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Build Information

Failed to build swift-uwp, reference v0.1.0 (a0a864), with Swift 6.4 for macOS (SPM) on 24 Sep 2026 08:03:17 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/moreSwift/swift-uwp.git
Reference: v0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/moreSwift/swift-uwp
 * tag               v0.1.0     -> FETCH_HEAD
HEAD is now at a0a8646 Update to versioned dependencies
Cloned https://github.com/moreSwift/swift-uwp.git
Revision (git rev-parse @):
a0a86467514eaa63272eae848c70d49e6874ede4
SUCCESS checkout https://github.com/moreSwift/swift-uwp.git at v0.1.0
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Build
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Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/moreSwift/swift-uwp.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Constructing description]
[Planning deferred tasks]
[40 / 82]
[43 / 83] CWinRT
[48 / 87] SwiftDummy
[57 / 88] SwiftDummy
Fetching https://github.com/moreSwift/swift-cwinrt
Fetching https://github.com/moreSwift/swift-windowsfoundation
[1/114] Fetching swift-windowsfoundation
[115/614] Fetching swift-windowsfoundation, swift-cwinrt
Fetched https://github.com/moreSwift/swift-cwinrt (1.73s)
Fetched https://github.com/moreSwift/swift-windowsfoundation (1.73s)
Computing version for https://github.com/moreSwift/swift-windowsfoundation
Computed https://github.com/moreSwift/swift-windowsfoundation at 0.1.0 (2.33s)
Computing version for https://github.com/moreSwift/swift-cwinrt
Computed https://github.com/moreSwift/swift-cwinrt at 0.1.2 (2.84s)
Creating working copy for https://github.com/moreSwift/swift-windowsfoundation
Working copy of https://github.com/moreSwift/swift-windowsfoundation resolved at 0.1.0
Creating working copy for https://github.com/moreSwift/swift-cwinrt
Working copy of https://github.com/moreSwift/swift-cwinrt resolved at 0.1.2
error: clang dependency scanning failure: While building module 'CWinRT' imported from module-include.input:1:
In file included from <module-includes>:1:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-cwinrt/Sources/CWinRT/include/CWinRT.h:4:10: fatal error: 'wtypesbase.h' file not found
module-include.input:1:2: fatal error: could not build module 'CWinRT'
error: /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-windowsfoundation/Sources/WindowsFoundation/Generated/Support/AGGREGATION.swift:1:8 unable to resolve module dependency: 'CWinRT'
error: /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-windowsfoundation/Sources/WindowsFoundation/Generated/Support/ARRAY+TOVECTOR.swift:2:8 unable to resolve module dependency: 'WinSDK'
error: /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-windowsfoundation/Sources/WindowsFoundation/Generated/Support/HSTRING.swift:6:8 unable to resolve module dependency: 'ucrt'
error: clang dependency scanning failure: While building module 'CWinRT' imported from module-include.input:1:
In file included from <module-includes>:1:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-cwinrt/Sources/CWinRT/include/CWinRT.h:4:10: fatal error: 'wtypesbase.h' file not found
module-include.input:1:2: fatal error: could not build module 'CWinRT'
error: SwiftDriver WindowsFoundation normal arm64 com.apple.xcode.tools.swift.compiler failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftDriver -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name WindowsFoundation -Onone @/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/Objects-normal/arm64/WindowsFoundation.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -Xcc -fmodule-map-file\=/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/GeneratedModuleMaps/CWinRT.modulemap -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -target arm64-apple-macos12.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -suppress-warnings -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -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/PackageFrameworks -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 -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/Objects-normal/arm64/WindowsFoundation-OutputFileMap.json -save-temps -color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/SDKExplicitPrecompiledModules -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/Objects-normal/arm64/WindowsFoundation.swiftmodule -serialize-diagnostics -dependency-scan-serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/Objects-normal/arm64/WindowsFoundation-dependency-scan.dia -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -package-name swift_windowsfoundation -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/Objects-normal/arm64/WindowsFoundation_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-cwinrt/Sources/CWinRT/include -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/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/swift-windowsfoundation.build/Debug/WindowsFoundation-t.build/Objects-normal/arm64/WindowsFoundation-Swift.h -working-directory /Users/admin/builder -experimental-emit-module-separately -disable-cmo
error: Build failed
BUILD FAILURE 6.4 macosSpm