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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 ExtendedSwift, reference main (a2b500), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 09:56:28 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/davedelong/extendedswift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/davedelong/extendedswift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at a2b5003 create data from hex string
Cloned https://github.com/davedelong/extendedswift.git
Revision (git rev-parse @):
a2b5003bf986e229ebe8d26fa3fa8f948c2db4ed
SUCCESS checkout https://github.com/davedelong/extendedswift.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/davedelong/extendedswift.git
https://github.com/davedelong/extendedswift.git
{
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            "upper_bound" : "2.0.0"
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        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-algorithms"
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      "identity" : "swift-log",
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      "type" : "executable"
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        "GregorianDateTests.m"
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      "type" : "test"
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      "sources" : [
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        "HTTP+TestHelpers.swift",
        "HTTPTests.swift",
        "ManualLoaderTests.swift",
        "ModifyingLoaderTests.swift",
        "RetryTests.swift"
      ],
      "target_dependencies" : [
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        "ExtendedTest"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HTTP",
      "module_type" : "SwiftTarget",
      "name" : "HTTP",
      "path" : "Sources/HTTP",
      "product_memberships" : [
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      ],
      "sources" : [
        "Bodies/DataBody.swift",
        "Bodies/FormBody.swift",
        "Bodies/JSONBody.swift",
        "Loader/DeduplicatingLoader.swift",
        "Loader/HTTPEnvironmentLoader.swift",
        "Loader/HTTPLoader.swift",
        "Loader/ManualLoader.swift",
        "Loader/ModifyingLoader.swift",
        "Loader/RetryLoader.swift",
        "Loader/ThrottledLoader.swift",
        "Loader/URLSessionLoader.swift",
        "Message/HTTPBody.swift",
        "Message/HTTPError.swift",
        "Message/HTTPHeader.swift",
        "Message/HTTPHeaders.swift",
        "Message/HTTPMethod.swift",
        "Message/HTTPOption.swift",
        "Message/HTTPQuery.swift",
        "Message/HTTPRequest.swift",
        "Message/HTTPRequestToken.swift",
        "Message/HTTPResponse.swift",
        "Message/HTTPResult+Convenience.swift",
        "Message/HTTPResult.swift",
        "Message/HTTPStatus.swift",
        "Options/AuthenticationChallenges.swift",
        "Options/Deduplication.swift",
        "Options/Redirection.swift",
        "Options/RetryStrategy.swift",
        "Options/Throttling.swift",
        "Utilities/AsyncStream.swift",
        "Utilities/Duration.swift",
        "Utilities/HTTPError+Construction.swift",
        "Utilities/HTTPRequest+URLRequest.swift",
        "Utilities/HTTPResponse+URLResponse.swift",
        "Utilities/LoaderChain.swift",
        "Utilities/Pairs.swift",
        "Utilities/URLSession/URLSessionAdapter.swift",
        "Utilities/URLSession/URLSessionAdapterDelegate.swift",
        "Utilities/URLSession/URLSessionTaskState.swift"
      ],
      "target_dependencies" : [
        "ExtendedSwift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ExtendedTest",
      "module_type" : "SwiftTarget",
      "name" : "ExtendedTest",
      "path" : "Sources/ExtendedTest",
      "sources" : [
        "XCTestHelpers.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ExtendedSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "ExtendedSwiftTests",
      "path" : "Tests/ExtendedSwiftTests",
      "sources" : [
        "BuilderTests.swift",
        "CharacterTests.swift",
        "ClockTests.swift",
        "CollectionTests.swift",
        "CountedSetTests.swift",
        "PlistCodableTests.swift",
        "RegexTests.swift",
        "ScannerTests.swift",
        "StringTests.swift",
        "TaskQueueTests.swift"
      ],
      "target_dependencies" : [
        "ExtendedSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ExtendedSwift",
      "module_type" : "SwiftTarget",
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      "path" : "Sources/ExtendedSwift",
      "product_dependencies" : [
        "Algorithms",
        "Logging"
      ],
      "product_memberships" : [
        "ExtendedSwift",
        "ExtendedKit",
        "HTTP",
        "debug"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/ExtendedSwift/Resources/entities.json",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "CloudKit/CKQueryObserver.swift",
        "CloudKit/CKRecordCodable.swift",
        "CloudKit/CKSubscriptionObserver.swift",
        "Codable/AnyCodingKey.swift",
        "Codable/CodingPath.swift",
        "Codable/Decoding.swift",
        "Codable/DecodingError.swift",
        "Codable/Encoding.swift",
        "Codable/EncodingError.swift",
        "Codable/Plist/PlistCodableSupport.swift",
        "Codable/Plist/PlistDecoder.swift",
        "Codable/Plist/PlistEncoder.swift",
        "Codable/PlistCodable.swift",
        "Codable/UserDefaultsCodable.swift",
        "Combine/Subscriber.swift",
        "CoreData/NSAttributeDescription.swift",
        "CoreData/NSEntityDescription.swift",
        "CoreData/NSFetchRequestPublisher.swift",
        "CoreData/NSManagedObjectContext.swift",
        "CoreData/NSManagedObjectModel.swift",
        "CoreData/NSPersistedAttributeType.swift",
        "CoreData/NSPersistentContainer.swift",
        "FSEvents/FSEvent.swift",
        "FSEvents/FSPublisher.swift",
        "FSEvents/NSFileObserver.swift",
        "Foundation/ActionScheduler.swift",
        "Foundation/Bookmark.swift",
        "Foundation/Bundle.swift",
        "Foundation/Calendar.swift",
        "Foundation/DateFormatter.swift",
        "Foundation/Entitlements.swift",
        "Foundation/FileManager.swift",
        "Foundation/FileWrapper.swift",
        "Foundation/Geometry.swift",
        "Foundation/NSLock.swift",
        "Foundation/NSPredicate.swift",
        "Foundation/Process+Which.swift",
        "Foundation/Process.swift",
        "Foundation/ProcessInfo.swift",
        "Foundation/RunLoop.swift",
        "Foundation/Scanner+Characters.swift",
        "Foundation/Scanner+Data.swift",
        "Foundation/Scanner+Peek.swift",
        "Foundation/Scanner+Scan.swift",
        "Foundation/Scanner.swift",
        "Foundation/Spotlight.swift",
        "Foundation/URL.swift",
        "Mach/Dyld.swift",
        "Mach/FAT.swift",
        "Mach/LoadCommands/CodeSignature.swift",
        "Mach/LoadCommands/LoadDylibCommand.swift",
        "Mach/LoadCommands/MachLoadCommand.swift",
        "Mach/LoadCommands/RPathCommand.swift",
        "Mach/LoadCommands/UUIDLoadCommand.swift",
        "Mach/Mach+Convenience.swift",
        "Mach/Mach+Header.swift",
        "Mach/Mach+LoadCommand.swift",
        "Mach/Mach+Section.swift",
        "Mach/Mach+Segment.swift",
        "Path/Path+Bundle.swift",
        "Path/Path+Data+String.swift",
        "Path/Path+FileHandle.swift",
        "Path/Path+FileManager.swift",
        "Path/Path+Helpers.swift",
        "Path/Path+Home.swift",
        "Path/Path+URL.swift",
        "Path/Path.swift",
        "Path/PathProtocol.swift",
        "Path/RelativePath.swift",
        "Result Builders/ArrayBuilder.swift",
        "Standard/AnyAsyncSequence.swift",
        "Standard/Atomic.swift",
        "Standard/BidirectionalCollection.swift",
        "Standard/Bimap.swift",
        "Standard/Bool.swift",
        "Standard/Buildable.swift",
        "Standard/Character.swift",
        "Standard/Clocks/Clock.swift",
        "Standard/Clocks/Date+InstantProtocol.swift",
        "Standard/Clocks/ManualClock.swift",
        "Standard/Clocks/MutableClock.swift",
        "Standard/Clocks/UserClock.swift",
        "Standard/Collection+Flatten.swift",
        "Standard/Collection+Slicing.swift",
        "Standard/Collection+Trimming.swift",
