Swift Package Index

Build Information

Failed to build MessagePack, reference 1.2.4 (bbc5ab), with Swift 6.4 for macOS (Xcode) using Xcode 27.0 on 17 Sep 2026 16:05:20 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 MessagePack -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/flight-school/messagepack.git
Reference: 1.2.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/flight-school/messagepack
 * tag               1.2.4      -> FETCH_HEAD
HEAD is now at bbc5ab6 Bump version to 1.2.4
Cloned https://github.com/flight-school/messagepack.git
Revision (git rev-parse @):
bbc5ab6362db234f2051e73e67296ebf5c3d2042
SUCCESS checkout https://github.com/flight-school/messagepack.git at 1.2.4
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.4
Building package at path:  $PWD
https://github.com/flight-school/messagepack.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
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MessagePack",
  "name" : "MessagePack",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MessagePack",
      "targets" : [
        "MessagePack"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MessagePackTests",
      "module_type" : "SwiftTarget",
      "name" : "MessagePackTests",
      "path" : "Tests/MessagePackTests",
      "sources" : [
        "Airport.swift",
        "MessagePackDecodingTests.swift",
        "MessagePackEncodingTests.swift",
        "MessagePackPerformanceTests.swift",
        "MessagePackRoundTripTests.swift"
      ],
      "target_dependencies" : [
        "MessagePack"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MessagePack",
      "module_type" : "SwiftTarget",
      "name" : "MessagePack",
      "path" : "Sources/MessagePack",
      "product_memberships" : [
        "MessagePack"
      ],
      "sources" : [
        "AnyCodingKey.swift",
        "Box.swift",
        "Decoder/KeyedDecodingContainer.swift",
        "Decoder/MessagePackDecoder.swift",
        "Decoder/SingleValueDecodingContainer.swift",
        "Decoder/UnkeyedDecodingContainer.swift",
        "Encoder/KeyedEncodingContainer.swift",
        "Encoder/MessagePackEncoder.swift",
        "Encoder/SingleValueEncodingContainer.swift",
        "Encoder/UnkeyedEncodingContainer.swift",
        "FixedWidthInteger+Bytes.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "MessagePack",
    "schemes" : [
      "MessagePack"
    ],
    "targets" : [
      "MessagePack",
      "MessagePackPackageDescription",
      "MessagePackPackageTests",
      "MessagePackTests"
    ]
  }
}
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 MessagePack -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 MessagePack -destination platform=macOS,arch=arm64
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'MessagePack' in project 'MessagePack' (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/swiftc --version
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: fe33b77502ba81aeacf38da6a7124557
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/fe33b77502ba81aeacf38da6a7124557.xcbuilddata
/Users/admin/builder/spi-builder-workspace/MessagePack.xcodeproj: error: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.10, but the range of supported deployment target versions is 12.0 to 27.0.x. (in target 'MessagePack' from project 'MessagePack')
** BUILD FAILED **
The following build commands failed:
	Building project MessagePack with scheme MessagePack
(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
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MessagePack",
  "name" : "MessagePack",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MessagePack",
      "targets" : [
        "MessagePack"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MessagePackTests",
      "module_type" : "SwiftTarget",
      "name" : "MessagePackTests",
      "path" : "Tests/MessagePackTests",
      "sources" : [
        "Airport.swift",
        "MessagePackDecodingTests.swift",
        "MessagePackEncodingTests.swift",
        "MessagePackPerformanceTests.swift",
        "MessagePackRoundTripTests.swift"
      ],
      "target_dependencies" : [
        "MessagePack"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MessagePack",
      "module_type" : "SwiftTarget",
      "name" : "MessagePack",
      "path" : "Sources/MessagePack",
      "product_memberships" : [
        "MessagePack"
      ],
      "sources" : [
        "AnyCodingKey.swift",
        "Box.swift",
        "Decoder/KeyedDecodingContainer.swift",
        "Decoder/MessagePackDecoder.swift",
        "Decoder/SingleValueDecodingContainer.swift",
        "Decoder/UnkeyedDecodingContainer.swift",
        "Encoder/KeyedEncodingContainer.swift",
        "Encoder/MessagePackEncoder.swift",
        "Encoder/SingleValueEncodingContainer.swift",
        "Encoder/UnkeyedEncodingContainer.swift",
        "FixedWidthInteger+Bytes.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "MessagePack",
    "schemes" : [
      "MessagePack"
    ],
    "targets" : [
      "MessagePack",
      "MessagePackPackageDescription",
      "MessagePackPackageTests",
      "MessagePackTests"
    ]
  }
}
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 MessagePack -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 MessagePack -destination platform=macOS,arch=arm64
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'MessagePack' in project 'MessagePack' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
/Users/admin/builder/spi-builder-workspace/MessagePack.xcodeproj: error: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.10, but the range of supported deployment target versions is 12.0 to 27.0.x. (in target 'MessagePack' from project 'MessagePack')
** BUILD FAILED **
The following build commands failed:
	Building project MessagePack with scheme MessagePack
(1 failure)
BUILD FAILURE 6.4 macosXcodebuild