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Build Information

Successful build of CXXQueue, reference main (6fa7bc), with Swift 6.4 for macOS (Xcode) using Xcode 27.0 on 26 Sep 2026 16:43:19 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme CXXQueue -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/sbooth/CXXQueue.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/sbooth/CXXQueue
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 6fa7bc6 Improve variable naming (#13)
Cloned https://github.com/sbooth/CXXQueue.git
Revision (git rev-parse @):
6fa7bc663e56abc748cd4205818f1b9b5aaf041a
SUCCESS checkout https://github.com/sbooth/CXXQueue.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.4
Building package at path:  $PWD
https://github.com/sbooth/CXXQueue.git
Command line invocation:
    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  CXXQueue: /Users/admin/builder/spi-builder-workspace
resolved source packages: CXXQueue
2026-09-26 12:42:36.543 xcodebuild[563:3056] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "cxx_language_standard" : "c++20",
  "dependencies" : [
  ],
  "manifest_display_name" : "CXXQueue",
  "name" : "CXXQueue",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "CXXQueue",
      "targets" : [
        "CXXQueue"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CXXQueueTests",
      "module_type" : "SwiftTarget",
      "name" : "CXXQueueTests",
      "path" : "Tests/CXXQueueTests",
      "sources" : [
        "CXXQueueTests.swift"
      ],
      "target_dependencies" : [
        "CXXQueue"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CXXQueue",
      "module_type" : "ClangTarget",
      "name" : "CXXQueue",
      "path" : "Sources/CXXQueue",
      "product_memberships" : [
        "CXXQueue"
      ],
      "sources" : [
        "spsc/Queue.cpp"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
{
  "workspace" : {
    "name" : "CXXQueue",
    "schemes" : [
      "CXXQueue"
    ]
  }
}
2026-09-26 12:43:08.462 xcodebuild[660:3883] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme CXXQueue -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-27.0.0-Release.Candidate.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 CXXQueue -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  CXXQueue: /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 'CXXQueue-product' in project 'CXXQueue'
        ➜ Explicit dependency on target 'CXXQueue' in project 'CXXQueue'
    Target 'CXXQueue' in project 'CXXQueue' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -x c++ -c /dev/null
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 0cecff6ee87d2d39200dc6dfbc5c8991
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/0cecff6ee87d2d39200dc6dfbc5c8991.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/ModuleCache.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/CompilationCache.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/CompilationCache.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
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-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx27.0-26A425-e829b21a6f8c9b70876ba0858053c0446a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx27.0-26A425-e829b21a6f8c9b70876ba0858053c0446a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/PrecompiledHeaders
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/PrecompiledHeaders
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/CXXQueue.DependencyStaticMetadataFileList (in target 'CXXQueue' from project 'CXXQueue')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/CXXQueue.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/CXXQueue.DependencyMetadataFileList (in target 'CXXQueue' from project 'CXXQueue')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/CXXQueue.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/82b82416624d2658e5098eb0a28c15c5-common-args.resp (in target 'CXXQueue' from project 'CXXQueue')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/82b82416624d2658e5098eb0a28c15c5-common-args.resp
'-std=c++20' -fmodules -fno-cxx-modules -gmodules '-fmodules-cache-path=/Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex' '-fmodule-name=CXXQueue' '-D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG' -fpascal-strings -O0 -DSWIFT_PACKAGE '-DDEBUG=1' -g -fvisibility-inlines-hidden -fprofile-instr-generate -fcoverage-mapping -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -I/Users/admin/builder/spi-builder-workspace/Sources/CXXQueue/include -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/DerivedSources-normal/arm64 -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/DerivedSources/arm64 -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/DerivedSources -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -iframework /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -DXcode
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/CXXQueue.LinkFileList (in target 'CXXQueue' from project 'CXXQueue')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/CXXQueue.LinkFileList
CompileC /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/Queue.o /Users/admin/builder/spi-builder-workspace/Sources/CXXQueue/spsc/Queue.cpp normal arm64 c++ com.apple.compilers.llvm.clang.1_0.compiler (in target 'CXXQueue' from project 'CXXQueue')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