        "Standard/Collection+Unique.swift",
        "Standard/Collection.swift",
        "Standard/Comparable.swift",
        "Standard/CountedSet.swift",
        "Standard/Data.swift",
        "Standard/Date.swift",
        "Standard/Dictionary.swift",
        "Standard/Duration.swift",
        "Standard/Error.swift",
        "Standard/Fatal.swift",
        "Standard/ID.swift",
        "Standard/Int.swift",
        "Standard/Interpolator.swift",
        "Standard/KeyPath.swift",
        "Standard/LazyTask.swift",
        "Standard/Never.swift",
        "Standard/Newtype.swift",
        "Standard/Normalized.swift",
        "Standard/Once.swift",
        "Standard/Optional.swift",
        "Standard/Range.swift",
        "Standard/RangeReplaceableCollection.swift",
        "Standard/Regex+Replacements.swift",
        "Standard/Regex.swift",
        "Standard/Result+CollectionOperators.swift",
        "Standard/Result+Operators.swift",
        "Standard/Result.swift",
        "Standard/Sandbox.swift",
        "Standard/Sendable.swift",
        "Standard/Sequence.swift",
        "Standard/SetAlgebra.swift",
        "Standard/Shim.swift",
        "Standard/String+HTML.swift",
        "Standard/String+Interpolation.swift",
        "Standard/String.swift",
        "Standard/TaskQueue.swift",
        "Standard/UUID.swift",
        "Standard/Unsafe.swift",
        "Standard/Updateable.swift",
        "Standard/Warn.swift",
        "Trees/BreadthFirstTraversal.swift",
        "Trees/InOrderTraversal.swift",
        "Trees/PostOrderTraversal.swift",
        "Trees/PreAndPostOrderTraversal.swift",
        "Trees/PreOrderTraversal.swift",
        "Trees/Tree.swift",
        "Trees/TreeTraversal.swift"
      ],
      "target_dependencies" : [
        "PrivateAPI"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ExtendedObjCTests",
      "module_type" : "ClangTarget",
      "name" : "ExtendedObjCTests",
      "path" : "Tests/ExtendedObjCTests",
      "sources" : [
        "RuntimeTests.m"
      ],
      "target_dependencies" : [
        "ExtendedObjC"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ExtendedObjC",
      "module_type" : "ClangTarget",
      "name" : "ExtendedObjC",
      "path" : "Sources/ExtendedObjC",
      "product_memberships" : [
        "ExtendedObjC",
        "ExtendedSwift",
        "ExtendedKit",
        "HTTP",
        "debug"
      ],
      "sources" : [
        "src/Runtime.m"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ExtendedKit",
      "module_type" : "SwiftTarget",
      "name" : "ExtendedKit",
      "path" : "Sources/ExtendedKit",
      "product_dependencies" : [
        "Logging"
      ],
      "product_memberships" : [
        "ExtendedKit",
        "debug"
      ],
      "sources" : [
        "AppSession/AppSession.swift",
        "CLLocation.swift",
        "Cocoa/NSActionHandler.swift",
        "Cocoa/NSMenu.swift",
        "Cocoa/NSTextField.swift",
        "CoreData/Fetch.swift",
        "CoreData/FetchFilter.swift",
        "CoreData/FetchObserver.swift",
        "CoreData/FetchOne.swift",
        "CoreData/FetchResults.swift",
        "CoreData/Fetchable.swift",
        "CoreData/NSFetchRequest.swift",
        "ExtendedKit.swift",
        "Logging/CoreDataLogHandler.swift",
        "Logging/LogEntry.swift",
        "Logging/LogRedactor.swift",
        "Logging/Logger.Metadata.swift",
        "Logging/Logger.swift",
        "Logging/OSLogHandler.swift",
        "Map/MapCluster.swift",
        "Map/MapItem.swift",
        "Map/MapView.swift",
        "Map/_MapView.swift",
        "MapKit/MKCoordinateRegion.swift",
        "Path+NSWorkspace.swift",
        "Platform.swift",
        "SwiftUI/Alert.swift",
        "SwiftUI/Angle.swift",
        "SwiftUI/Binding.swift",
        "SwiftUI/EdgeInsets.swift",
        "SwiftUI/InterfaceOrientation/InterfaceHostingController.swift",
        "SwiftUI/InterfaceOrientation/InterfaceOrientation.swift",
        "SwiftUI/InterfaceOrientation/InterfacePreferenceKeys.swift",
        "SwiftUI/InterfaceOrientation/View+InterfaceOrientation.swift",
        "SwiftUI/PartialCapsule.swift",
        "SwiftUI/Path.swift",
        "SwiftUI/PathControl.swift",
        "SwiftUI/ProxyTransferable.swift",
        "SwiftUI/Section.swift",
        "SwiftUI/Staged.swift",
        "SwiftUI/Symbol+SwiftUI.swift",
        "SwiftUI/TextStyle.swift",
        "SwiftUI/UnitPoint.swift",
        "SwiftUI/View.swift",
        "Symbol.swift",
        "XML/XMLNode.swift"
      ],
      "target_dependencies" : [
        "ExtendedSwift",
        "ExtendedObjC",
        "PrivateAPI"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/24] Write swift-version-2F0A5646E1D333AE.txt
[1/24] Write sources
[2/24] Write debug-entitlement.plist
[3/24] Compiling _NumericsShims _NumericsShims.c
[4/24] Write sources
[7/34] Compiling RealModule ElementaryFunctions.swift
[8/35] Compiling RealModule Float16+Real.swift
[9/35] Compiling RealModule Real.swift
[10/35] Compiling RealModule Float80+Real.swift
[11/35] Compiling RealModule Float+Real.swift
[12/35] Compiling RealModule AugmentedArithmetic.swift
[13/35] Compiling RealModule ApproximateEquality.swift
[14/35] Compiling RealModule AlgebraicField.swift
[15/35] Emitting module RealModule
[16/35] Compiling RealModule Double+Real.swift
[17/35] Compiling RealModule RealFunctions.swift
/Users/admin/builder/spi-builder-workspace/Sources/PrivateAPI/src/GregorianDate+Formatters.m:198:38: error: non-void function '_GDWriteInt' should return a value [-Wreturn-mismatch]
  198 |         if (magnitude > maxLength) { return; }
      |                                      ^
1 error generated.
[17/40] Compiling GregorianDate+Formatters.m
[17/40] Compiling Runtime.m
[17/40] Compiling NSUUID+Time.m
[17/40] Compiling JSON+Serialize.m
[17/40] Compiling GregorianDate+Format.m
[17/40] Compiling AppSession.m
[17/40] Compiling GregorianDate.m
[17/40] Compiling SignalSafe.m
[17/40] Compiling JSON.m
[18/40] Compiling Logging MetadataProvider.swift
[19/40] Compiling Logging LogHandler.swift
[20/40] Emitting module Logging
[21/40] Compiling Logging Locks.swift
Fetching https://github.com/apple/swift-algorithms from cache
Fetching https://github.com/apple/swift-log from cache
Fetched https://github.com/apple/swift-algorithms from cache (0.52s)
Fetched https://github.com/apple/swift-log from cache (0.64s)
Computing version for https://github.com/apple/swift-algorithms
Computed https://github.com/apple/swift-algorithms at 1.2.1 (1.60s)
Fetching https://github.com/apple/swift-numerics.git from cache
Fetched https://github.com/apple/swift-numerics.git from cache (0.43s)
Computing version for https://github.com/apple/swift-numerics.git
Computed https://github.com/apple/swift-numerics.git at 1.0.3 (1.06s)
Computing version for https://github.com/apple/swift-log
Computed https://github.com/apple/swift-log at 1.6.3 (0.47s)
Creating working copy for https://github.com/apple/swift-log
Working copy of https://github.com/apple/swift-log resolved at 1.6.3
Creating working copy for https://github.com/apple/swift-numerics.git
Working copy of https://github.com/apple/swift-numerics.git resolved at 1.0.3
Creating working copy for https://github.com/apple/swift-algorithms
Working copy of https://github.com/apple/swift-algorithms resolved at 1.2.1
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/1] Planning build
Building for debugging...
[0/19] Write sources
[2/19] Copying entities.json
[3/19] Write sources
[4/19] Write swift-version-2F0A5646E1D333AE.txt
[4/19] Write sources
/Users/admin/builder/spi-builder-workspace/Sources/PrivateAPI/src/JSON+Serialize.m:270:1: warning: non-void function does not return a value [-Wreturn-type]
  270 | }
      | ^
1 warning generated.
[7/19] Compiling JSON+Serialize.m
[8/19] Compiling JSON.m
/Users/admin/builder/spi-builder-workspace/Sources/PrivateAPI/src/GregorianDate+Formatters.m:198:38: error: non-void function '_GDWriteInt' should return a value [-Wreturn-mismatch]
  198 |         if (magnitude > maxLength) { return; }
      |                                      ^
1 error generated.
[8/19] Compiling GregorianDate+Formatters.m
[8/21] Compiling NSUUID+Time.m
[8/21] Compiling SignalSafe.m
[8/22] Compiling GregorianDate+Format.m
[8/22] Compiling GregorianDate.m
[8/22] Compiling Runtime.m
[8/22] Compiling AppSession.m
BUILD FAILURE 6.1 macosSpm