SwiftResilience – Build Information

Build Information

Failed to build SwiftResilience, reference main (35a1bf), with Swift 6.4 for macOS (SPM) on 30 Sep 2026 10:01:16 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 5.1.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/meetbb/SwiftResilience.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/meetbb/SwiftResilience
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 35a1bf5 Added important high-level documentation for users.
Cloned https://github.com/meetbb/SwiftResilience.git
Revision (git rev-parse @):
35a1bf56a5173c453cb002d49fdaed266b3f0ef7
SUCCESS checkout https://github.com/meetbb/SwiftResilience.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/meetbb/SwiftResilience.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Planning deferred tasks]
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error: SwiftCompile normal arm64 failed with a nonzero exit code. Command line:     cd /Users/admin/builder

/Users/admin/builder/spi-builder-workspace/SwiftResilience/BackgroundQueue/BackgroundQueueProtocols.swift:45:11: [1;31merror: [1;39m'BGTask' is unavailable in macOS[0;0m
 [0;36m43 |[0;0m /// `BGTask` already exposes `expirationHandler` and `setTaskCompleted(success:)`.
 [0;36m44 |[0;0m /// This extension adds the protocol conformance label — no implementation needed.
 [0;36m45 |[0;0m extension [4;39mBGTask[0;0m: BackgroundTaskHandling {}
    [0;36m|[0;0m           `- [1;31merror: [1;39m'BGTask' is unavailable in macOS[0;0m
 [0;36m46 |[0;0m
 [0;36m47 |[0;0m // MARK: - BackgroundTaskScheduling
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/BackgroundTasks.framework/Headers/BGTask.h:17:12: [1;39mnote: [1;39m'BGTask' has been explicitly marked unavailable here[0;0m
 [0;36m15 |[0;0m /// background.
 [0;36m16 |[0;0m BG_EXTERN API_AVAILABLE(ios(13.0), tvos(13.0)) API_UNAVAILABLE(macos) API_UNAVAILABLE(watchos)
 [0;36m17 |[0;0m @interface BGTask : NSObject
    [0;36m|[0;0m            `- [1;39mnote: [1;39m'BGTask' has been explicitly marked unavailable here[0;0m
 [0;36m18 |[0;0m
 [0;36m19 |[0;0m /// The string identifier of the task.
/Users/admin/builder/spi-builder-workspace/SwiftResilience/BackgroundQueue/BackgroundQueueProtocols.swift:98:32: [1;31merror: [1;39m'BGTaskRequest' is unavailable in macOS[0;0m
 [0;36m96 |[0;0m     /// - Throws: `BGTaskScheduler.Error` if the identifier is not registered
 [0;36m97 |[0;0m     ///   or if the app has reached the system request limit.
 [0;36m98 |[0;0m     func submit(_ taskRequest: [4;39mBGTaskRequest[0;0m) throws
    [0;36m|[0;0m                                `- [1;31merror: [1;39m'BGTaskRequest' is unavailable in macOS[0;0m
 [0;36m99 |[0;0m }
[0;36m100 |[0;0m
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/BackgroundTasks.framework/Headers/BGTaskRequest.h:16:12: [1;39mnote: [1;39m'BGTaskRequest' has been explicitly marked unavailable here[0;0m
 [0;36m14 |[0;0m /// Do not instantiate instances of this class directly. Instead, use one of its concrete subclasses.
 [0;36m15 |[0;0m BG_EXTERN API_AVAILABLE(ios(13.0), tvos(13.0)) API_UNAVAILABLE(macos) API_UNAVAILABLE(watchos)
 [0;36m16 |[0;0m @interface BGTaskRequest : NSObject <NSCopying>
    [0;36m|[0;0m            `- [1;39mnote: [1;39m'BGTaskRequest' has been explicitly marked unavailable here[0;0m
 [0;36m17 |[0;0m
 [0;36m18 |[0;0m /// The identifier of the task associated with the request.
/Users/admin/builder/spi-builder-workspace/SwiftResilience/BackgroundQueue/BackgroundQueueProtocols.swift:121:23: [1;33mwarning: [1;39mstatic property 'shared' is not concurrency-safe because non-'Sendable' type 'SystemBackgroundTaskScheduler' 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;36m116 |[0;0m /// )
[0;36m117 |[0;0m /// ```
[0;36m118 |[0;0m public final class SystemBackgroundTaskScheduler: BackgroundTaskScheduling {
    [0;36m|[0;0m                    `- [1;39mnote: [1;39mclass 'SystemBackgroundTaskScheduler' does not conform to the 'Sendable' protocol[0;0m
[0;36m119 |[0;0m
[0;36m120 |[0;0m     /// The shared singleton. Use this in all production code.
[0;36m121 |[0;0m     public static let shared = SystemBackgroundTaskScheduler()
    [0;36m|[0;0m                       |- [1;33mwarning: [1;39mstatic property 'shared' is not concurrency-safe because non-'Sendable' type 'SystemBackgroundTaskScheduler' 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;36m|[0;0m                       |- [1;39mnote: [1;39madd '@MainActor' to make static property 'shared' 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;36m122 |[0;0m
[0;36m123 |[0;0m     private init() {}
/Users/admin/builder/spi-builder-workspace/SwiftResilience/BackgroundQueue/BackgroundQueueProtocols.swift:141:39: [1;31merror: [1;39m'BGTaskRequest' is unavailable in macOS[0;0m
[0;36m139 |[0;0m     }
[0;36m140 |[0;0m
[0;36m141 |[0;0m     public func submit(_ taskRequest: [4;39mBGTaskRequest[0;0m) throws {
    [0;36m|[0;0m                                       `- [1;31merror: [1;39m'BGTaskRequest' is unavailable in macOS[0;0m
[0;36m142 |[0;0m         try BGTaskScheduler.shared.submit(taskRequest)
[0;36m143 |[0;0m     }
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/BackgroundTasks.framework/Headers/BGTaskRequest.h:16:12: [1;39mnote: [1;39m'BGTaskRequest' has been explicitly marked unavailable here[0;0m
 [0;36m14 |[0;0m /// Do not instantiate instances of this class directly. Instead, use one of its concrete subclasses.
 [0;36m15 |[0;0m BG_EXTERN API_AVAILABLE(ios(13.0), tvos(13.0)) API_UNAVAILABLE(macos) API_UNAVAILABLE(watchos)
 [0;36m16 |[0;0m @interface BGTaskRequest : NSObject <NSCopying>
    [0;36m|[0;0m            `- [1;39mnote: [1;39m'BGTaskRequest' has been explicitly marked unavailable here[0;0m
 [0;36m17 |[0;0m
 [0;36m18 |[0;0m /// The identifier of the task associated with the request.
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/SwiftResilience/BackgroundQueue/BackgroundQueueDrainer.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/BackgroundQueue/BackgroundQueueProtocols.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/ConcurrencySafety/AuthenticatedRequestEngine.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/ConcurrencySafety/TokenProvider.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/ConcurrencySafety/TokenRefreshCoordinator.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Networking/AsyncRequestEngine.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Networking/HTTPMethod.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Networking/NetworkError.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Networking/NetworkRequest.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Networking/NetworkSession.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Networking/RequestIdentity.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Observability/RequestEvent.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Observability/RequestMetricsCollector.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/OfflineQueue/DiskQueueStore.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/OfflineQueue/OfflineQueueEngine.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/OfflineQueue/QueueEntry.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/OfflineQueue/QueueableRequest.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/OfflineQueue/ReachabilityMonitor.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Retry/ExponentialRetryPolicy.swift /Users/admin/builder/spi-builder-workspace/SwiftResilience/Retry/RetryPolicy.swift -target arm64-apple-macos13.0 -module-can-import-version BackgroundTasks 1.0.0 1.0.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/Objects-normal/arm64/SwiftResilience-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk 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-validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SwiftResilience -package-name spi_builder_workspace -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/Objects-normal/arm64/SwiftResilience_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-macos27.0 -target-sdk-version 27.0 -target-sdk-name macosx27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -emit-module-doc-path 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/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/Objects-normal/arm64/SwiftResilience-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/Objects-normal/arm64/SwiftResilience.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftResilience.build/Debug/SwiftResilience-t.build/Objects-normal/arm64/SwiftResilience.abi.json
error: Build failed
BUILD FAILURE 6.4 macosSpm