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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 tzf, reference main (a16f92), with Swift 6.0 for macOS (Xcode) using Xcode 16.2 on 24 Mar 2025 15:11:02 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SPIManifest -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ringsaturn/tzf-swift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ringsaturn/tzf-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at a16f920 bump tzf-rel
Submodule path 'tzf-rel-lite': checked out 'a123462ad55abe8efe14e3f55b6b17b6ba034086'
Submodule 'tzf-rel-lite' (https://github.com/ringsaturn/tzf-rel-lite) registered for path 'tzf-rel-lite'
Cloning into '/Users/admin/builder/spi-builder-workspace/tzf-rel-lite'...
Cloned https://github.com/ringsaturn/tzf-swift.git
Revision (git rev-parse @):
a16f9202576d8cc81760d223acfc93eb24ba958c
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ringsaturn/tzf-swift.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.0
Building package at path:  $PWD
https://github.com/ringsaturn/tzf-swift.git
https://github.com/ringsaturn/tzf-swift.git
{
  "dependencies" : [
    {
      "identity" : "swift-protobuf",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.29.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-protobuf.git"
    },
    {
      "identity" : "swift-testing",
      "requirement" : {
        "revision" : [
          "e76a44f"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-testing.git"
    },
    {
      "identity" : "package-benchmark",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.4.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ordo-one/package-benchmark"
    },
    {
      "identity" : "cities-swift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.1.1",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ringsaturn/cities-swift.git"
    },
    {
      "identity" : "swifttimezonelookup",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.7",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/patrick-zippenfenig/SwiftTimeZoneLookup.git"
    }
  ],
  "manifest_display_name" : "tzf",
  "name" : "tzf",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    },
    {
      "name" : "ios",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "tzf",
      "targets" : [
        "tzf"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "TimezoneFinderBenchmarks",
      "targets" : [
        "TimezoneFinderBenchmarks"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "tzfTests",
      "module_type" : "SwiftTarget",
      "name" : "tzfTests",
      "path" : "Tests/tzfTests",
      "product_dependencies" : [
        "Testing",
        "Cities"
      ],
      "sources" : [
        "FindersTests.swift",
        "tzfTests.swift"
      ],
      "target_dependencies" : [
        "tzf"
      ],
      "type" : "test"
    },
    {
      "c99name" : "tzf",
      "module_type" : "SwiftTarget",
      "name" : "tzf",
      "path" : "Sources",
      "product_dependencies" : [
        "SwiftProtobuf"
      ],
      "product_memberships" : [
        "tzf",
        "TimezoneFinderBenchmarks"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/Resources/combined-with-oceans.reduce.bin",
          "rule" : {
            "copy" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/Resources/combined-with-oceans.reduce.preindex.bin",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "gen/tzf/v1/tzinfo.pb.swift",
        "tzf/Finders.swift"
      ],
      "target_dependencies" : [
        "geometry"
      ],
      "type" : "library"
    },
    {
      "c99name" : "geometry",
      "module_type" : "SwiftTarget",
      "name" : "geometry",
      "path" : "Sources/geometry",
      "product_memberships" : [
        "tzf",
        "TimezoneFinderBenchmarks"
      ],
      "sources" : [
        "geo.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "TimezoneFinderBenchmarks",
      "module_type" : "SwiftTarget",
      "name" : "TimezoneFinderBenchmarks",
      "path" : "Benchmarks/TimezoneFinderBenchmarks",
      "product_dependencies" : [
        "Benchmark",
        "Cities",
        "SwiftTimeZoneLookup",
        "BenchmarkPlugin"
      ],
      "product_memberships" : [
        "TimezoneFinderBenchmarks"
      ],
      "sources" : [
        "TimezoneFinderBenchmarks.swift"
      ],
      "target_dependencies" : [
        "tzf"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "6.0"
}
Command line invocation:
    /Applications/Xcode-16.2.0.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
Fetching from https://github.com/apple/swift-testing.git
Fetching from https://github.com/apple/swift-protobuf.git
Fetching from https://github.com/ordo-one/package-benchmark
Fetching from https://github.com/swiftlang/swift-syntax.git
Fetching from https://github.com/ringsaturn/cities-swift.git
Fetching from https://github.com/patrick-zippenfenig/SwiftTimeZoneLookup.git
Fetching from https://github.com/HdrHistogram/hdrhistogram-swift
Fetching from https://github.com/apple/swift-system
Fetching from https://github.com/ordo-one/TextTable
Fetching from https://github.com/apple/swift-argument-parser
Fetching from https://github.com/ordo-one/package-jemalloc
Fetching from https://github.com/apple/swift-atomics
Fetching from https://github.com/apple/swift-numerics
Creating working copy of package ‘swift-system’
Checking out 1.4.2 of package ‘swift-system’
Creating working copy of package ‘hdrhistogram-swift’
Checking out 0.1.3 of package ‘hdrhistogram-swift’
Creating working copy of package ‘package-benchmark’
Checking out 1.29.2 of package ‘package-benchmark’
Creating working copy of package ‘swift-testing’
Checking out e76a44f (e76a44f) of package ‘swift-testing’
Creating working copy of package ‘swift-atomics’
Checking out 1.2.0 of package ‘swift-atomics’
Creating working copy of package ‘swift-numerics’
Checking out 1.0.3 of package ‘swift-numerics’
Creating working copy of package ‘TextTable’
Checking out 0.0.2 of package ‘TextTable’
Creating working copy of package ‘swift-syntax’
Checking out 601.0.0-prerelease-2025-03-18 of package ‘swift-syntax’
Creating working copy of package ‘cities-swift’
Checking out 0.1.1 of package ‘cities-swift’
Creating working copy of package ‘swift-argument-parser’
Checking out 1.5.0 of package ‘swift-argument-parser’
Creating working copy of package ‘package-jemalloc’
Checking out 1.0.0 of package ‘package-jemalloc’
Creating working copy of package ‘swift-protobuf’
Checking out 1.29.0 of package ‘swift-protobuf’
Creating working copy of package ‘SwiftTimeZoneLookup’
Checking out 1.0.7 of package ‘SwiftTimeZoneLookup’
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install jemalloc using your system-packager:
    brew install jemalloc
Resolve Package Graph
you may be able to install jemalloc using your system-packager:
    brew install jemalloc
Resolved source packages:
  TextTable: https://github.com/ordo-one/TextTable @ 0.0.2
  swift-testing: https://github.com/apple/swift-testing.git @ e76a44f (e76a44f)
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
  swift-atomics: https://github.com/apple/swift-atomics @ 1.2.0
  swift-syntax: https://github.com/swiftlang/swift-syntax.git @ 601.0.0-prerelease-2025-03-18
  Benchmark: https://github.com/ordo-one/package-benchmark @ 1.29.2
  jemalloc: https://github.com/ordo-one/package-jemalloc @ 1.0.0
  tzf: /Users/admin/builder/spi-builder-workspace
  swift-system: https://github.com/apple/swift-system @ 1.4.2
  package-histogram: https://github.com/HdrHistogram/hdrhistogram-swift @ 0.1.3
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.29.0
  SwiftTimeZoneLookup: https://github.com/patrick-zippenfenig/SwiftTimeZoneLookup.git @ 1.0.7
  Cities: https://github.com/ringsaturn/cities-swift.git @ 0.1.1
resolved source packages: TextTable, swift-testing, swift-numerics, swift-argument-parser, swift-atomics, swift-syntax, Benchmark, jemalloc, tzf, swift-system, package-histogram, SwiftProtobuf, SwiftTimeZoneLookup, Cities
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SPIManifest -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats
Command line invocation:
    /Applications/Xcode-16.2.0.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 SPIManifest -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats"
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
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.29.0
  swift-syntax: https://github.com/swiftlang/swift-syntax.git @ 601.0.0-prerelease-2025-03-18
  Benchmark: https://github.com/ordo-one/package-benchmark @ 1.29.2
  swift-testing: https://github.com/apple/swift-testing.git @ e76a44f (e76a44f)
  package-histogram: https://github.com/HdrHistogram/hdrhistogram-swift @ 0.1.3
  tzf: /Users/admin/builder/spi-builder-workspace
  swift-atomics: https://github.com/apple/swift-atomics @ 1.2.0
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
  Cities: https://github.com/ringsaturn/cities-swift.git @ 0.1.1
  swift-system: https://github.com/apple/swift-system @ 1.4.2
  TextTable: https://github.com/ordo-one/TextTable @ 0.0.2
  SwiftTimeZoneLookup: https://github.com/patrick-zippenfenig/SwiftTimeZoneLookup.git @ 1.0.7
2025-03-24 11:10:54.767 xcodebuild[1286:6284] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-24-03_11-10-0054.xcresult
xcodebuild: error: The workspace named "spi-builder-workspace" does not contain a scheme named "SPIManifest". The "-list" option can be used to find the names of the schemes in the workspace.
Command line invocation:
    /Applications/Xcode-16.2.0.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
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install jemalloc using your system-packager:
    brew install jemalloc
Resolved source packages:
  swift-atomics: https://github.com/apple/swift-atomics @ 1.2.0
  package-histogram: https://github.com/HdrHistogram/hdrhistogram-swift @ 0.1.3
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.29.0
  tzf: /Users/admin/builder/spi-builder-workspace
  swift-testing: https://github.com/apple/swift-testing.git @ e76a44f (e76a44f)
  TextTable: https://github.com/ordo-one/TextTable @ 0.0.2
  SwiftTimeZoneLookup: https://github.com/patrick-zippenfenig/SwiftTimeZoneLookup.git @ 1.0.7
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
  swift-syntax: https://github.com/swiftlang/swift-syntax.git @ 601.0.0-prerelease-2025-03-18
  jemalloc: https://github.com/ordo-one/package-jemalloc @ 1.0.0
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
  Cities: https://github.com/ringsaturn/cities-swift.git @ 0.1.1
  swift-system: https://github.com/apple/swift-system @ 1.4.2
  Benchmark: https://github.com/ordo-one/package-benchmark @ 1.29.2
resolved source packages: swift-atomics, package-histogram, SwiftProtobuf, tzf, swift-testing, TextTable, SwiftTimeZoneLookup, swift-argument-parser, swift-syntax, jemalloc, swift-numerics, Cities, swift-system, Benchmark
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SPIManifest -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-16.2.0.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 SPIManifest -destination platform=macOS,arch=arm64
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  swift-syntax: https://github.com/swiftlang/swift-syntax.git @ 601.0.0-prerelease-2025-03-18
  swift-atomics: https://github.com/apple/swift-atomics @ 1.2.0
  swift-testing: https://github.com/apple/swift-testing.git @ e76a44f (e76a44f)
  Cities: https://github.com/ringsaturn/cities-swift.git @ 0.1.1
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.29.0
  package-histogram: https://github.com/HdrHistogram/hdrhistogram-swift @ 0.1.3
  swift-system: https://github.com/apple/swift-system @ 1.4.2
  SwiftTimeZoneLookup: https://github.com/patrick-zippenfenig/SwiftTimeZoneLookup.git @ 1.0.7
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
  tzf: /Users/admin/builder/spi-builder-workspace
  TextTable: https://github.com/ordo-one/TextTable @ 0.0.2
  Benchmark: https://github.com/ordo-one/package-benchmark @ 1.29.2
2025-03-24 11:11:00.883 xcodebuild[1538:7359] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-24-03_11-11-0000.xcresult
xcodebuild: error: The workspace named "spi-builder-workspace" does not contain a scheme named "SPIManifest". The "-list" option can be used to find the names of the schemes in the workspace.
BUILD FAILURE 6.0 macosXcodebuild