Swift Package Index

Build Information

Failed to build FutureResult, reference 1.0.0 (04e845), with Swift 6.4 for Wasm on 20 Sep 2026 11:51:50 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886769-0":/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/tapsandswipes/FutureResult.git
Reference: 1.0.0
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/tapsandswipes/FutureResult
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at 04e8452 Update dependency
Cloned https://github.com/tapsandswipes/FutureResult.git
Revision (git rev-parse @):
04e8452df265ee7b0c89707d1b2e12a91d212b1a
SUCCESS checkout https://github.com/tapsandswipes/FutureResult.git at 1.0.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/tapsandswipes/FutureResult.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-0":/host -w "$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/tapsandswipes/Chainable.git
[1/51] Fetching chainable
Fetched https://github.com/tapsandswipes/Chainable.git (0.45s)
Computing version for https://github.com/tapsandswipes/Chainable.git
Computed https://github.com/tapsandswipes/Chainable.git at 1.0.0 (0.65s)
Creating working copy for https://github.com/tapsandswipes/Chainable.git
Working copy of https://github.com/tapsandswipes/Chainable.git resolved at 1.0.0
Building for debugging...
[Pre-planning 1 / 212]
[40 / 71] Chainable
[45 / 71] FunctionComposition
[58 / 79] ResultExtras
/host/spi-builder-workspace/Sources/ResultExtras/Result+Chainable.swift:4:1: warning: extension declares a conformance of imported type 'Result' to imported protocol 'Chainable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
 2 | import Chainable
 3 |
 4 | extension Result: Chainable {}
   | |- warning: extension declares a conformance of imported type 'Result' to imported protocol 'Chainable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
 5 |
 6 | public
[59 / 79] ResultExtras
/host/spi-builder-workspace/Sources/ResultExtras/Result+Chainable.swift:4:1: warning: extension declares a conformance of imported type 'Result' to imported protocol 'Chainable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
 2 | import Chainable
 3 |
 4 | extension Result: Chainable {}
   | |- warning: extension declares a conformance of imported type 'Result' to imported protocol 'Chainable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
 5 |
 6 | public
[74 / 90] FutureResult
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Composition.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile FutureResult+Composition.swift
/host/spi-builder-workspace/Sources/FutureResult/FutureResult+Composition.swift:14:29: error: cannot find 'DispatchGroup' in scope
 12 |             FutureResult<[Result<U, UE>], E> { cb in
 13 |                 let results: Atomic<[Result<U, UE>]> = Atomic([])
 14 |                 let group = DispatchGroup()
    |                             `- error: cannot find 'DispatchGroup' in scope
 15 |                 r.forEach {
 16 |                     group.enter()
/host/spi-builder-workspace/Sources/FutureResult/FutureResult+Composition.swift:48:21: error: cannot find 'DispatchGroup' in scope
 46 |         var f2r: Result<B, E>!
 47 |
 48 |         let group = DispatchGroup()
    |                     `- error: cannot find 'DispatchGroup' in scope
 49 |
 50 |         group.enter(); f1.run { f1r = $0; group.leave() }
/host/spi-builder-workspace/Sources/FutureResult/FutureResult+Composition.swift:70:21: error: cannot find 'DispatchGroup' in scope
 68 |         var f3r: Result<C, E>!
 69 |
 70 |         let group = DispatchGroup()
    |                     `- error: cannot find 'DispatchGroup' in scope
 71 |
 72 |         group.enter(); f1.run { f1r = $0; group.leave() }
/host/spi-builder-workspace/Sources/FutureResult/FutureResult+Composition.swift:95:21: error: cannot find 'DispatchGroup' in scope
 93 |         var f4r: Result<D, E>!
 94 |
 95 |         let group = DispatchGroup()
    |                     `- error: cannot find 'DispatchGroup' in scope
 96 |
 97 |         group.enter(); f1.run { f1r = $0; group.leave() }
Failed frontend command:
/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/FutureResult/Atomic.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Async.swift -primary-file /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Chainable.swift -primary-file /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Composition.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Debug.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Functor.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Initializers.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Monoid.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Scheduling.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Transforms.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult+Utils.swift /host/spi-builder-workspace/Sources/FutureResult/FutureResult.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Chainable.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Chainable.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Chainable.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Chainable.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Composition.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Composition.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Composition.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Composition.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 -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 -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 -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/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name FutureResult -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult_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/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Chainable.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Composition.o -index-unit-output-path /FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Chainable.o -index-unit-output-path /FutureResult.build/Debug-webassembly-wasm32/FutureResult-t.build/Objects-normal/wasm32/FutureResult+Composition.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm