Build Information
Successful build of RCDataKit, reference 1.0.2 (9a1e86), with Swift 6.4 for macOS (SPM) on 22 Sep 2026 05:05:31 UTC.
Swift 6 data race errors: 0
Build Command
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64Build Log
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RunAll
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Builder version: 5.1.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/RCCoop/RCDataKit.git
Reference: 1.0.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/RCCoop/RCDataKit
* tag 1.0.2 -> FETCH_HEAD
HEAD is now at 9a1e868 Update README.md
Cloned https://github.com/RCCoop/RCDataKit.git
Revision (git rev-parse @):
9a1e868f327794cf8693532ef49bca233097135e
SUCCESS checkout https://github.com/RCCoop/RCDataKit.git at 1.0.2
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.4
Building package at path: $PWD
https://github.com/RCCoop/RCDataKit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Pre-planning 1 / 95]
[Planning deferred tasks]
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Build complete! (11.91 sec)
Model2.xcdatamodel: note: Model Model2 version checksum: E1zZ7FmrknNDlNJfy25xKQRiA/ztUEHhiJx2kItcHns=
Model4.xcdatamodel: note: Model Model4 version checksum: Vv9Hb2Yr+IQLbXehfp+HGy4/Z5KijnASTXuicLvKMSw=
Model.xcdatamodel: note: Model Model version checksum: SAz9xEqqbMHxsyBxQa2ljz+b+Sl+JTE/qhNPv8RGn3g=
Model3.xcdatamodel: note: Model Model3 version checksum: 0LmYhsW64IdOAeTUufQKgOBN9PsKr29SMmt0RcvrRHE=
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Internal Utilities/FatalError+Testing.swift:15:16: [1;33mwarning: [1;39mstatic property 'fatalErrorClosure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m13 |[0;0m struct FatalErrorUtility {
[0;36m14 |[0;0m // Called by the custom implementation of `fatalError`.
[0;36m15 |[0;0m static var fatalErrorClosure: (String, StaticString, UInt) -> Never = defaultFatalErrorClosure
[0;36m|[0;0m |- [1;33mwarning: [1;39mstatic property 'fatalErrorClosure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m|[0;0m |- [1;39mnote: [1;39mconvert 'fatalErrorClosure' to a 'let' constant to make 'Sendable' shared state immutable[0;0m
[0;36m|[0;0m |- [1;39mnote: [1;39madd '@MainActor' to make static property 'fatalErrorClosure' part of global actor 'MainActor'[0;0m
[0;36m|[0;0m `- [1;39mnote: [1;39mdisable concurrency-safety checks if accesses are protected by an external synchronization mechanism[0;0m
[0;36m16 |[0;0m
[0;36m17 |[0;0m // backup of the original Swift `fatalError`
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Internal Utilities/FatalError+Testing.swift:18:24: [1;33mwarning: [1;39mstatic property 'defaultFatalErrorClosure' is not concurrency-safe because non-'Sendable' type '(String, StaticString, UInt) -> Never' may have shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m16 |[0;0m
[0;36m17 |[0;0m // backup of the original Swift `fatalError`
[0;36m18 |[0;0m private static let defaultFatalErrorClosure = { Swift.fatalError($0, file: $1, line: $2) }
[0;36m|[0;0m `- [1;33mwarning: [1;39mstatic property 'defaultFatalErrorClosure' is not concurrency-safe because non-'Sendable' type '(String, StaticString, UInt) -> Never' may have shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m19 |[0;0m
[0;36m20 |[0;0m /// Replace the `fatalError` global function with something else.
<unknown>:0: [1;39mnote: [1;39ma function type must be marked '@Sendable' to conform to 'Sendable'[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Internal Utilities/FatalError+Testing.swift:18:24: [1;39mnote: [1;39madd '@MainActor' to make static property 'defaultFatalErrorClosure' part of global actor 'MainActor'[0;0m
[0;36m16 |[0;0m
[0;36m17 |[0;0m // backup of the original Swift `fatalError`
[0;36m18 |[0;0m private static let defaultFatalErrorClosure = { Swift.fatalError($0, file: $1, line: $2) }
[0;36m|[0;0m |- [1;39mnote: [1;39madd '@MainActor' to make static property 'defaultFatalErrorClosure' part of global actor 'MainActor'[0;0m
[0;36m|[0;0m `- [1;39mnote: [1;39mdisable concurrency-safety checks if accesses are protected by an external synchronization mechanism[0;0m
[0;36m19 |[0;0m
[0;36m20 |[0;0m /// Replace the `fatalError` global function with something else.
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/PersistentHistoryTracking/PersistentHistoryMerger.swift:42:66: [1;33mwarning: [1;39mcapture of 'tx' with non-Sendable type 'NSPersistentHistoryTransaction' in a '@Sendable' closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m40 |[0;0m for tx in transactions {
[0;36m41 |[0;0m viewContext.performAndWait {
[0;36m42 |[0;0m viewContext.mergeChanges(fromContextDidSave: tx.objectIDNotification())
[0;36m|[0;0m `- [1;33mwarning: [1;39mcapture of 'tx' with non-Sendable type 'NSPersistentHistoryTransaction' in a '@Sendable' closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m43 |[0;0m }
[0;36m44 |[0;0m }
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/CoreData.framework/Headers/NSPersistentHistoryTransaction.h:21:12: [1;39mnote: [1;39mclass 'NSPersistentHistoryTransaction' does not conform to the 'Sendable' protocol[0;0m
[0;36m19 |[0;0m
[0;36m20 |[0;0m API_AVAILABLE(macosx(10.13),ios(11.0),tvos(11.0),watchos(4.0))
[0;36m21 |[0;0m @interface NSPersistentHistoryTransaction : NSObject <NSCopying>
[0;36m|[0;0m `- [1;39mnote: [1;39mclass 'NSPersistentHistoryTransaction' does not conform to the 'Sendable' protocol[0;0m
[0;36m22 |[0;0m
[0;36m23 |[0;0m + (nullable NSEntityDescription *)entityDescriptionWithContext:(NSManagedObjectContext *)context API_AVAILABLE(macosx(10.15),ios(13.0),tvos(13.0),watchos(6.0));
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/PersistentHistoryTracking/PersistentHistoryMerger.swift:5:1: [1;33mwarning: [1;39madd '@preconcurrency' to suppress 'Sendable'-related warnings from module 'CoreData'[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/add-preconcurrency-import\AddPreconcurrencyImport]8;;\]
[0;36m3 |[0;0m //
[0;36m4 |[0;0m
[0;36m5 |[0;0m import CoreData
[0;36m|[0;0m `- [1;33mwarning: [1;39madd '@preconcurrency' to suppress 'Sendable'-related warnings from module 'CoreData'[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/add-preconcurrency-import\AddPreconcurrencyImport]8;;\]
[0;36m6 |[0;0m import Foundation
[0;36m7 |[0;0m
[#AddPreconcurrencyImport]: <https://docs.swift.org/compiler/documentation/diagnostics/add-preconcurrency-import>
[#SendableClosureCaptures]: <https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures>
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Internal Utilities/FatalError+Testing.swift:15:16: [1;33mwarning: [1;39mstatic property 'fatalErrorClosure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m13 |[0;0m struct FatalErrorUtility {
[0;36m14 |[0;0m // Called by the custom implementation of `fatalError`.
[0;36m15 |[0;0m static var fatalErrorClosure: (String, StaticString, UInt) -> Never = defaultFatalErrorClosure
[0;36m|[0;0m |- [1;33mwarning: [1;39mstatic property 'fatalErrorClosure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m|[0;0m |- [1;39mnote: [1;39mconvert 'fatalErrorClosure' to a 'let' constant to make 'Sendable' shared state immutable[0;0m
[0;36m|[0;0m |- [1;39mnote: [1;39madd '@MainActor' to make static property 'fatalErrorClosure' part of global actor 'MainActor'[0;0m
[0;36m|[0;0m `- [1;39mnote: [1;39mdisable concurrency-safety checks if accesses are protected by an external synchronization mechanism[0;0m
[0;36m16 |[0;0m
[0;36m17 |[0;0m // backup of the original Swift `fatalError`
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Internal Utilities/FatalError+Testing.swift:18:24: [1;33mwarning: [1;39mstatic property 'defaultFatalErrorClosure' is not concurrency-safe because non-'Sendable' type '(String, StaticString, UInt) -> Never' may have shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m16 |[0;0m
[0;36m17 |[0;0m // backup of the original Swift `fatalError`
[0;36m18 |[0;0m private static let defaultFatalErrorClosure = { Swift.fatalError($0, file: $1, line: $2) }
[0;36m|[0;0m `- [1;33mwarning: [1;39mstatic property 'defaultFatalErrorClosure' is not concurrency-safe because non-'Sendable' type '(String, StaticString, UInt) -> Never' may have shared mutable state; this is an error in the Swift 6 language mode[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
[0;36m19 |[0;0m
[0;36m20 |[0;0m /// Replace the `fatalError` global function with something else.
<unknown>:0: [1;39mnote: [1;39ma function type must be marked '@Sendable' to conform to 'Sendable'[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Internal Utilities/FatalError+Testing.swift:18:24: [1;39mnote: [1;39madd '@MainActor' to make static property 'defaultFatalErrorClosure' part of global actor 'MainActor'[0;0m
[0;36m16 |[0;0m
[0;36m17 |[0;0m // backup of the original Swift `fatalError`
[0;36m18 |[0;0m private static let defaultFatalErrorClosure = { Swift.fatalError($0, file: $1, line: $2) }
[0;36m|[0;0m |- [1;39mnote: [1;39madd '@MainActor' to make static property 'defaultFatalErrorClosure' part of global actor 'MainActor'[0;0m
[0;36m|[0;0m `- [1;39mnote: [1;39mdisable concurrency-safety checks if accesses are protected by an external synchronization mechanism[0;0m
[0;36m19 |[0;0m
[0;36m20 |[0;0m /// Replace the `fatalError` global function with something else.
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Basic Protocols/ModelVersion.swift:134:25: [1;33mwarning: [1;39mcapture of 'preMigration' with non-Sendable type 'Self.MigrationHandler' (aka '(NSManagedObjectContext) throws -> ()') in a '@Sendable' closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m132 |[0;0m let context = container.newBackgroundContext()
[0;36m133 |[0;0m try context.performAndWait {
[0;36m134 |[0;0m try preMigration(context)
[0;36m|[0;0m |- [1;33mwarning: [1;39mcapture of 'preMigration' with non-Sendable type 'Self.MigrationHandler' (aka '(NSManagedObjectContext) throws -> ()') in a '@Sendable' closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m|[0;0m `- [1;39mnote: [1;39ma function type must be marked '@Sendable' to conform to 'Sendable'[0;0m
[0;36m135 |[0;0m try context.save()
[0;36m136 |[0;0m }
/Users/admin/builder/spi-builder-workspace/Sources/RCDataKit/Basic Protocols/ModelVersion.swift:148:25: [1;33mwarning: [1;39mcapture of 'postMigration' with non-Sendable type 'Self.MigrationHandler' (aka '(NSManagedObjectContext) throws -> ()') in a '@Sendable' closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m146 |[0;0m let context = container.newBackgroundContext()
[0;36m147 |[0;0m try context.performAndWait {
[0;36m148 |[0;0m try postMigration(context)
[0;36m|[0;0m |- [1;33mwarning: [1;39mcapture of 'postMigration' with non-Sendable type 'Self.MigrationHandler' (aka '(NSManagedObjectContext) throws -> ()') in a '@Sendable' closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m|[0;0m `- [1;39mnote: [1;39ma function type must be marked '@Sendable' to conform to 'Sendable'[0;0m
[0;36m149 |[0;0m try context.saveIfNeeded()
[0;36m150 |[0;0m }
[#SendableClosureCaptures]: <https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures>
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "RCDataKit",
"name" : "RCDataKit",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
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{
"name" : "tvos",
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"products" : [
{
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"targets" : [
"RCDataKit"
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"type" : {
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}
}
],
"targets" : [
{
"c99name" : "RCDataKitTests",
"module_type" : "SwiftTarget",
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"path" : "Tests/RCDataKitTests",
"resources" : [
{
"path" : "/Users/admin/builder/spi-builder-workspace/Tests/RCDataKitTests/TestsDataModel/Sample Data/OldStudentsStore.sqlite",
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{
"path" : "/Users/admin/builder/spi-builder-workspace/Tests/RCDataKitTests/TestsDataModel/Sample Data/SchoolsData.json",
"rule" : {
"copy" : {
}
}
},
{
"path" : "/Users/admin/builder/spi-builder-workspace/Tests/RCDataKitTests/TestsDataModel/Sample Data/TestSubjects.csv",
"rule" : {
"copy" : {
}
}
}
],
"sources" : [
"Stacks/ModelAuthors.swift",
"Stacks/ModelVersions.swift",
"Stacks/TestModelManager.swift",
"Stacks/TestingStacks.swift",
"TestsDataModel/ImportedDataTypes/SchoolImport.swift",
"TestsDataModel/ImportedDataTypes/StudentImport.swift",
"TestsDataModel/ImportedDataTypes/TeacherImport.swift",
"TestsDataModel/ImportedDataTypes/TestSubjectImport.swift",
"TestsDataModel/ManagedObjectTypes/ManualModelCreation.swift",
"TestsDataModel/ManagedObjectTypes/Person.swift",
"TestsDataModel/ManagedObjectTypes/School.swift",
"TestsDataModel/ManagedObjectTypes/Student.swift",
"TestsDataModel/ManagedObjectTypes/Teacher.swift",
"TestsDataModel/ManagedObjectTypes/TestSubject.swift",
"TestsDataModel/Sample Data/SchoolsData.swift",
"TestsDataModel/Sample Data/TestSubjectsData.swift",
"XCTestCaseHelpers/Sleep.swift",
"XCTests/Internal Utilities Tests/KeyPathTests.swift",
"XCTests/Internal Utilities Tests/XCTestCase+FatalError.swift",
"XCTests/NSExtension Tests/FetchRequestBuilderTests.swift",
"XCTests/NSExtension Tests/ManagedObjectContextTests.swift",
"XCTests/NSExtension Tests/PredicateTests.swift",
"XCTests/RCDataKit Protocol Tests/PersistableTests.swift",
"XCTests/RCDataKit Protocol Tests/UpdatableManagedObjectTests.swift",
"XCTests/System Tests/PersistentHistoryTest.swift",
"XCTests/System Tests/StagedMigrationTest.swift"
],
"target_dependencies" : [
"RCDataKit"
],
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},
{
"c99name" : "RCDataKit",
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"product_memberships" : [
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"Basic Protocols/ModelVersion.swift",
"Basic Protocols/Persistable.swift",
"Basic Protocols/TransactionAuthor.swift",
"Basic Protocols/UpdatableManagedObject.swift",
"Data Stack/DataStack Implementations/BasicDataStack.swift",
"Data Stack/DataStack Implementations/PreviewStack.swift",
"Data Stack/DataStack Implementations/TestingStack.swift",
"Data Stack/DataStackProtocol.swift",
"Data Stack/Helpers/DataStackLogger.swift",
"Data Stack/Helpers/PersistentHistoryTrackingOptions.swift",
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"Internal Utilities/FatalError+Testing.swift",
"Internal Utilities/KeyPathString.swift",
"NSExtensions/NSFetchRequest+Builders.swift",
"NSExtensions/NSManagedObjectContext+.swift",
"NSExtensions/NSManagedObjectModel+.swift",
"NSExtensions/NSPersistentContainer+Load.swift",
"NSExtensions/NSPredicate+.swift",
"NSExtensions/NSSortDescriptor+.swift",
"NSExtensions/TypedObjectID.swift",
"NSExtensions/UTType+ManagedObjectModel.swift",
"PersistentHistoryTracking/PersistentHistoryCleaner.swift",
"PersistentHistoryTracking/PersistentHistoryFetcher.swift",
"PersistentHistoryTracking/PersistentHistoryMerger.swift",
"PersistentHistoryTracking/PersistentHistoryTimestampManager.swift",
"PersistentHistoryTracking/PersistentHistoryTracker.swift"
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],
"tools_version" : "5.10"
}
Done.