FeatureFlagsController – Build Information

Build Information

Failed to build FeatureFlagsController, reference master (2a1e5e), with Swift 6.4 for macOS (SPM) on 18 Sep 2026 13:15:13 UTC.

Build Command

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

Build 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/DataDog/FeatureFlagsController-iOS.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/DataDog/FeatureFlagsController-iOS
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 2a1e5ee Version 1.0.1
Cloned https://github.com/DataDog/FeatureFlagsController-iOS.git
Revision (git rev-parse @):
2a1e5ee046e2754d04beb73cd258f4ca52d502a6
SUCCESS checkout https://github.com/DataDog/FeatureFlagsController-iOS.git at master
========================================
Build
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Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/DataDog/FeatureFlagsController-iOS.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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[96 / 105] FeatureFlagsController
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/UI/FeatureFlagsView.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile FeatureFlagsView.swift
/Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/UI/FeatureFlagsView.swift:39:14: [1;31merror: [1;39m'navigationBarTitle' is unavailable in macOS[0;0m
[0;36m37 |[0;0m                 }
[0;36m38 |[0;0m             }
[0;36m39 |[0;0m             .[4;39mnavigationBarTitle[0;0m("Feature Flags")
   [0;36m|[0;0m              `- [1;31merror: [1;39m'navigationBarTitle' is unavailable in macOS[0;0m
[0;36m40 |[0;0m         }
[0;36m41 |[0;0m     }
SwiftUI.View.navigationBarTitle:7:27: [1;39mnote: [1;39m'navigationBarTitle' has been explicitly marked unavailable here[0;0m
[0;36m5 |[0;0m   @available(watchOS, introduced: 6.0, deprecated: 100000.0, renamed: "navigationTitle(_:)")
[0;36m6 |[0;0m   @available(visionOS, introduced: 1.0, deprecated: 100000.0, renamed: "navigationTitle(_:)")
[0;36m7 |[0;0m   nonisolated public func navigationBarTitle(_ titleKey: LocalizedStringKey) -> some View
  [0;36m|[0;0m                           `- [1;39mnote: [1;39m'navigationBarTitle' has been explicitly marked unavailable here[0;0m
[0;36m8 |[0;0m   }
[0;36m9 |[0;0m
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/Sources/FeatureFlagsController/FeatureFlag.swift /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/FeatureFlagType.swift /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/FeatureFlagsController.swift /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/Flag\ Types/CountFeatureFlag.swift /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/Flag\ Types/FeatureFlagsGroup.swift /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/Flag\ Types/PickerFeatureFlag.swift /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/Flag\ Types/ToggleFeatureFlag.swift /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/UI/FeatureFlagViewFactory.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/FeatureFlagsController/UI/FeatureFlagsView.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsView.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsView.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsView.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsView.dia -target arm64-apple-macos12.0 -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/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -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 -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -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/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsController-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/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name FeatureFlagsController -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsController_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/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsView.o -debug-module-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsController.swiftmodule -index-unit-output-path /FeatureFlagsController.build/Debug/FeatureFlagsController-t.build/Objects-normal/arm64/FeatureFlagsView.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm