Swift Package Index

Build Information

Failed to build SwiftyXPC, reference 0.5.4 (00853d), with Swift 6.4 for macOS (SPM) on 21 Sep 2026 04:13:27 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: 5.1.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/CharlesJS/SwiftyXPC.git
Reference: 0.5.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/CharlesJS/SwiftyXPC
 * tag               0.5.4      -> FETCH_HEAD
HEAD is now at 00853dd Clean up concurrency for Swift 6
Cloned https://github.com/CharlesJS/SwiftyXPC.git
Revision (git rev-parse @):
00853ddb5e041975d344f14b23e589b4aaed1f4e
SUCCESS checkout https://github.com/CharlesJS/SwiftyXPC.git at 0.5.4
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/CharlesJS/SwiftyXPC.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 / 124]
[Planning deferred tasks]
[30 / 54]
[31 / 55] SwiftyXPC
[41 / 95]
[45 / 95]
[49 / 95]
[50 / 95]
[53 / 95]
[55 / 95]
[58 / 95]
[60 / 95]
[71 / 95] SwiftyXPC
error: SwiftCompile normal arm64 failed with a nonzero exit code. Command line:     cd /Users/admin/builder

/Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCConnection.swift:71:6: error: stored properties cannot be marked unavailable with '@available'
 69 |     private let connection: xpc_connection_t
 70 |
 71 |     @available(macOS, obsoleted: 12.0)
    |      `- error: stored properties cannot be marked unavailable with '@available'
 72 |     private let codeSigningRequirement: String?
 73 |
/Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCConnection.swift:513:9: warning: unstructured throwing task created by 'init(name:priority:operation:)' is not used, which may accidentally ignore errors thrown inside the task [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/no-use-throwing-unstructured-task\NoUseUnstructuredThrowingTask]8;;\]
511 |         let wrapper = SendableWrapper(event: event)
512 |
513 |         Task {
    |         |- warning: unstructured throwing task created by 'init(name:priority:operation:)' is not used, which may accidentally ignore errors thrown inside the task [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/no-use-throwing-unstructured-task\NoUseUnstructuredThrowingTask]8;;\]
    |         `- note: to silence this warning, handle the error inside the task, or store/discard the task value explicitly
514 |             let event = wrapper.event
515 |
[#NoUseUnstructuredThrowingTask]: <https://docs.swift.org/compiler/documentation/diagnostics/no-use-throwing-unstructured-task>
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/Sources/SwiftyXPC/Extensions/String+SwiftyXPC.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCConnection.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCDecoder.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCEncoder.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCEndpoint.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCError.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCErrorRegistry.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCFileDescriptor.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCListener.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCNull.swift /Users/admin/builder/spi-builder-workspace/Sources/SwiftyXPC/XPCType.swift -target arm64-apple-macos12.0 -disable-cross-import-overlay-search -swift-module-cross-import Darwin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/Darwin.swiftcrossimport/xlocale.swiftoverlay -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/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftExplicitPrecompiledModules -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -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/SwiftyXPC.build/Debug/SwiftyXPC-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SwiftyXPC -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC_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 /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftyXPC.build/Debug/SwiftyXPC-t.build/Objects-normal/arm64/SwiftyXPC.abi.json
error: Build failed
BUILD FAILURE 6.4 macosSpm