Swift Package Index

Build Information

Failed to build swift-differentiation-stdlib, reference 605.0.0-prerelease-1 (3af76b), with Swift 6.4 for watchOS using Xcode 27.0 on 28 Sep 2026 19:55:53 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 swift-differentiation-stdlib -destination generic/platform=watchOS

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Reference: 605.0.0-prerelease-1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/differentiable-swift/swift-differentiation-stdlib
 * tag               605.0.0-prerelease-1 -> FETCH_HEAD
HEAD is now at 3af76b9 release: 605.0.0-prerelease-1 (swift-DEVELOPMENT-SNAPSHOT-2026-09-21-a)
Cloned https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Revision (git rev-parse @):
3af76b9a110bf78ca45d2cfb52e58014e2e73949
SUCCESS checkout https://github.com/differentiable-swift/swift-differentiation-stdlib.git at 605.0.0-prerelease-1
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.4
Building package at path:  $PWD
https://github.com/differentiable-swift/swift-differentiation-stdlib.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:
  swift-differentiation-stdlib: /Users/admin/builder/spi-builder-workspace
resolved source packages: swift-differentiation-stdlib
2026-09-28 15:55:15.610 xcodebuild[529:3029] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swift-differentiation-stdlib",
  "name" : "swift-differentiation-stdlib",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "26.0"
    },
    {
      "name" : "ios",
      "version" : "26.0"
    }
  ],
  "products" : [
    {
      "name" : "_Differentiation",
      "targets" : [
        "_Differentiation"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "_Differentiation",
      "module_type" : "BinaryTarget",
      "name" : "_Differentiation",
      "path" : "remote/archive/_Differentiation-swift-DEVELOPMENT-SNAPSHOT-2026-09-21-a.xcframework.zip",
      "product_memberships" : [
        "_Differentiation"
      ],
      "sources" : [
      ],
      "type" : "binary"
    },
    {
      "c99name" : "DifferentiationTests",
      "module_type" : "SwiftTarget",
      "name" : "DifferentiationTests",
      "path" : "Tests/DifferentiationTests",
      "sources" : [
        "DifferentiationTests.swift"
      ],
      "target_dependencies" : [
        "_Differentiation"
      ],
      "type" : "test"
    }
  ],
  "tools_version" : "6.2"
}
{
  "workspace" : {
    "name" : "swift-differentiation-stdlib",
    "schemes" : [
      "swift-differentiation-stdlib"
    ]
  }
}
2026-09-28 15:55:47.285 xcodebuild[638:3857] [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 swift-differentiation-stdlib -destination generic/platform=watchOS
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 swift-differentiation-stdlib -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
  swift-differentiation-stdlib: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target '_Differentiation-product' in project 'swift-differentiation-stdlib' (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/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -x c -c /dev/null
Build description signature: c1d42bfaccc5440821cf46759db3eba7
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/c1d42bfaccc5440821cf46759db3eba7.xcbuilddata
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/_Differentiation/_Differentiation.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/_Differentiation/_Differentiation.xcframework'. (in target '_Differentiation-product' from project 'swift-differentiation-stdlib')
2026-09-28 15:55:48.837 xcodebuild[639:3901] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
	Building workspace swift-differentiation-stdlib with scheme swift-differentiation-stdlib
(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
Resolved source packages:
  swift-differentiation-stdlib: /Users/admin/builder/spi-builder-workspace
resolved source packages: swift-differentiation-stdlib
2026-09-28 15:55:50.438 xcodebuild[651:3998] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swift-differentiation-stdlib",
  "name" : "swift-differentiation-stdlib",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "26.0"
    },
    {
      "name" : "ios",
      "version" : "26.0"
    }
  ],
  "products" : [
    {
      "name" : "_Differentiation",
      "targets" : [
        "_Differentiation"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "_Differentiation",
      "module_type" : "BinaryTarget",
      "name" : "_Differentiation",
      "path" : "remote/archive/_Differentiation-swift-DEVELOPMENT-SNAPSHOT-2026-09-21-a.xcframework.zip",
      "product_memberships" : [
        "_Differentiation"
      ],
      "sources" : [
      ],
      "type" : "binary"
    },
    {
      "c99name" : "DifferentiationTests",
      "module_type" : "SwiftTarget",
      "name" : "DifferentiationTests",
      "path" : "Tests/DifferentiationTests",
      "sources" : [
        "DifferentiationTests.swift"
      ],
      "target_dependencies" : [
        "_Differentiation"
      ],
      "type" : "test"
    }
  ],
  "tools_version" : "6.2"
}
{
  "workspace" : {
    "name" : "swift-differentiation-stdlib",
    "schemes" : [
      "swift-differentiation-stdlib"
    ]
  }
}
2026-09-28 15:55:51.939 xcodebuild[660:4080] [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 swift-differentiation-stdlib -destination generic/platform=watchOS
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 swift-differentiation-stdlib -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
  swift-differentiation-stdlib: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target '_Differentiation-product' in project 'swift-differentiation-stdlib' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/_Differentiation/_Differentiation.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/_Differentiation/_Differentiation.xcframework'. (in target '_Differentiation-product' from project 'swift-differentiation-stdlib')
2026-09-28 15:55:53.009 xcodebuild[681:4267] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
	Building workspace swift-differentiation-stdlib with scheme swift-differentiation-stdlib
(1 failure)
BUILD FAILURE 6.4 watchOS