Vexil – Build Information – Swift Package Index

Build Information

Failed to build Vexil, reference main (3cfc3a), with Swift 6.4 for Wasm on 20 Sep 2026 23:28:29 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/unsignedapps/Vexil.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/unsignedapps/Vexil
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 3cfc3a8 Merge pull request #154 from unsignedapps/fix/asynccurrentvalue-deadlock
Cloned https://github.com/unsignedapps/Vexil.git
Revision (git rev-parse @):
3cfc3a8ed46912e61e9aca19cb177c19ca05a8c1
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/unsignedapps/Vexil.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/unsignedapps/Vexil.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$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-async-algorithms.git
Fetching https://github.com/swiftlang/swift-syntax.git
Fetching https://github.com/nicklockwood/SwiftFormat.git
[1/6723] Fetching swift-async-algorithms
[6724/65553] Fetching swift-async-algorithms, swiftformat
[11431/145538] Fetching swift-async-algorithms, swiftformat, swift-syntax
Fetched https://github.com/apple/swift-async-algorithms.git (3.03s)
[94693/138815] Fetching swiftformat, swift-syntax
Fetched https://github.com/swiftlang/swift-syntax.git (15.29s)
Fetched https://github.com/nicklockwood/SwiftFormat.git (15.53s)
Computing version for https://github.com/nicklockwood/SwiftFormat.git
Computed https://github.com/nicklockwood/SwiftFormat.git at 0.63.0 (16.60s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 603.0.2 (0.31s)
Computing version for https://github.com/apple/swift-async-algorithms.git
Computed https://github.com/apple/swift-async-algorithms.git at 1.1.5 (0.21s)
Fetching https://github.com/apple/swift-collections.git
[1/27352] Fetching swift-collections
Fetched https://github.com/apple/swift-collections.git (1.19s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.6.0 (1.49s)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.6.0
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 603.0.2
Creating working copy for https://github.com/nicklockwood/SwiftFormat.git
Working copy of https://github.com/nicklockwood/SwiftFormat.git resolved at 0.63.0
Creating working copy for https://github.com/apple/swift-async-algorithms.git
Working copy of https://github.com/apple/swift-async-algorithms.git resolved at 1.1.5
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 799]
[Planning deferred tasks]
[168 / 349] SwiftSyntax602
[209 / 362] InternalCollectionsUtilities
[209 / 362] SwiftSyntax601
[224 / 365] InternalCollectionsUtilities
[232 / 366] SwiftSyntax601
[238 / 370] SwiftSyntax
[246 / 398] SwiftSyntax
[249 / 398] SwiftSyntax510
[255 / 398] SwiftSyntax
[256 / 399] SwiftSyntax
[257 / 399] SwiftSyntax
[258 / 399] OrderedCollections
[260 / 399] OrderedCollections
[265 / 399] OrderedCollections
[266 / 399] OrderedCollections
[267 / 399] OrderedCollections-product
[268 / 399] OrderedCollections-product
[270 / 399] OrderedCollections
[271 / 399] InternalCollectionsUtilities
[273 / 399] InternalCollectionsUtilities
[276 / 399] OrderedCollections
[278 / 399] ContainersPreview
[281 / 399] ContainersPreview
[285 / 401] DequeModule
[289 / 411] DequeModule
[290 / 411] DequeModule
[292 / 411] DequeModule
[293 / 411] DequeModule
[294 / 411] DequeModule
[295 / 411] ContainersPreview
[297 / 411] DequeModule
[306 / 421] AsyncAlgorithms
[307 / 422] DequeModule
[315 / 422] AsyncAlgorithms
[321 / 422] AsyncAlgorithms-product
[322 / 422] AsyncAlgorithms-product
[323 / 422] AsyncAlgorithms-product
[325 / 422] AsyncAlgorithms
[327 / 424] SwiftDiagnostics
[329 / 442] SwiftDiagnostics
[331 / 442] SwiftParser
[332 / 442] SwiftDiagnostics
[333 / 443] SwiftParser
[343 / 443] SwiftParser
[346 / 443] SwiftParser
[347 / 443] SwiftParser
[348 / 443] SwiftDiagnostics
[349 / 443] SwiftDiagnostics
[351 / 443] SwiftDiagnostics
[354 / 443] SwiftDiagnostics
[358 / 444] SwiftBasicFormat
[362 / 451] SwiftBasicFormat
[367 / 453] SwiftDiagnostics
[377 / 455] AsyncAlgorithms
[380 / 464] SwiftOperators
[383 / 473] SwiftParserDiagnostics
[385 / 473] SwiftOperators
[388 / 473] SwiftParserDiagnostics
[390 / 474] SwiftParserDiagnostics
[400 / 474] SwiftParserDiagnostics
[401 / 474] SwiftOperators
[403 / 474] SwiftOperators
[404 / 474] SwiftOperators
[406 / 474]
[412 / 484] SwiftSyntaxBuilder
[412 / 484] SwiftOperators
[413 / 485] SwiftSyntaxBuilder
[415 / 485] SwiftSyntaxBuilder
[416 / 485] SwiftSyntaxBuilder
[419 / 486] SwiftSyntaxBuilder
[427 / 487] SwiftIfConfig
[432 / 496] SwiftIfConfig
[433 / 496] SwiftSyntaxBuilder
[435 / 497] SwiftSyntaxBuilder
[444 / 498] SwiftIfConfig
[449 / 507] SwiftIfConfig
[457 / 507] SwiftSyntaxMacros
[463 / 517] SwiftSyntaxMacroExpansion
[464 / 518] SwiftSyntaxMacros
[464 / 518] SwiftIfConfig
[467 / 519] SwiftSyntaxMacroExpansion
[477 / 519] SwiftIfConfig
[480 / 529] SwiftCompilerPluginMessageHandling
[482 / 529] SwiftCompilerPluginMessageHandling
[484 / 529] SwiftCompilerPluginMessageHandling
[488 / 529] SwiftCompilerPluginMessageHandling
[495 / 532] SwiftCompilerPlugin
[496 / 532] SwiftCompilerPlugin
[500 / 532] SwiftCompilerPluginMessageHandling
[504 / 534] SwiftCompilerPluginMessageHandling
[506 / 535] SwiftSyntax
[509 / 536] SwiftSyntax
[516 / 536] SwiftIfConfig
[525 / 537] VexilMacros
[534 / 546] VexilMacros
[535 / 546] VexilMacros
[539 / 547] VexilMacros
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

[549 / 557] Vexil
/host/spi-builder-workspace/Sources/Vexil/Lookup.swift:15:8: [1;31merror: [1;39mno such module 'Combine'[0;0m
[0;36m13 |[0;0m
[0;36m14 |[0;0m #if !os(Linux)
[0;36m15 |[0;0m import Combine
   [0;36m|[0;0m        `- [1;31merror: [1;39mno such module 'Combine'[0;0m
[0;36m16 |[0;0m #endif
[0;36m17 |[0;0m
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/Vexil/Configuration.swift /host/spi-builder-workspace/Sources/Vexil/Container.swift /host/spi-builder-workspace/Sources/Vexil/DisplayOptions.swift /host/spi-builder-workspace/Sources/Vexil/Flag.swift /host/spi-builder-workspace/Sources/Vexil/Group.swift /host/spi-builder-workspace/Sources/Vexil/KeyPath.swift /host/spi-builder-workspace/Sources/Vexil/Lookup.swift /host/spi-builder-workspace/Sources/Vexil/Observability/FlagGroupWigwag.swift /host/spi-builder-workspace/Sources/Vexil/Observability/FlagWigwag.swift /host/spi-builder-workspace/Sources/Vexil/Observability/Observing.swift /host/spi-builder-workspace/Sources/Vexil/Pole+Observability.swift /host/spi-builder-workspace/Sources/Vexil/Pole.swift /host/spi-builder-workspace/Sources/Vexil/Snapshots/MutableFlagContainer.swift /host/spi-builder-workspace/Sources/Vexil/Snapshots/Snapshot+Extensions.swift /host/spi-builder-workspace/Sources/Vexil/Snapshots/Snapshot+FlagValueSource.swift /host/spi-builder-workspace/Sources/Vexil/Snapshots/Snapshot+Lookup.swift /host/spi-builder-workspace/Sources/Vexil/Snapshots/Snapshot.swift /host/spi-builder-workspace/Sources/Vexil/Snapshots/SnapshotBuilder.swift /host/spi-builder-workspace/Sources/Vexil/Sources/BoxedFlagValue+NSObject.swift /host/spi-builder-workspace/Sources/Vexil/Sources/FlagValueDictionary+FlagValueSource.swift /host/spi-builder-workspace/Sources/Vexil/Sources/FlagValueDictionary.swift /host/spi-builder-workspace/Sources/Vexil/Sources/FlagValueSource.swift /host/spi-builder-workspace/Sources/Vexil/Sources/FlagValueSourceCoordinator.swift /host/spi-builder-workspace/Sources/Vexil/Sources/NSUbiquitousKeyValueStore+FlagValueSource.swift /host/spi-builder-workspace/Sources/Vexil/Sources/NonSendableFlagValueSource.swift /host/spi-builder-workspace/Sources/Vexil/Sources/UserDefaults+FlagValueSource.swift /host/spi-builder-workspace/Sources/Vexil/StreamManager.swift /host/spi-builder-workspace/Sources/Vexil/Utilities/AsyncCurrentValue.swift /host/spi-builder-workspace/Sources/Vexil/Utilities/BoxedFlagValue+Codable.swift /host/spi-builder-workspace/Sources/Vexil/Utilities/CollectionDifference.Change+Element.swift /host/spi-builder-workspace/Sources/Vexil/Utilities/FlagChangeStream.swift /host/spi-builder-workspace/Sources/Vexil/Utilities/Lock.swift /host/spi-builder-workspace/Sources/Vexil/Value.swift /host/spi-builder-workspace/Sources/Vexil/Visitor.swift /host/spi-builder-workspace/Sources/Vexil/Visitors/FlagDescriber.swift /host/spi-builder-workspace/Sources/Vexil/Visitors/FlagRemover.swift /host/spi-builder-workspace/Sources/Vexil/Visitors/FlagSetter.swift -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/VexilMacros\#VexilMacros -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/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Vexil -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/Objects-normal/wasm32/Vexil_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 -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/Objects-normal/wasm32/Modules/Vexil.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/Objects-normal/wasm32/Modules/Vexil.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/Objects-normal/wasm32/Vexil-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/Objects-normal/wasm32/Vexil-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/Objects-normal/wasm32/Vexil-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Vexil.build/Debug-webassembly-wasm32/Vexil-t.build/Objects-normal/wasm32/Modules/Vexil.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm