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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Fast-DDS-Prebuild, reference v3.0.1 (913639), with Swift 6.1 for watchOS using Xcode 16.3 on 29 Apr 2025 15:04:09 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Fast-DDS-Prebuild -destination generic/platform=watchOS

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/literally-anything/Fast-DDS-Prebuild.git
Reference: v3.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/literally-anything/Fast-DDS-Prebuild
 * tag               v3.0.1     -> FETCH_HEAD
HEAD is now at 9136396 Merge branch 'master' of https://github.com/literally-anything/Fast-DDS-Prebuild
Updating files:  99% (4220/4235)
Updating files: 100% (4235/4235)
Updating files: 100% (4235/4235), done.
Cloned https://github.com/literally-anything/Fast-DDS-Prebuild.git
Revision (git rev-parse @):
9136396cd5cfa44533b08f7ba1761c639a435fe6
SUCCESS checkout https://github.com/literally-anything/Fast-DDS-Prebuild.git at v3.0.1
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/literally-anything/Fast-DDS-Prebuild.git
https://github.com/literally-anything/Fast-DDS-Prebuild.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Fast-DDS-Prebuild",
  "name" : "Fast-DDS-Prebuild",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Fast-DDS",
      "targets" : [
        "Fast-DDS"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Fast_DDS",
      "module_type" : "BinaryTarget",
      "name" : "Fast-DDS",
      "path" : "Fast-DDS.xcframework",
      "product_memberships" : [
        "Fast-DDS"
      ],
      "sources" : [
      ],
      "type" : "binary"
    }
  ],
  "tools_version" : "5.9"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  Fast-DDS-Prebuild: /Users/admin/builder/spi-builder-workspace
resolved source packages: Fast-DDS-Prebuild
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Fast-DDS-Prebuild",
  "name" : "Fast-DDS-Prebuild",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Fast-DDS",
      "targets" : [
        "Fast-DDS"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Fast_DDS",
      "module_type" : "BinaryTarget",
      "name" : "Fast-DDS",
      "path" : "Fast-DDS.xcframework",
      "product_memberships" : [
        "Fast-DDS"
      ],
      "sources" : [
      ],
      "type" : "binary"
    }
  ],
  "tools_version" : "5.9"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Fast-DDS-Prebuild"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Fast-DDS-Prebuild -destination generic/platform=watchOS OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.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 Fast-DDS-Prebuild -destination generic/platform=watchOS "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Resolve Package Graph
Resolved source packages:
  Fast-DDS-Prebuild: /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 'Fast-DDS' in project 'Fast-DDS-Prebuild' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.4.sdk -x c -c /dev/null
Build description signature: 705c9915f60bd07e457514372ffb1c75
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/705c9915f60bd07e457514372ffb1c75.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Fast-DDS.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Fast-DDS.xcframework'. (in target 'Fast-DDS' from project 'Fast-DDS-Prebuild')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme Fast-DDS-Prebuild
(1 failure)
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  Fast-DDS-Prebuild: /Users/admin/builder/spi-builder-workspace
resolved source packages: Fast-DDS-Prebuild
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Fast-DDS-Prebuild",
  "name" : "Fast-DDS-Prebuild",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Fast-DDS",
      "targets" : [
        "Fast-DDS"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Fast_DDS",
      "module_type" : "BinaryTarget",
      "name" : "Fast-DDS",
      "path" : "Fast-DDS.xcframework",
      "product_memberships" : [
        "Fast-DDS"
      ],
      "sources" : [
      ],
      "type" : "binary"
    }
  ],
  "tools_version" : "5.9"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Fast-DDS-Prebuild"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Fast-DDS-Prebuild -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-16.3.0.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 Fast-DDS-Prebuild -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
  Fast-DDS-Prebuild: /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 'Fast-DDS' in project 'Fast-DDS-Prebuild' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.4.sdk -x c -c /dev/null
Build description signature: 262c338fa77c185c462abf60dec36bbf
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/262c338fa77c185c462abf60dec36bbf.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Fast-DDS.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Fast-DDS.xcframework'. (in target 'Fast-DDS' from project 'Fast-DDS-Prebuild')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme Fast-DDS-Prebuild
(1 failure)
BUILD FAILURE 6.1 watchOS