Command – Build Information – Swift Package Index

Build Information

Failed to build Command, reference 0.14.0 (a3da8b), with Swift 6.4 for Wasm on 23 Sep 2026 04:08:38 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344847-2":/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/swift-cloud/Command.git
Reference: 0.14.0
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/swift-cloud/Command
 * tag               0.14.0     -> FETCH_HEAD
HEAD is now at a3da8b9 chore: remove mockable
Cloned https://github.com/swift-cloud/Command.git
Revision (git rev-parse @):
a3da8b91e60b84ba2c54ce0d4ce9a7e844509697
SUCCESS checkout https://github.com/swift-cloud/Command.git at 0.14.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/swift-cloud/Command.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344847-2":/host -w "$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-log
Fetching https://github.com/tuist/Path
[1/8148] Fetching swift-log
[1713/8560] Fetching swift-log, path
Fetched https://github.com/apple/swift-log (0.69s)
Fetched https://github.com/tuist/Path (0.70s)
Computing version for https://github.com/tuist/Path
Computed https://github.com/tuist/Path at 0.3.8 (2.46s)
Computing version for https://github.com/apple/swift-log
Computed https://github.com/apple/swift-log at 1.15.1 (0.33s)
Creating working copy for https://github.com/tuist/Path
Working copy of https://github.com/tuist/Path resolved at 0.3.8
Creating working copy for https://github.com/apple/swift-log
Working copy of https://github.com/apple/swift-log resolved at 1.15.1
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 126]
[Planning deferred tasks]
[29 / 51] Path
[37 / 62] Path
[39 / 62] Path
[41 / 62] Path
[53 / 69] Command
[55 / 69] Command
[57 / 70] Path
[60 / 70]
[60 / 70] Logging
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Sources/Command/ThreadSafe.swift:5:25: [1;31merror: [1;39mcannot find 'DispatchQueue' in scope[0;0m
 [0;36m3 |[0;0m /// Type that ensures thread-safe access to the underlying value using DispatchQueue.
 [0;36m4 |[0;0m public final class ThreadSafe<T>: @unchecked Sendable {
 [0;36m5 |[0;0m     private let queue = [4;39mDispatchQueue[0;0m(label: "dev.tuist.Command.ThreadSafe", attributes: .concurrent)
   [0;36m|[0;0m                         `- [1;31merror: [1;39mcannot find 'DispatchQueue' in scope[0;0m
 [0;36m6 |[0;0m     private var _value: T
 [0;36m7 |[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/Command/AsyncThrowingStream+Extras.swift /host/spi-builder-workspace/Sources/Command/Command.swift /host/spi-builder-workspace/Sources/Command/CommandRunner.swift /host/spi-builder-workspace/Sources/Command/FileHandle+Extras.swift /host/spi-builder-workspace/Sources/Command/ThreadSafe.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 -enable-experimental-feature StrictConcurrency -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/Command.build/Debug-webassembly-wasm32/Command-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Command -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/Objects-normal/wasm32/Command_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/Command.build/Debug-webassembly-wasm32/Command-t.build/Objects-normal/wasm32/Modules/Command.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/Objects-normal/wasm32/Modules/Command.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/Objects-normal/wasm32/Command-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/Objects-normal/wasm32/Command-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/Objects-normal/wasm32/Command-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Command.build/Debug-webassembly-wasm32/Command-t.build/Objects-normal/wasm32/Modules/Command.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm