Probing – Build Information – Swift Package Index

Build Information

Failed to build Probing, reference 2.0.0 (4bc510), with Swift 6.4 for macOS (SPM) on 23 Sep 2026 10:29:11 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/NSFatalError/Probing.git
Reference: 2.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/NSFatalError/Probing
 * tag               2.0.0      -> FETCH_HEAD
HEAD is now at 4bc5104 Prepared package for Swift 6.2 (#8)
Submodule path 'Macros/Dependencies/PrincipleMacros': checked out '85aab93496550f03b8888a96598fe06ad7685a53'
Submodule 'Macros/Dependencies/PrincipleMacros' (https://github.com/NSFatalError/PrincipleMacros) registered for path 'Macros/Dependencies/PrincipleMacros'
Cloning into '/Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros'...
Cloned https://github.com/NSFatalError/Probing.git
Revision (git rev-parse @):
4bc51040f17da842d73c24141d65fc000343fd73
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/NSFatalError/Probing.git at 2.0.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/NSFatalError/Probing.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Provisioning 3 / 12]
[Pre-planning 1 / 271]
[Planning deferred tasks]
[57 / 112]
[60 / 115] PrincipleConcurrency
[67 / 122] PrincipleConcurrency
[73 / 122] PrincipleCollections
Fetching https://github.com/NSFatalError/Principle
Fetching https://github.com/swiftlang/swift-syntax
[1/529] Fetching principle
[530/80543] Fetching principle, swift-syntax
Fetched https://github.com/swiftlang/swift-syntax (5.37s)
Fetched https://github.com/NSFatalError/Principle (5.37s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 602.0.0 (8.27s)
Computing version for https://github.com/NSFatalError/Principle
Computed https://github.com/NSFatalError/Principle at 2.0.0 (0.55s)
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 602.0.0
Creating working copy for https://github.com/NSFatalError/Principle
Working copy of https://github.com/NSFatalError/Principle resolved at 2.0.0
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/602.0.0/swiftlang-6.4.0.34.1-macosx27.0-MacroSupport.zip
Downloaded https://download.swift.org/prebuilts/swift-syntax/602.0.0/swiftlang-6.4.0.34.1-macosx27.0-MacroSupport.zip (0.22s)
warning: 'spi-builder-workspace': found 16 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/LICENSE
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Package.resolved
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Package.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/README.md
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Builders/EnumCaseCallExprBuilderTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Builders/SwitchExprBuilderTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parameters/ParameterExtractorTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parsers/EnumCasesParserTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parsers/PropertiesListTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parsers/PropertiesParserTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/CamelCaseNotationTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/ClosureExprSyntaxTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/ClosureTypeSyntaxTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/ExprSyntaxTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/GlobalActorIsolationTests.swift
    /Users/admin/builder/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/TypeSyntaxTests.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/SingleUseTransfer.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile SingleUseTransfer.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/SingleUseTransfer.swift:86:20: [1;31merror: [1;39mreturning 'wrapped' as a 'sending' result risks causing data races[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/region-isolation\RegionIsolation]8;;\]
[0;36m84 |[0;0m         case let .some(wrapped):
[0;36m85 |[0;0m             self = .init()
[0;36m86 |[0;0m             return wrapped
   [0;36m|[0;0m                    |- [1;31merror: [1;39mreturning 'wrapped' as a 'sending' result risks causing data races[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/region-isolation\RegionIsolation]8;;\]
   [0;36m|[0;0m                    `- [1;39mnote: [1;39mreturning 'wrapped' risks causing data races since the caller assumes that 'wrapped' can be safely sent to other isolation domains[0;0m
[0;36m87 |[0;0m         }
[0;36m88 |[0;0m     }
[#RegionIsolation]: <https://docs.swift.org/compiler/documentation/diagnostics/region-isolation>
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c /Users/admin/builder/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/DeadlineExceededError.swift -primary-file /Users/admin/builder/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/SingleUseTransfer.swift /Users/admin/builder/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/TaskTimeLimit.swift /Users/admin/builder/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/TimeoutError.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/SingleUseTransfer.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/SingleUseTransfer.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/SingleUseTransfer.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/SingleUseTransfer.dia -target arm64-apple-macos15.0 -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/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/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/PrincipleConcurrency-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\=5 -suppress-warnings -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-upcoming-feature ExistentialAny -enable-upcoming-feature MemberImportVisibility -enable-upcoming-feature NonisolatedNonsendingByDefault -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -user-module-version 2.0.0 -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/Principle.build/Debug/PrincipleConcurrency-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name PrincipleConcurrency -package-name principle -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/PrincipleConcurrency_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 -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/SingleUseTransfer.o -debug-module-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/PrincipleConcurrency.swiftmodule -index-unit-output-path /Principle.build/Debug/PrincipleConcurrency-t.build/Objects-normal/arm64/SingleUseTransfer.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm