TypoChecker – Build Information – Swift Package Index

Build Information

Failed to build TypoChecker, reference master (d8fd92), with Swift 6.4 for macOS (SPM) on 17 Sep 2026 01:04:44 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/t-osawa-009/TypoChecker.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/t-osawa-009/TypoChecker
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at d8fd920 Update README.md
Cloned https://github.com/t-osawa-009/TypoChecker.git
Revision (git rev-parse @):
d8fd920373f54a6e649a23cc6093a51db4e53985
SUCCESS checkout https://github.com/t-osawa-009/TypoChecker.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/t-osawa-009/TypoChecker.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Pre-planning 1 / 97]
[Planning deferred tasks]
[29 / 52]
[33 / 56] UniYAML
[42 / 94]
[45 / 94]
[50 / 94]
[52 / 94]
[56 / 94]
[58 / 94]
[61 / 94]
[70 / 94]
[72 / 94]
[73 / 94]
[77 / 94] UniYAML
[93 / 106] TypoChecker-product
Fetching https://github.com/seznam/swift-uniyaml.git
Fetching https://github.com/JohnSundell/Files.git
[1/1273] Fetching files
[40/1486] Fetching files, swift-uniyaml
Fetched https://github.com/JohnSundell/Files.git (1.03s)
Fetched https://github.com/seznam/swift-uniyaml.git (1.03s)
Computing version for https://github.com/JohnSundell/Files.git
Computed https://github.com/JohnSundell/Files.git at 2.3.0 (3.26s)
Computing version for https://github.com/seznam/swift-uniyaml.git
Computed https://github.com/seznam/swift-uniyaml.git at 0.12.0 (2.12s)
Creating working copy for https://github.com/JohnSundell/Files.git
Working copy of https://github.com/JohnSundell/Files.git resolved at 2.3.0
Creating working copy for https://github.com/seznam/swift-uniyaml.git
Working copy of https://github.com/seznam/swift-uniyaml.git resolved at 0.12.0
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-uniyaml/Sources/UniYAML/YAML.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile YAML.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-uniyaml/Sources/UniYAML/YAML.swift:218:12: [1;31merror: [1;39mcannot assign to property: 'key' is a 'let' constant[0;0m
 [0;36m34 |[0;0m 	let indent: Int
 [0;36m35 |[0;0m 	var type: YAMLType
 [0;36m36 |[0;0m 	let key: String?
    [0;36m|[0;0m  `- [1;39mnote: [1;39mchange 'let' to 'var' to make it mutable[0;0m
 [0;36m37 |[0;0m 	let tag: String?
 [0;36m38 |[0;0m 	var value: Any?
    [0;36m:[0;0m
[0;36m216 |[0;0m 				return nil
[0;36m217 |[0;0m 			}
[0;36m218 |[0;0m 			[4;39mobj[k]!.key[0;0m = k
    [0;36m|[0;0m            `- [1;31merror: [1;39mcannot assign to property: 'key' is a 'let' constant[0;0m
[0;36m219 |[0;0m 		}
[0;36m220 |[0;0m 		indent = 0
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/swift-uniyaml/Sources/UniYAML/Decoder.swift /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-uniyaml/Sources/UniYAML/Encoder.swift -primary-file /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-uniyaml/Sources/UniYAML/YAML.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/YAML.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/YAML.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/YAML.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/YAML.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/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/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/UniYAML-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 -suppress-warnings -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/UniYAML.build/Debug/UniYAML-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name UniYAML -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/UniYAML_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/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/YAML.o -debug-module-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/UniYAML.swiftmodule -index-unit-output-path /UniYAML.build/Debug/UniYAML-t.build/Objects-normal/arm64/YAML.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm