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Build Information

Failed to build DL4STensorboard, reference 0.1.0 (4d9803), with Swift 6.4 for macOS (Xcode) using Xcode 27.0 on 15 Sep 2026 21:15:47 UTC.

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 DL4STensorboard -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/palle-k/DL4S-Tensorboard.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/palle-k/DL4S-Tensorboard
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at 4d98033 minor changes
Cloned https://github.com/palle-k/DL4S-Tensorboard.git
Revision (git rev-parse @):
4d98033d0f414a8db4c39792c0a36e045c1dd1c1
SUCCESS checkout https://github.com/palle-k/DL4S-Tensorboard.git at 0.1.0
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.4
Building package at path:  $PWD
https://github.com/palle-k/DL4S-Tensorboard.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
Fetching from https://github.com/palle-k/DL4S.git
Fetching from https://github.com/twostraws/SwiftGD
Fetching from https://github.com/apple/swift-protobuf.git
Creating working copy of package ‘swift-protobuf’
Checking out 1.38.1 of package ‘swift-protobuf’
Creating working copy of package ‘DL4S’
Checking out master (a06a1d9) of package ‘DL4S’
Creating working copy of package ‘SwiftGD’
Checking out 2.6.0 of package ‘SwiftGD’
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
    brew install gd
Resolve Package Graph
you may be able to install gdlib using your system-packager:
    brew install gd
Resolved source packages:
  DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
  DL4STensorboard: /Users/admin/builder/spi-builder-workspace
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
  SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
resolved source packages: DL4S, DL4STensorboard, SwiftProtobuf, SwiftGD
2026-09-15 17:14:52.604 xcodebuild[529:3024] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "dl4s",
      "requirement" : {
        "branch" : [
          "master"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/palle-k/DL4S.git"
    },
    {
      "identity" : "swift-protobuf",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-protobuf.git"
    },
    {
      "identity" : "swiftgd",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/twostraws/SwiftGD"
    }
  ],
  "manifest_display_name" : "DL4STensorboard",
  "name" : "DL4STensorboard",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "DL4STensorboard",
      "targets" : [
        "DL4STensorboard"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DL4STensorboardTests",
      "module_type" : "SwiftTarget",
      "name" : "DL4STensorboardTests",
      "path" : "Tests/DL4STensorboardTests",
      "sources" : [
        "DL4S_TensorboardTests.swift",
        "HistogramTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DL4STensorboard"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DL4STensorboard",
      "module_type" : "SwiftTarget",
      "name" : "DL4STensorboard",
      "path" : "Sources/DL4STensorboard",
      "product_dependencies" : [
        "DL4S",
        "SwiftProtobuf",
        "SwiftGD"
      ],
      "product_memberships" : [
        "DL4STensorboard"
      ],
      "sources" : [
        "Autogenerated/event.pb.swift",
        "Autogenerated/resource_handle.pb.swift",
        "Autogenerated/summary.pb.swift",
        "Autogenerated/tensor.pb.swift",
        "Autogenerated/tensor_shape.pb.swift",
        "Autogenerated/types.pb.swift",
        "CRC.swift",
        "Ext.swift",
        "Histogram.swift",
        "TSVWriter.swift",
        "TensorboardWriter.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "DL4STensorboard",
    "schemes" : [
      "DL4STensorboard"
    ]
  }
}
2026-09-15 17:15:35.039 xcodebuild[766:4721] [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 DL4STensorboard -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 DL4STensorboard -destination platform=macOS,arch=arm64
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
    brew install gd
Resolve Package Graph
you may be able to install gdlib using your system-packager:
    brew install gd
Resolved source packages:
  DL4STensorboard: /Users/admin/builder/spi-builder-workspace
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
  DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
  SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (11 targets)
    Target 'DL4STensorboard-product' in project 'DL4STensorboard'
        ➜ Explicit dependency on target 'DL4STensorboard' in project 'DL4STensorboard'
        ➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
        ➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
    Target 'DL4STensorboard' in project 'DL4STensorboard'
        ➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
        ➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
    Target 'SwiftGD-product' in project 'SwiftGD'
        ➜ Explicit dependency on target 'SwiftGD' in project 'SwiftGD'
    Target 'SwiftGD' in project 'SwiftGD'
        ➜ Explicit dependency on target 'gd' in project 'SwiftGD'
    Target 'gd' in project 'SwiftGD' (no dependencies)
    Target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftProtobuf' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
    Target 'SwiftProtobuf' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
    Target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf' (no dependencies)
    Target 'DL4S-product' in project 'DL4S'
        ➜ Explicit dependency on target 'DL4S' in project 'DL4S'
        ➜ Explicit dependency on target 'MKL' in project 'DL4S'
    Target 'DL4S' in project 'DL4S'
        ➜ Explicit dependency on target 'MKL' in project 'DL4S'
    Target 'MKL' in project 'DL4S' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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/swiftc --version
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/ld -version_details
ReadFileContents /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: dc8b981db77ab1d3a991dfb2ab07b237
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/dc8b981db77ab1d3a991dfb2ab07b237.xcbuilddata
error: The package product 'DL4S-product' requires minimum platform version 15.0 for the macOS platform, but this target supports 12.0 (in target 'DL4STensorboard' from project 'DL4STensorboard')
2026-09-15 17:15:38.793 xcodebuild[775:4785] [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:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building workspace DL4STensorboard with scheme DL4STensorboard
(1 failure)
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
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
    brew install gd
Resolved source packages:
  SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
  DL4STensorboard: /Users/admin/builder/spi-builder-workspace
  DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
resolved source packages: SwiftGD, DL4STensorboard, DL4S, SwiftProtobuf
2026-09-15 17:15:42.099 xcodebuild[824:5043] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "dl4s",
      "requirement" : {
        "branch" : [
          "master"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/palle-k/DL4S.git"
    },
    {
      "identity" : "swift-protobuf",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-protobuf.git"
    },
    {
      "identity" : "swiftgd",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/twostraws/SwiftGD"
    }
  ],
  "manifest_display_name" : "DL4STensorboard",
  "name" : "DL4STensorboard",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "DL4STensorboard",
      "targets" : [
        "DL4STensorboard"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DL4STensorboardTests",
      "module_type" : "SwiftTarget",
      "name" : "DL4STensorboardTests",
      "path" : "Tests/DL4STensorboardTests",
      "sources" : [
        "DL4S_TensorboardTests.swift",
        "HistogramTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DL4STensorboard"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DL4STensorboard",
      "module_type" : "SwiftTarget",
      "name" : "DL4STensorboard",
      "path" : "Sources/DL4STensorboard",
      "product_dependencies" : [
        "DL4S",
        "SwiftProtobuf",
        "SwiftGD"
      ],
      "product_memberships" : [
        "DL4STensorboard"
      ],
      "sources" : [
        "Autogenerated/event.pb.swift",
        "Autogenerated/resource_handle.pb.swift",
        "Autogenerated/summary.pb.swift",
        "Autogenerated/tensor.pb.swift",
        "Autogenerated/tensor_shape.pb.swift",
        "Autogenerated/types.pb.swift",
        "CRC.swift",
        "Ext.swift",
        "Histogram.swift",
        "TSVWriter.swift",
        "TensorboardWriter.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "DL4STensorboard",
    "schemes" : [
      "DL4STensorboard"
    ]
  }
}
2026-09-15 17:15:44.187 xcodebuild[840:5121] [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 DL4STensorboard -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 DL4STensorboard -destination platform=macOS,arch=arm64
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
    brew install gd
Resolved source packages:
  DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
  SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
  DL4STensorboard: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (11 targets)
    Target 'DL4STensorboard-product' in project 'DL4STensorboard'
        ➜ Explicit dependency on target 'DL4STensorboard' in project 'DL4STensorboard'
        ➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
        ➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
    Target 'DL4STensorboard' in project 'DL4STensorboard'
        ➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
        ➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
    Target 'SwiftGD-product' in project 'SwiftGD'
        ➜ Explicit dependency on target 'SwiftGD' in project 'SwiftGD'
    Target 'SwiftGD' in project 'SwiftGD'
        ➜ Explicit dependency on target 'gd' in project 'SwiftGD'
    Target 'gd' in project 'SwiftGD' (no dependencies)
    Target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftProtobuf' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
    Target 'SwiftProtobuf' in project 'SwiftProtobuf'
        ➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
    Target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf' (no dependencies)
    Target 'DL4S-product' in project 'DL4S'
        ➜ Explicit dependency on target 'DL4S' in project 'DL4S'
        ➜ Explicit dependency on target 'MKL' in project 'DL4S'
    Target 'DL4S' in project 'DL4S'
        ➜ Explicit dependency on target 'MKL' in project 'DL4S'
    Target 'MKL' in project 'DL4S' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
error: The package product 'DL4S-product' requires minimum platform version 15.0 for the macOS platform, but this target supports 12.0 (in target 'DL4STensorboard' from project 'DL4STensorboard')
2026-09-15 17:15:45.991 xcodebuild[849:5160] [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:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:4cdaeb96810e24b796b752aad914427f3544db75, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building workspace DL4STensorboard with scheme DL4STensorboard
(1 failure)
BUILD FAILURE 6.4 macosXcodebuild