SwiftQC – Build Information – Swift Package Index

Build Information

Failed to build SwiftQC, reference main (f9f3fb), with Swift 6.4 for Wasm on 22 Sep 2026 16:51:13 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Aristide021/SwiftQC.git
Reference: main
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/Aristide021/SwiftQC
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at f9f3fb1 Update LICENSE
Cloned https://github.com/Aristide021/SwiftQC.git
Revision (git rev-parse @):
f9f3fb1f33b54742e9863745db9ccd8dd47e1076
SUCCESS checkout https://github.com/Aristide021/SwiftQC.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/Aristide021/SwiftQC.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Fetching https://github.com/apple/swift-docc-plugin
Fetching https://github.com/apple/swift-testing.git
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Fetching https://github.com/apple/swift-argument-parser.git
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Fetched https://github.com/apple/swift-atomics.git (0.63s)
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Computing version for https://github.com/pointfreeco/swift-gen.git
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Computed https://github.com/apple/swift-atomics.git at 1.3.1 (0.18s)
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Computing version for https://github.com/swiftlang/swift-syntax.git
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Fetched https://github.com/swiftlang/swift-docc-symbolkit (0.62s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.86s)
Computing version for https://github.com/apple/swift-argument-parser.git
Computed https://github.com/apple/swift-argument-parser.git at 1.8.2 (0.19s)
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.5.0
Creating working copy for https://github.com/apple/swift-testing.git
Working copy of https://github.com/apple/swift-testing.git resolved at 0.99.0
Creating working copy for https://github.com/apple/swift-argument-parser.git
Working copy of https://github.com/apple/swift-argument-parser.git resolved at 1.8.2
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 600.0.1
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.1
Creating working copy for https://github.com/pointfreeco/swift-gen.git
Working copy of https://github.com/pointfreeco/swift-gen.git resolved at 0.5.0
Building for debugging...
[Computing dependencies]
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error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Range+Arbitrary.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile Range+Arbitrary.swift
/host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Range+Arbitrary.swift:105:31: [1;31merror: [1;39mreference to captured var 'val1' in concurrently-executing code[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m103 |[0;0m             }
[0;36m104 |[0;0m
[0;36m105 |[0;0m             return Gen.always(val1..<val2 as Range<Bound.Value>?) // Explicitly optional
    [0;36m|[0;0m                               `- [1;31merror: [1;39mreference to captured var 'val1' in concurrently-executing code[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m106 |[0;0m         }.compactMap { $0 } // compactMap will unwrap Some and filter out None/nil
[0;36m107 |[0;0m     }
/host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Range+Arbitrary.swift:105:38: [1;31merror: [1;39mreference to captured var 'val2' in concurrently-executing code[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m103 |[0;0m             }
[0;36m104 |[0;0m
[0;36m105 |[0;0m             return Gen.always(val1..<val2 as Range<Bound.Value>?) // Explicitly optional
    [0;36m|[0;0m                                      `- [1;31merror: [1;39mreference to captured var 'val2' in concurrently-executing code[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures\SendableClosureCaptures]8;;\]
[0;36m106 |[0;0m         }.compactMap { $0 } // compactMap will unwrap Some and filter out None/nil
[0;36m107 |[0;0m     }
[#SendableClosureCaptures]: <https://docs.swift.org/compiler/documentation/diagnostics/sendable-closure-captures>
Failed frontend command:
/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Array+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Bool+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/CGFloat+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Character+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/ContiguousArray+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Data+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Date+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/DateComponents+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Decimal+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Dictionary+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/FixedWidthInteger+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/FloatingPoint+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Int+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Optional+Arbitrary.swift -primary-file /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Range+Arbitrary.swift -primary-file /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Result+Arbitrary.swift -primary-file /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Set+Arbitrary.swift -primary-file /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/String+Arbitrary.swift -primary-file /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/URL+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/UUID+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/UnicodeScalar+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Arbitrary/Conformances/Void+Arbitrary.swift /host/spi-builder-workspace/Sources/SwiftQC/Core/Property.swift /host/spi-builder-workspace/Sources/SwiftQC/Generators/Gen.swift /host/spi-builder-workspace/Sources/SwiftQC/Parallel/ParallelCommands.swift /host/spi-builder-workspace/Sources/SwiftQC/Parallel/ParallelModel.swift /host/spi-builder-workspace/Sources/SwiftQC/Parallel/ParallelRunner.swift /host/spi-builder-workspace/Sources/SwiftQC/Reporting/Reporter.swift /host/spi-builder-workspace/Sources/SwiftQC/Runner/PropertyRunner.swift /host/spi-builder-workspace/Sources/SwiftQC/Runner/TestResult.swift /host/spi-builder-workspace/Sources/SwiftQC/Shrinkers/BuiltinShrinkers.swift /host/spi-builder-workspace/Sources/SwiftQC/Shrinkers/LensShrink.swift /host/spi-builder-workspace/Sources/SwiftQC/Shrinkers/Shrinker.swift /host/spi-builder-workspace/Sources/SwiftQC/Shrinkers/TupleShrinkers.swift /host/spi-builder-workspace/Sources/SwiftQC/Stateful/Commands.swift /host/spi-builder-workspace/Sources/SwiftQC/Stateful/StateModel.swift /host/spi-builder-workspace/Sources/SwiftQC/Stateful/StatefulRunner.swift /host/spi-builder-workspace/Sources/SwiftQC/Utils/CoverageGuided.swift /host/spi-builder-workspace/Sources/SwiftQC/Utils/NoShrink.swift -supplementary-output-file-map /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/supplementaryOutputs-49 -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -module-cache-path /host/spi-builder-workspace/.build/out/ModuleCache.noindex -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -load-plugin-executable /host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64/TestingMacros\#TestingMacros -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -validate-clang-modules-once -clang-build-session-file /host/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /host -resource-dir /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -Xcc -fmodule-map-file\=/host/spi-builder-workspace/.build/checkouts/swift-testing/Sources/_TestingInternals/include/module.modulemap -Xcc -fmodule-map-file\=/host/spi-builder-workspace/.build/checkouts/swift-atomics/Sources/_AtomicsShims/include/module.modulemap -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/host/spi-builder-workspace/.build/checkouts/swift-testing/Sources/_TestingInternals/include -Xcc -I/host/spi-builder-workspace/.build/checkouts/swift-atomics/Sources/_AtomicsShims/include -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SwiftQC -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/SwiftQC_const_extract_protocols.json -in-process-plugin-server-path /usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/Range+Arbitrary.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/Result+Arbitrary.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/Set+Arbitrary.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/String+Arbitrary.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/URL+Arbitrary.o -index-unit-output-path /SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/Range+Arbitrary.o -index-unit-output-path /SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/Result+Arbitrary.o -index-unit-output-path /SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/Set+Arbitrary.o -index-unit-output-path /SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/String+Arbitrary.o -index-unit-output-path /SwiftQC.build/Debug-webassembly-wasm32/SwiftQC-t.build/Objects-normal/wasm32/URL+Arbitrary.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm