Swift Package Index

Build Information

Failed to build Futures, reference 1.6.1 (f47a29), with Swift 6.4 for iOS using Xcode 27.0 on 16 Sep 2026 18:28:05 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 Futures-Package -destination generic/platform=iOS

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/davidask/Futures.git
Reference: 1.6.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/davidask/Futures
 * tag               1.6.1      -> FETCH_HEAD
HEAD is now at f47a292 Rename file, update discard member
Cloned https://github.com/davidask/Futures.git
Revision (git rev-parse @):
f47a292801a7d5c465e91df62da47f7139c77e72
SUCCESS checkout https://github.com/davidask/Futures.git at 1.6.1
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.4
Building package at path:  $PWD
https://github.com/davidask/Futures.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" : "Futures",
  "name" : "Futures",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.10"
    },
    {
      "name" : "ios",
      "version" : "8.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "Futures",
      "targets" : [
        "Futures"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FuturesTests",
      "module_type" : "SwiftTarget",
      "name" : "FuturesTests",
      "path" : "Tests/FuturesTests",
      "sources" : [
        "FuturesTests.swift"
      ],
      "target_dependencies" : [
        "Futures"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Futures",
      "module_type" : "SwiftTarget",
      "name" : "Futures",
      "path" : "Sources/Futures",
      "product_memberships" : [
        "Futures"
      ],
      "sources" : [
        "AnyFuture.swift",
        "DispatchQueue+Futures.swift",
        "Future.swift",
        "Promise.swift",
        "PromisesExtended.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Futures",
    "schemes" : [
      "Futures-Package"
    ],
    "targets" : [
      "Futures",
      "FuturesPackageDescription",
      "FuturesPackageTests",
      "FuturesTests"
    ]
  }
}
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 Futures-Package -destination generic/platform=iOS
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 Futures-Package -destination generic/platform=iOS
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'Futures' in project 'Futures' (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/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.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: c5a15d0535175da049d64ebcc5ea02bf
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/c5a15d0535175da049d64ebcc5ea02bf.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Futures.xcodeproj: error: The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 15.0 to 27.0.x. (in target 'Futures' from project 'Futures')
warning: Run script build phase 'Swiftlint' will be run during every build because it does not specify any outputs. To address this issue, either add output dependencies to the script phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the script phase. (in target 'Futures' from project 'Futures')
** BUILD FAILED **
The following build commands failed:
	Building project Futures with scheme Futures-Package
(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" : "Futures",
  "name" : "Futures",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.10"
    },
    {
      "name" : "ios",
      "version" : "8.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "Futures",
      "targets" : [
        "Futures"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FuturesTests",
      "module_type" : "SwiftTarget",
      "name" : "FuturesTests",
      "path" : "Tests/FuturesTests",
      "sources" : [
        "FuturesTests.swift"
      ],
      "target_dependencies" : [
        "Futures"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Futures",
      "module_type" : "SwiftTarget",
      "name" : "Futures",
      "path" : "Sources/Futures",
      "product_memberships" : [
        "Futures"
      ],
      "sources" : [
        "AnyFuture.swift",
        "DispatchQueue+Futures.swift",
        "Future.swift",
        "Promise.swift",
        "PromisesExtended.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Futures",
    "schemes" : [
      "Futures-Package"
    ],
    "targets" : [
      "Futures",
      "FuturesPackageDescription",
      "FuturesPackageTests",
      "FuturesTests"
    ]
  }
}
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 Futures-Package -destination generic/platform=iOS
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 Futures-Package -destination generic/platform=iOS
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'Futures' in project 'Futures' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
/Users/admin/builder/spi-builder-workspace/Futures.xcodeproj: error: The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 15.0 to 27.0.x. (in target 'Futures' from project 'Futures')
warning: Run script build phase 'Swiftlint' will be run during every build because it does not specify any outputs. To address this issue, either add output dependencies to the script phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the script phase. (in target 'Futures' from project 'Futures')
** BUILD FAILED **
The following build commands failed:
	Building project Futures with scheme Futures-Package
(1 failure)
BUILD FAILURE 6.4 iOS