
  "dependencies" : [
  ],
  "manifest_display_name" : "HorizonDefaults",
  "name" : "HorizonDefaults",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    }
  ],
  "products" : [
    {
      "name" : "HorizonDefaults",
      "targets" : [
        "HorizonDefaults"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HorizonDefaultsTests",
      "module_type" : "SwiftTarget",
      "name" : "HorizonDefaultsTests",
      "path" : "Tests/HorizonDefaultsTests",
      "sources" : [
        "HorizonDefaultsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "HorizonDefaults"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HorizonDefaults",
      "module_type" : "SwiftTarget",
      "name" : "HorizonDefaults",
      "path" : "Sources/HorizonDefaults",
      "product_memberships" : [
        "HorizonDefaults"
      ],
      "sources" : [
        "HorizonDefaults.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "HorizonDefaults"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HorizonDefaults -destination generic/platform=iOS
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 HorizonDefaults -destination generic/platform=iOS
Resolve Package Graph
Resolved source packages:
  HorizonDefaults: /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 'HorizonDefaults' in project 'HorizonDefaults'
        ➜ Explicit dependency on target 'HorizonDefaults' in project 'HorizonDefaults'
    Target 'HorizonDefaults' in project 'HorizonDefaults' (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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.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: 23c67b1214f02d28b321d447216df0f2
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/23c67b1214f02d28b321d447216df0f2.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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.sdkstatcache
SwiftDriver HorizonDefaults normal arm64 com.apple.xcode.tools.swift.compiler (in target 'HorizonDefaults' from project 'HorizonDefaults')
    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 HorizonDefaults -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk -target arm64-apple-ios12.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -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-iphoneos -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk/Developer/Library/Frameworks -parse-as-library -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ HorizonDefaults (in target 'HorizonDefaults' from project 'HorizonDefaults')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:21:33: error: 'Logger' is only available in iOS 14.0 or newer
    private static let logger = Logger(subsystem: "HorizonDefaults", category: "default")
                                ^
/Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift:21:24: note: add @available attribute to enclosing static property
    private static let logger = Logger(subsystem: "HorizonDefaults", category: "default")
                       ^
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/HorizonDefaults/HorizonDefaults.swift -target arm64-apple-ios12.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.sdk/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 -profile-generate -profile-coverage-mapping -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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults_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/iphoneos18.4-22E235-339d34bc69d7fc736c3220795c36f340.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name HorizonDefaults -frontend-parseable-output -disable-clang-spi -target-sdk-version 18.4 -target-sdk-name iphoneos18.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/iPhoneOS.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/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HorizonDefaults.build/Debug-iphoneos/HorizonDefaults.build/Objects-normal/arm64/HorizonDefaults.abi.json
SwiftCompile normal arm64 Compiling\ HorizonDefaults.swift /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HorizonDefaults/HorizonDefaults.swift (in target 'HorizonDefaults' from project 'HorizonDefaults')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ HorizonDefaults (in target 'HorizonDefaults' from project 'HorizonDefaults')
	Building workspace spi-builder-workspace with scheme HorizonDefaults
(3 failures)
BUILD FAILURE 6.1 iOS