Arrow – Build Information – Swift Package Index

Build Information

Failed to build Arrow, reference master (32f1dd), with Swift 6.4 for Wasm on 21 Sep 2026 06:13:25 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344847-0":/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/freshOS/Arrow.git
Reference: master
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/freshOS/Arrow
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 32f1ddf Update README.md
Cloned https://github.com/freshOS/Arrow.git
Revision (git rev-parse @):
32f1ddfe4160261eb0d0ddd63d52cc49babe7f00
SUCCESS checkout https://github.com/freshOS/Arrow.git at master
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/freshOS/Arrow.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344847-0":/host -w "$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
warning: 'spi-builder-workspace': /host/spi-builder-workspace/Package.swift:11:19: warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
 9 |         .macOS(.v10_13),
10 |         .tvOS(.v12),
11 |         .watchOS(.v4)],
   |                   `- warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
12 |     products: [.library(name: "Arrow", targets: ["Arrow"])],
13 |     targets: [
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Building for debugging...
[Planning deferred tasks]
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Sources/Arrow/Arrow.swift:63:25: [1;31merror: [1;39mstatic property 'dateFormatter' is not concurrency-safe because it is nonisolated global shared mutable state[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
 [0;36m61 |[0;0m public actor Arrow {
 [0;36m62 |[0;0m
 [0;36m63 |[0;0m     internal static var dateFormatter: DateFormatter? = DateFormatter()
    [0;36m|[0;0m                         |- [1;31merror: [1;39mstatic property 'dateFormatter' is not concurrency-safe because it is nonisolated global shared mutable state[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
    [0;36m|[0;0m                         |- [1;39mnote: [1;39mconvert 'dateFormatter' to a 'let' constant to make 'Sendable' shared state immutable[0;0m
    [0;36m|[0;0m                         |- [1;39mnote: [1;39madd '@MainActor' to make static property 'dateFormatter' part of global actor 'MainActor'[0;0m
    [0;36m|[0;0m                         `- [1;39mnote: [1;39mdisable concurrency-safety checks if accesses are protected by an external synchronization mechanism[0;0m
 [0;36m64 |[0;0m     internal static var useReferenceDate = false
 [0;36m65 |[0;0m
/host/spi-builder-workspace/Sources/Arrow/Arrow.swift:64:25: [1;31merror: [1;39mstatic property 'useReferenceDate' is not concurrency-safe because it is nonisolated global shared mutable state[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
 [0;36m62 |[0;0m
 [0;36m63 |[0;0m     internal static var dateFormatter: DateFormatter? = DateFormatter()
 [0;36m64 |[0;0m     internal static var useReferenceDate = false
    [0;36m|[0;0m                         |- [1;31merror: [1;39mstatic property 'useReferenceDate' is not concurrency-safe because it is nonisolated global shared mutable state[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable\MutableGlobalVariable]8;;\]
    [0;36m|[0;0m                         |- [1;39mnote: [1;39mconvert 'useReferenceDate' to a 'let' constant to make 'Sendable' shared state immutable[0;0m
    [0;36m|[0;0m                         |- [1;39mnote: [1;39madd '@MainActor' to make static property 'useReferenceDate' part of global actor 'MainActor'[0;0m
    [0;36m|[0;0m                         `- [1;39mnote: [1;39mdisable concurrency-safety checks if accesses are protected by an external synchronization mechanism[0;0m
 [0;36m65 |[0;0m
 [0;36m66 |[0;0m     /// Sets the defaut dateFormat for parsing NSDates.
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/DerivedSources/resource_bundle_accessor.swift /host/spi-builder-workspace/Sources/Arrow/Arrow.swift /host/spi-builder-workspace/Sources/Arrow/Extensions.swift /host/spi-builder-workspace/Sources/Arrow/JSON.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_AVAILABLE -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/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Arrow -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/Objects-normal/wasm32/Arrow_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/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/Objects-normal/wasm32/Modules/Arrow.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/Objects-normal/wasm32/Modules/Arrow.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/Objects-normal/wasm32/Arrow-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/Objects-normal/wasm32/Arrow-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/Objects-normal/wasm32/Arrow-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Arrow.build/Debug-webassembly-wasm32/Arrow-t.build/Objects-normal/wasm32/Modules/Arrow.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm