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Build Information

Failed to build Hylo, reference main (0f1e3d), with Swift 6.3 for watchOS using Xcode 26.4 on 28 Apr 2026 21:30:13 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/hylo-lang/hylo.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/hylo-lang/hylo
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 0f1e3db Bump crate-ci/typos from 1.45.1 to 1.45.2
Submodule path 'SPMBuildToolSupport': checked out 'c270d23a9c70aa015e09a9c0ea28e36d2801adc4'
Submodule 'SPMBuildToolSupport' (https://github.com/dabrahams/SPMBuildToolSupport.git) registered for path 'SPMBuildToolSupport'
Cloning into '/Users/admin/builder/spi-builder-workspace/SPMBuildToolSupport'...
Cloned https://github.com/hylo-lang/hylo.git
Revision (git rev-parse @):
0f1e3dbaa611cf3e9646b46bf2740a71057dd072
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/hylo-lang/hylo.git at main
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.3
Building package at path:  $PWD
https://github.com/hylo-lang/hylo.git
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/hylo-lang/Durian.git
Fetching from https://github.com/hylo-lang/Swifty-LLVM
Invalid manifest (compiled with: ["/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.aEYWFD/vfs.yaml", "-L", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-package-description-version", "6.2.0", "-Xfrontend", "-serialize-diagnostics-path", "-Xfrontend", "/Users/admin/Library/Caches/org.swift.swiftpm/manifests/ManifestLoading/swifty-llvm.dia", "/Package.swift", "-o", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.dE9put/swifty-llvm-manifest"])
main/Package.swift:152: Fatal error: Unexpectedly found nil while unwrapping an Optional value in https://github.com/hylo-lang/Swifty-LLVMResolve Package Graph
Updating from https://github.com/hylo-lang/Durian.git
Updating from https://github.com/hylo-lang/Swifty-LLVM
Invalid manifest (compiled with: ["/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.yLlzzQ/vfs.yaml", "-L", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-package-description-version", "6.2.0", "-Xfrontend", "-serialize-diagnostics-path", "-Xfrontend", "/Users/admin/Library/Caches/org.swift.swiftpm/manifests/ManifestLoading/swifty-llvm.dia", "/Package.swift", "-o", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.EncY90/swifty-llvm-manifest"])
main/Package.swift:152: Fatal error: Unexpectedly found nil while unwrapping an Optional value in https://github.com/hylo-lang/Swifty-LLVMResolve Package Graph
Updating from https://github.com/hylo-lang/Durian.git
Updating from https://github.com/hylo-lang/Swifty-LLVM
Invalid manifest (compiled with: ["/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.Wna9Mq/vfs.yaml", "-L", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-package-description-version", "6.2.0", "-Xfrontend", "-serialize-diagnostics-path", "-Xfrontend", "/Users/admin/Library/Caches/org.swift.swiftpm/manifests/ManifestLoading/swifty-llvm.dia", "/Package.swift", "-o", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.drzbvE/swifty-llvm-manifest"])
main/Package.swift:152: Fatal error: Unexpectedly found nil while unwrapping an Optional value in https://github.com/hylo-lang/Swifty-LLVM
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-28 17:30:09.656 xcodebuild[544:3156] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-28-04_17-30-0009.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Invalid manifest (compiled with: ["/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.Wna9Mq/vfs.yaml", "-L", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-package-description-version", "6.2.0", "-Xfrontend", "-serialize-diagnostics-path", "-Xfrontend", "/Users/admin/Library/Caches/org.swift.swiftpm/manifests/ManifestLoading/swifty-llvm.dia", "/Package.swift", "-o", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.drzbvE/swifty-llvm-manifest"])
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Updating from https://github.com/hylo-lang/Durian.git
Updating from https://github.com/hylo-lang/Swifty-LLVM
Invalid manifest (compiled with: ["/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.7SiZlO/vfs.yaml", "-L", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-package-description-version", "6.2.0", "-Xfrontend", "-serialize-diagnostics-path", "-Xfrontend", "/Users/admin/Library/Caches/org.swift.swiftpm/manifests/ManifestLoading/swifty-llvm.dia", "/Package.swift", "-o", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.837NrX/swifty-llvm-manifest"])
main/Package.swift:152: Fatal error: Unexpectedly found nil while unwrapping an Optional value in https://github.com/hylo-lang/Swifty-LLVM
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-28 17:30:13.193 xcodebuild[701:4163] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-28-04_17-30-0013.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Invalid manifest (compiled with: ["/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.7SiZlO/vfs.yaml", "-L", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-26.4.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk", "-package-description-version", "6.2.0", "-Xfrontend", "-serialize-diagnostics-path", "-Xfrontend", "/Users/admin/Library/Caches/org.swift.swiftpm/manifests/ManifestLoading/swifty-llvm.dia", "/Package.swift", "-o", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.837NrX/swifty-llvm-manifest"])
BUILD FAILURE 6.3 watchOS