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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

Successful build of Python3, reference master (3efdfb), with Swift 6.0 for macOS (Xcode) using Xcode 16.0 on 31 Oct 2024 04:02:32 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Python3-Package -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/kzaher/cpython3.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/kzaher/cpython3
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 3efdfb2 Fixes lib name.
Cloned https://github.com/kzaher/cpython3.git
Revision (git rev-parse @):
3efdfb22e6c5d0e6bd58c384f5ec4be3cf4171ab
SUCCESS checkout https://github.com/kzaher/cpython3.git at master
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.0
Building package at path:  $PWD
https://github.com/kzaher/cpython3.git
Command line invocation:
    /Applications/Xcode-16.1.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
ignoring declared target(s) 'Python3' in the system packagefailed to retrieve search paths with pkg-config; maybe pkg-config is not installedcouldn't find pc file for python3
Resolve Package Graph
ignoring declared target(s) 'Python3' in the system packagecouldn't find pc file for python3
Resolved source packages:
  Python3: /Users/admin/builder/spi-builder-workspace
resolved source packages: Python3
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Python3",
  "name" : "Python3",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Python3",
      "targets" : [
        "Python3"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Python3",
      "module_type" : "SystemLibraryTarget",
      "name" : "Python3",
      "path" : ".",
      "product_memberships" : [
        "Python3"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "4.0"
}
warning: 'spi-builder-workspace': ignoring declared target(s) 'Python3' in the system package
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Python3-Package"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Python3-Package -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete
Command line invocation:
    /Applications/Xcode-16.1.0.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 Python3-Package -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete"
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete
Resolve Package Graph
ignoring declared target(s) 'Python3' in the system packagefailed to retrieve search paths with pkg-config; maybe pkg-config is not installedcouldn't find pc file for python3
Resolved source packages:
  Python3: /Users/admin/builder/spi-builder-workspace
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'Python3' in project 'Python3'
        ➜ Explicit dependency on target 'Python3' in project 'Python3'
    Target 'Python3' in project 'Python3' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.1.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.1.sdk -x c -c /dev/null
Build description signature: 197ff1167ad8f9ed6ad2daf321c37663
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/197ff1167ad8f9ed6ad2daf321c37663.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
** BUILD SUCCEEDED **
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:0000FE00-8C151E3703BE51BE, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:0000FE00-8C151E3703BE51BE, name:My Mac }
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Python3",
  "name" : "Python3",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Python3",
      "targets" : [
        "Python3"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Python3",
      "module_type" : "SystemLibraryTarget",
      "name" : "Python3",
      "path" : ".",
      "product_memberships" : [
        "Python3"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "4.0"
}
warning: 'spi-builder-workspace': ignoring declared target(s) 'Python3' in the system package
Done.