Swift Package Index

Build Information

Failed to build Hylo, reference main (688915), with Swift 6.4 for iOS using Xcode 27.0 on 23 Oct 2026 05:58:11 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: 5.1.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/hylo-lang/hylo-old.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/hylo-lang/hylo-old
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 6889158 Typo
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-old.git
Revision (git rev-parse @):
6889158246df571baa9079115817ab2bff61156b
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/hylo-lang/hylo-old.git at main
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.4
Building package at path:  $PWD
https://github.com/hylo-lang/hylo-old.git
Command line invocation:
    /Applications/Xcode-27.0.0.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-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.ml5q3X/vfs.yaml", "-L", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.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.tpMLEH/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-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.DtVNnp/vfs.yaml", "-L", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.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.0uryok/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-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.4s9qed/vfs.yaml", "-L", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.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.CPEiKm/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)
2026-10-23 01:58:07.919 xcodebuild[536:3028] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-23-10_01-58-0007.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Invalid manifest (compiled with: ["/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.4s9qed/vfs.yaml", "-L", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.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.CPEiKm/swifty-llvm-manifest"])
Command line invocation:
    /Applications/Xcode-27.0.0.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-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.SUmfNe/vfs.yaml", "-L", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.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.AO0bUa/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)
2026-10-23 01:58:11.008 xcodebuild[717:4137] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-23-10_01-58-0011.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Invalid manifest (compiled with: ["/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/TemporaryDirectory.SUmfNe/vfs.yaml", "-L", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-target", "arm64-apple-macos14.0", "-plugin-path", "/Applications/Xcode-27.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk", "-swift-version", "6", "-I", "/Applications/Xcode-27.0.0.app/Contents/SharedFrameworks/SwiftPM.framework/SharedSupport/ManifestAPI", "-sdk", "/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.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.AO0bUa/swifty-llvm-manifest"])
BUILD FAILURE 6.4 iOS