    Using response file: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/82b82416624d2658e5098eb0a28c15c5-common-args.resp

    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -x c++ -ivfsstatcache /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx27.0-26A425-e829b21a6f8c9b70876ba0858053c0446a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -target arm64-apple-macos12.0 -fmessage-length\=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit\=0 -fno-color-diagnostics -fmodules-prune-interval\=86400 -fmodules-prune-after\=345600 -fbuild-session-file\=/Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -fmodules-validate-once-per-build-session -Wnon-modular-include-in-framework-module -Werror\=non-modular-include-in-framework-module -Wno-trigraphs -Wno-missing-field-initializers -Wno-missing-prototypes -Wno-return-type -Wno-non-virtual-dtor -Wno-overloaded-virtual -Wno-exit-time-destructors -Wno-missing-braces -Wparentheses -Wswitch -Wno-unused-function -Wno-unused-label -Wno-unused-parameter -Wno-unused-variable -Wunused-value -Wno-empty-body -Wno-uninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wno-constant-conversion -Wno-int-conversion -Wno-bool-conversion -Wno-enum-conversion -Wno-float-conversion -Wno-non-literal-null-conversion -Wno-objc-literal-conversion -Wshorten-64-to-32 -Wno-newline-eof -Wno-c++11-extensions -Wno-implicit-fallthrough -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -fstrict-aliasing -Wdeprecated-declarations -Winvalid-offsetof -Wno-sign-conversion -Wno-infinite-recursion -Wno-move -Wno-comma -Wno-block-capture-autoreleasing -Wno-strict-prototypes -Wno-range-loop-analysis -Wno-semicolon-before-method-body -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/82b82416624d2658e5098eb0a28c15c5-common-args.resp -MMD -MT dependencies -MF /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/Queue.d --serialize-diagnostics /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/Queue.dia -c /Users/admin/builder/spi-builder-workspace/Sources/CXXQueue/spsc/Queue.cpp -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/Queue.o -index-unit-output-path /CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/Queue.o
Ld /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/CXXQueue.o normal (in target 'CXXQueue' from project 'CXXQueue')
    cd /Users/admin/builder/spi-builder-workspace
    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -Xlinker -reproducible -target arm64-apple-macos12.0 -r -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -O0 -Xlinker -no_warn_duplicate_libraries -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -iframework /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -filelist /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/CXXQueue.LinkFileList -nostdlib -Xlinker -object_path_lto -Xlinker /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/CXXQueue_lto.o -Xlinker -no_deduplicate -Xlinker -debug_variant -Xlinker -dependency_info -Xlinker /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/CXXQueue.build/Debug/CXXQueue-t.build/Objects-normal/arm64/CXXQueue_dependency_info.dat -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/CXXQueue.o
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
** BUILD SUCCEEDED **
2026-09-26 12:43:10.000 xcodebuild[661:3925] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:a37d5449dafafbba3b660c0cafb7a0324fe37256, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:a37d5449dafafbba3b660c0cafb7a0324fe37256, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:a37d5449dafafbba3b660c0cafb7a0324fe37256, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:a37d5449dafafbba3b660c0cafb7a0324fe37256, name:My Mac }
Build complete.
{
  "cxx_language_standard" : "c++20",
  "dependencies" : [
  ],
  "manifest_display_name" : "CXXQueue",
  "name" : "CXXQueue",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "CXXQueue",
      "targets" : [
        "CXXQueue"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CXXQueueTests",
      "module_type" : "SwiftTarget",
      "name" : "CXXQueueTests",
      "path" : "Tests/CXXQueueTests",
      "sources" : [
        "CXXQueueTests.swift"
      ],
      "target_dependencies" : [
        "CXXQueue"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CXXQueue",
      "module_type" : "ClangTarget",
      "name" : "CXXQueue",
      "path" : "Sources/CXXQueue",
      "product_memberships" : [
        "CXXQueue"
      ],
      "sources" : [
        "spsc/Queue.cpp"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Done.