[Parity] Assertion failed: (kindHasOutputInfo()

[kcieplak]

Is it reproducible with SwiftPM command-line tools: swift build, swift test, swift package etc?

• Confirmed reproduction steps with SwiftPM CLI. The description text must include reproduction steps with either of command-line SwiftPM commands, swift build, swift test, swift package etc.

Description

https://github.com/yonaskolb/XcodeGen.git

MacOS

The following package does not build using the 'swifbuild' backend but does with 'native'

swift build `--buildsystem=swiftbuild` fails to build package

info: Planning Swift module Yams (arm64)
    cd /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E
    builtin-SwiftDriver -- /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/bin/swiftc -parse-as-library -module-name Yams -Onone -enforce-exclusivity\=checked @/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/Objects-normal/arm64/Yams.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -Xcc -fmodule-map-file\=/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/checkouts/Yams/Sources/CYaml/include/module.modulemap -v -DXcode -I /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -L /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -plugin-path /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/host/plugins/testing -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -L /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -g -external-plugin-path /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/host/plugins/testing\#/Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/bin/swift-plugin-server -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk -target arm64-apple-macos10.13 -g -module-cache-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -suppress-warnings -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug -Isystem /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -Isystem /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -F /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug/PackageFrameworks -F /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j24 -enable-batch-mode -incremental -output-file-map /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/Objects-normal/arm64/Yams-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/Objects-normal/arm64/Yams.swiftmodule -validate-clang-modules-once -clang-build-session-file /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/ModuleCache.noindex/Session.modulevalidation -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/Objects-normal/arm64/Yams_const_extract_protocols.json -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/checkouts/Yams/Sources/CYaml/include -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug/include -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/DerivedSources-normal/arm64 -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/DerivedSources/arm64 -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -Xcc -DYAML_DECLARE_STATIC -emit-objc-header -emit-objc-header-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/Yams.build/Objects-normal/arm64/Yams-Swift.h -working-directory /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E -experimental-emit-module-separately -disable-cmo
info: Planning Swift module JSONUtilities (arm64)
    cd /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E
    builtin-SwiftDriver -- /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/bin/swiftc -parse-as-library -module-name JSONUtilities -Onone -enforce-exclusivity\=checked @/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/Objects-normal/arm64/JSONUtilities.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -v -DXcode -I /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -L /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -plugin-path /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/host/plugins/testing -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -L /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -g -external-plugin-path /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/host/plugins/testing\#/Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/bin/swift-plugin-server -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk -target arm64-apple-macos10.13 -g -module-cache-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -suppress-warnings -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 4.2 -I /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug -Isystem /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -Isystem /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -F /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j24 -enable-batch-mode -incremental -output-file-map /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/Objects-normal/arm64/JSONUtilities-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/Objects-normal/arm64/JSONUtilities.swiftmodule -validate-clang-modules-once -clang-build-session-file /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/ModuleCache.noindex/Session.modulevalidation -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/Objects-normal/arm64/JSONUtilities_const_extract_protocols.json -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug/include -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/DerivedSources-normal/arm64 -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/DerivedSources/arm64 -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/JSONUtilities.build/Debug/JSONUtilities.build/Objects-normal/arm64/JSONUtilities-Swift.h -working-directory /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E -experimental-emit-module-separately -disable-cmo
info: Planning Swift module AEXML (arm64)
    cd /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E
    builtin-SwiftDriver -- /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/bin/swiftc -parse-as-library -module-name AEXML -Onone -enforce-exclusivity\=checked @/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/Objects-normal/arm64/AEXML.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -v -DXcode -I /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -L /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -plugin-path /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/host/plugins/testing -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -L /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -g -external-plugin-path /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/host/plugins/testing\#/Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/bin/swift-plugin-server -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk -target arm64-apple-macos10.13 -g -module-cache-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -suppress-warnings -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug -Isystem /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -Isystem /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/lib/swift/macosx/testing -F /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j24 -enable-batch-mode -incremental -output-file-map /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/Objects-normal/arm64/AEXML-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/Objects-normal/arm64/AEXML.swiftmodule -validate-clang-modules-once -clang-build-session-file /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/ModuleCache.noindex/Session.modulevalidation -package-name aexml -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/Objects-normal/arm64/AEXML_const_extract_protocols.json -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Products/Debug/include -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/DerivedSources-normal/arm64 -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/DerivedSources/arm64 -Xcc -I/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/AEXML.build/Debug/AEXML.build/Objects-normal/arm64/AEXML-Swift.h -working-directory /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E -experimental-emit-module-separately -disable-cmo
info: Compile api.c (arm64)
    cd /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E
    
    Using response file: /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/CYaml.build/Objects-normal/arm64/7187679823f38a2a940e0043cdf9d637-common-args.resp
    
    /Users/jenkins/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-11-26-a.xctoolchain/usr/bin/clang -x c -target arm64-apple-macos10.13 -fmessage-length\=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit\=0 -fno-color-diagnostics -fmodules-prune-interval\=86400 -fmodules-prune-after\=345600 -fbuild-session-file\=/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/ModuleCache.noindex/Session.modulevalidation -fmodules-validate-once-per-build-session -Wnon-modular-include-in-framework-module -Werror\=non-modular-include-in-framework-module -Wno-trigraphs -Wno-missing-field-initializers -Wno-missing-prototypes -Wno-return-type -Wno-missing-braces -Wparentheses -Wswitch -Wno-unused-function -Wno-unused-label -Wno-unused-parameter -Wno-unused-variable -Wunused-value -Wno-empty-body -Wno-uninitialized -Wno-unknown-pragmas -w -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wno-constant-conversion -Wno-int-conversion -Wno-bool-conversion -Wno-enum-conversion -Wno-float-conversion -Wno-non-literal-null-conversion -Wno-objc-literal-conversion -Wshorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-implicit-fallthrough -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk -fstrict-aliasing -Wdeprecated-declarations -Wno-sign-conversion -Wno-infinite-recursion -Wno-comma -Wno-block-capture-autoreleasing -Wno-strict-prototypes -Wno-semicolon-before-method-body -v -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.6.sdk @/private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/CYaml.build/Objects-normal/arm64/7187679823f38a2a940e0043cdf9d637-common-args.resp -MMD -MT dependencies -MF /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/CYaml.build/Objects-normal/arm64/api.d --serialize-diagnostics /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/CYaml.build/Objects-normal/arm64/api.dia -c /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/checkouts/Yams/Sources/CYaml/src/api.c -o /private/var/lib/jenkins/workspace/swift_oss/swift-package-index-metrics/spi-workdir/6C2E1397-784C-484D-B2D4-A4A31C76A81E/XcodeGen/.build-swiftbuild/arm64-apple-macosx/Intermediates.noindex/Yams.build/Debug/CYaml.build/Objects-normal/arm64/api.o
Assertion failed: (kindHasOutputInfo() && "invalid call for value kind"), function getOutputInfo, file BuildValue.h, line 395.

Expected behaviour

Builds

Actual behavior

Fails to build

Steps to reproduce

git clone https://github.com/yonaskolb/XcodeGen.git
swift build --build-system=swiftbuild

Swift Package Manager version/commit hash

No response

Swift & OS version (output of swift --version ; uname -a)

No response