The Swift Package Index logo.Swift Package Index

Build Information

Failed to build OpenCombineJS, reference main (e393e6), with Swift 6.4 for macOS (Xcode) using Xcode 27.0 on 18 Sep 2026 06:41:16 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 OpenCombineJS-Package -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swiftwasm/OpenCombineJS.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swiftwasm/OpenCombineJS
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at e393e6d Update to v2 of Contributor Covenant in shared GitHub repo (#7)
Cloned https://github.com/swiftwasm/OpenCombineJS.git
Revision (git rev-parse @):
e393e6d449511615ea5445b04f4b97dc6e5fb141
SUCCESS checkout https://github.com/swiftwasm/OpenCombineJS.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.4
Building package at path:  $PWD
https://github.com/swiftwasm/OpenCombineJS.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/OpenCombine/OpenCombine.git
Fetching from https://github.com/swiftwasm/JavaScriptKit.git
Fetching from https://github.com/swiftlang/swift-syntax
Creating working copy of package ‘OpenCombine’
Checking out 0.14.0 of package ‘OpenCombine’
Creating working copy of package ‘JavaScriptKit’
Checking out 0.59.0 of package ‘JavaScriptKit’
Creating working copy of package ‘swift-syntax’
Checking out 603.0.2 of package ‘swift-syntax’
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/603.0.2/swiftlang-6.4.0.34.1-macosx27.0-MacroSupport.zip
Resolve Package Graph
Resolved source packages:
  JavaScriptKit: https://github.com/swiftwasm/JavaScriptKit.git @ 0.59.0
  OpenCombine: https://github.com/OpenCombine/OpenCombine.git @ 0.14.0
  OpenCombineJS: /Users/admin/builder/spi-builder-workspace
  swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.2
resolved source packages: JavaScriptKit, OpenCombine, OpenCombineJS, swift-syntax
2026-09-18 02:40:06.577 xcodebuild[524:3017] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "javascriptkit",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.13.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/swiftwasm/JavaScriptKit.git"
    },
    {
      "identity" : "opencombine",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.13.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/OpenCombine/OpenCombine.git"
    }
  ],
  "manifest_display_name" : "OpenCombineJS",
  "name" : "OpenCombineJS",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "OpenCombineJSExample",
      "targets" : [
        "OpenCombineJSExample"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "OpenCombineJS",
      "targets" : [
        "OpenCombineJS"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OpenCombineJSExample",
      "module_type" : "SwiftTarget",
      "name" : "OpenCombineJSExample",
      "path" : "Sources/OpenCombineJSExample",
      "product_memberships" : [
        "OpenCombineJSExample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "OpenCombineJS"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "OpenCombineJS",
      "module_type" : "SwiftTarget",
      "name" : "OpenCombineJS",
      "path" : "Sources/OpenCombineJS",
      "product_dependencies" : [
        "JavaScriptKit",
        "OpenCombine"
      ],
      "product_memberships" : [
        "OpenCombineJSExample",
        "OpenCombineJS"
      ],
      "sources" : [
        "JSPromise.swift",
        "JSScheduler.swift",
        "JSValueDecoder.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "workspace" : {
    "name" : "OpenCombineJS",
    "schemes" : [
      "OpenCombineJS",
      "OpenCombineJS-Package",
      "OpenCombineJSExample"
    ]
  }
}
2026-09-18 02:40:53.341 xcodebuild[795:4891] [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 OpenCombineJS-Package -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 OpenCombineJS-Package -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  JavaScriptKit: https://github.com/swiftwasm/JavaScriptKit.git @ 0.59.0
  OpenCombine: https://github.com/OpenCombine/OpenCombine.git @ 0.14.0
  OpenCombineJS: /Users/admin/builder/spi-builder-workspace
  swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.2
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (10 targets)
    Target 'OpenCombineJSExample-product' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'OpenCombineJS' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'OpenCombine-product' in project 'OpenCombine'
    Target 'OpenCombineJS-product' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'OpenCombineJS' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'OpenCombine-product' in project 'OpenCombine'
    Target 'OpenCombineJS' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'OpenCombine-product' in project 'OpenCombine'
    Target 'OpenCombine-product' in project 'OpenCombine'
        ➜ Explicit dependency on target 'OpenCombine' in project 'OpenCombine'
        ➜ Explicit dependency on target 'COpenCombineHelpers' in project 'OpenCombine'
    Target 'OpenCombine' in project 'OpenCombine'
        ➜ Explicit dependency on target 'COpenCombineHelpers' in project 'OpenCombine'
    Target 'COpenCombineHelpers' in project 'OpenCombine' (no dependencies)
    Target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'JavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target '_CJavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'BridgeJSMacros' in project 'JavaScriptKit'
    Target 'JavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target '_CJavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'BridgeJSMacros' in project 'JavaScriptKit'
    Target 'BridgeJSMacros' in project 'JavaScriptKit' (no dependencies)
    Target '_CJavaScriptKit' in project 'JavaScriptKit' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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 -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/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: ac054724aaaae84b580f433fd71ce462
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/ac054724aaaae84b580f433fd71ce462.xcbuilddata
error: The package product 'JavaScriptKit-product' requires minimum platform version 13.0 for the macOS platform, but this target supports 12.0 (in target 'OpenCombineJSExample-product' from project 'OpenCombineJS')
error: The package product 'JavaScriptKit-product' requires minimum platform version 13.0 for the macOS platform, but this target supports 12.0 (in target 'OpenCombineJS' from project 'OpenCombineJS')
2026-09-18 02:40:59.524 xcodebuild[814:5059] [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:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building workspace OpenCombineJS with scheme OpenCombineJS-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
Resolve Package Graph
Resolved source packages:
  OpenCombine: https://github.com/OpenCombine/OpenCombine.git @ 0.14.0
  swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.2
  JavaScriptKit: https://github.com/swiftwasm/JavaScriptKit.git @ 0.59.0
  OpenCombineJS: /Users/admin/builder/spi-builder-workspace
resolved source packages: OpenCombine, swift-syntax, JavaScriptKit, OpenCombineJS
2026-09-18 02:41:07.632 xcodebuild[891:5539] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "javascriptkit",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.13.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/swiftwasm/JavaScriptKit.git"
    },
    {
      "identity" : "opencombine",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.13.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/OpenCombine/OpenCombine.git"
    }
  ],
  "manifest_display_name" : "OpenCombineJS",
  "name" : "OpenCombineJS",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "OpenCombineJSExample",
      "targets" : [
        "OpenCombineJSExample"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "OpenCombineJS",
      "targets" : [
        "OpenCombineJS"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OpenCombineJSExample",
      "module_type" : "SwiftTarget",
      "name" : "OpenCombineJSExample",
      "path" : "Sources/OpenCombineJSExample",
      "product_memberships" : [
        "OpenCombineJSExample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "OpenCombineJS"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "OpenCombineJS",
      "module_type" : "SwiftTarget",
      "name" : "OpenCombineJS",
      "path" : "Sources/OpenCombineJS",
      "product_dependencies" : [
        "JavaScriptKit",
        "OpenCombine"
      ],
      "product_memberships" : [
        "OpenCombineJSExample",
        "OpenCombineJS"
      ],
      "sources" : [
        "JSPromise.swift",
        "JSScheduler.swift",
        "JSValueDecoder.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "workspace" : {
    "name" : "OpenCombineJS",
    "schemes" : [
      "OpenCombineJS",
      "OpenCombineJS-Package",
      "OpenCombineJSExample"
    ]
  }
}
2026-09-18 02:41:11.754 xcodebuild[917:5717] [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 OpenCombineJS-Package -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 OpenCombineJS-Package -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  JavaScriptKit: https://github.com/swiftwasm/JavaScriptKit.git @ 0.59.0
  swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.2
  OpenCombineJS: /Users/admin/builder/spi-builder-workspace
  OpenCombine: https://github.com/OpenCombine/OpenCombine.git @ 0.14.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (10 targets)
    Target 'OpenCombineJSExample-product' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'OpenCombineJS' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'OpenCombine-product' in project 'OpenCombine'
    Target 'OpenCombineJS-product' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'OpenCombineJS' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'OpenCombine-product' in project 'OpenCombine'
    Target 'OpenCombineJS' in project 'OpenCombineJS'
        ➜ Explicit dependency on target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'OpenCombine-product' in project 'OpenCombine'
    Target 'OpenCombine-product' in project 'OpenCombine'
        ➜ Explicit dependency on target 'OpenCombine' in project 'OpenCombine'
        ➜ Explicit dependency on target 'COpenCombineHelpers' in project 'OpenCombine'
    Target 'OpenCombine' in project 'OpenCombine'
        ➜ Explicit dependency on target 'COpenCombineHelpers' in project 'OpenCombine'
    Target 'COpenCombineHelpers' in project 'OpenCombine' (no dependencies)
    Target 'JavaScriptKit-product' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'JavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target '_CJavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'BridgeJSMacros' in project 'JavaScriptKit'
    Target 'JavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target '_CJavaScriptKit' in project 'JavaScriptKit'
        ➜ Explicit dependency on target 'BridgeJSMacros' in project 'JavaScriptKit'
    Target 'BridgeJSMacros' in project 'JavaScriptKit' (no dependencies)
    Target '_CJavaScriptKit' in project 'JavaScriptKit' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
error: The package product 'JavaScriptKit-product' requires minimum platform version 13.0 for the macOS platform, but this target supports 12.0 (in target 'OpenCombineJSExample-product' from project 'OpenCombineJS')
error: The package product 'JavaScriptKit-product' requires minimum platform version 13.0 for the macOS platform, but this target supports 12.0 (in target 'OpenCombineJS' from project 'OpenCombineJS')
2026-09-18 02:41:15.656 xcodebuild[936:5865] [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:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:127e0b70a034bff076244bc1e7eb46103ff1ef8f, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building workspace OpenCombineJS with scheme OpenCombineJS-Package
(1 failure)
BUILD FAILURE 6.4 macosXcodebuild