Probing – Build Information – Swift Package Index

Build Information

Failed to build Probing, reference 2.0.0 (4bc510), with Swift 6.4 for Wasm on 23 Sep 2026 10:15:55 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/NSFatalError/Probing.git
Reference: 2.0.0
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/NSFatalError/Probing
 * tag               2.0.0      -> FETCH_HEAD
HEAD is now at 4bc5104 Prepared package for Swift 6.2 (#8)
Submodule path 'Macros/Dependencies/PrincipleMacros': checked out '85aab93496550f03b8888a96598fe06ad7685a53'
Submodule 'Macros/Dependencies/PrincipleMacros' (https://github.com/NSFatalError/PrincipleMacros) registered for path 'Macros/Dependencies/PrincipleMacros'
Cloning into '/host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros'...
Cloned https://github.com/NSFatalError/Probing.git
Revision (git rev-parse @):
4bc51040f17da842d73c24141d65fc000343fd73
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/NSFatalError/Probing.git at 2.0.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/NSFatalError/Probing.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$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/NSFatalError/Principle
Fetching https://github.com/swiftlang/swift-syntax
[1/529] Fetching principle
[530/80543] Fetching principle, swift-syntax
Fetched https://github.com/NSFatalError/Principle (3.08s)
Fetched https://github.com/swiftlang/swift-syntax (3.10s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 602.0.0 (4.30s)
Computing version for https://github.com/NSFatalError/Principle
Computed https://github.com/NSFatalError/Principle at 2.0.0 (0.20s)
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 602.0.0
Creating working copy for https://github.com/NSFatalError/Principle
Working copy of https://github.com/NSFatalError/Principle resolved at 2.0.0
warning: 'spi-builder-workspace': found 16 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/LICENSE
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Package.resolved
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Package.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/README.md
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Builders/EnumCaseCallExprBuilderTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Builders/SwitchExprBuilderTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parameters/ParameterExtractorTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parsers/EnumCasesParserTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parsers/PropertiesListTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Parsers/PropertiesParserTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/CamelCaseNotationTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/ClosureExprSyntaxTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/ClosureTypeSyntaxTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/ExprSyntaxTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/GlobalActorIsolationTests.swift
    /host/spi-builder-workspace/Macros/Dependencies/PrincipleMacros/Tests/PrincipleMacrosTests/Syntax/TypeSyntaxTests.swift
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 767]
[Planning deferred tasks]
[161 / 335] PrincipleConcurrency
[180 / 335] SwiftSyntax601
[197 / 335] PrincipleConcurrency-product
[198 / 335] SwiftSyntax601
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/SingleUseTransfer.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile SingleUseTransfer.swift
/host/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/SingleUseTransfer.swift:86:20: [1;31merror: [1;39mreturning 'wrapped' as a 'sending' result risks causing data races[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/region-isolation\RegionIsolation]8;;\]
[0;36m84 |[0;0m         case let .some(wrapped):
[0;36m85 |[0;0m             self = .init()
[0;36m86 |[0;0m             return wrapped
   [0;36m|[0;0m                    |- [1;31merror: [1;39mreturning 'wrapped' as a 'sending' result risks causing data races[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/region-isolation\RegionIsolation]8;;\]
   [0;36m|[0;0m                    `- [1;39mnote: [1;39mreturning 'wrapped' risks causing data races since the caller assumes that 'wrapped' can be safely sent to other isolation domains[0;0m
[0;36m87 |[0;0m         }
[0;36m88 |[0;0m     }
[#RegionIsolation]: <https://docs.swift.org/compiler/documentation/diagnostics/region-isolation>
Failed frontend command:
/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/DeadlineExceededError.swift -primary-file /host/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/SingleUseTransfer.swift /host/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/TaskTimeLimit.swift /host/spi-builder-workspace/.build/checkouts/Principle/Sources/PrincipleConcurrency/TimeoutError.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/Objects-normal/wasm32/SingleUseTransfer.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/Objects-normal/wasm32/SingleUseTransfer.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/Objects-normal/wasm32/SingleUseTransfer.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/Objects-normal/wasm32/SingleUseTransfer.dia -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 -suppress-warnings -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-upcoming-feature ExistentialAny -enable-upcoming-feature MemberImportVisibility -enable-upcoming-feature NonisolatedNonsendingByDefault -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -user-module-version 2.0.0 -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 -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/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name PrincipleConcurrency -package-name principle -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/Objects-normal/wasm32/PrincipleConcurrency_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/Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/Objects-normal/wasm32/SingleUseTransfer.o -index-unit-output-path /Principle.build/Debug-webassembly-wasm32/PrincipleConcurrency-t.build/Objects-normal/wasm32/SingleUseTransfer.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm