SwiftWin32 – Build Information – Swift Package Index

Build Information

Failed to build SwiftWin32, reference main (d34ff1), with Swift 6.4 for Wasm on 23 Sep 2026 05:05:58 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/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/compnerd/swift-win32.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/compnerd/swift-win32
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at d34ff1b Update coverage.yml
Submodule path 'Packages/SwiftCOM': checked out 'ebbc617d3b7ba3a2023988a74bebd118deea4cc5'
Submodule path 'Packages/cassowary': checked out 'a438611231901f9f350da27857d786f7979d578b'
Submodule path 'Packages/swift-collections': checked out 'c0549b6284aadd5fd13156316f43fcb43c7fca77'
Submodule path 'Packages/swift-log': checked out 'd8af258aecd93cd8604e74ade3c0fe438bac13f8'
Submodule 'Packages/SwiftCOM' (https://github.com/compnerd/swift-com) registered for path 'Packages/SwiftCOM'
Submodule 'Packages/cassowary' (https://github.com/compnerd/cassowary) registered for path 'Packages/cassowary'
Submodule 'Packages/swift-collections' (https://github.com/apple/swift-collections) registered for path 'Packages/swift-collections'
Submodule 'Packages/swift-log' (https://github.com/apple/swift-log) registered for path 'Packages/swift-log'
Cloning into '/host/spi-builder-workspace/Packages/SwiftCOM'...
Cloning into '/host/spi-builder-workspace/Packages/cassowary'...
Cloning into '/host/spi-builder-workspace/Packages/swift-collections'...
Cloning into '/host/spi-builder-workspace/Packages/swift-log'...
Cloned https://github.com/compnerd/swift-win32.git
Revision (git rev-parse @):
d34ff1b8b3f15cfdf2cb71109a3c313001122a54
SUCCESS checkout https://github.com/compnerd/swift-win32.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/compnerd/swift-win32.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/host -w "$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/compnerd/cassowary.git
[1/395] Fetching cassowary
Fetched https://github.com/compnerd/cassowary.git (0.55s)
Fetching https://github.com/compnerd/swift-com.git
[1/1116] Fetching swift-com
Fetched https://github.com/compnerd/swift-com.git (0.49s)
Fetching https://github.com/apple/swift-log.git
Fetching https://github.com/apple/swift-collections.git
[1/8148] Fetching swift-log
[8149/35834] Fetching swift-log, swift-collections
Fetched https://github.com/apple/swift-log.git (1.26s)
Fetched https://github.com/apple/swift-collections.git (1.27s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.0.6 (1.53s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.15.1 (0.26s)
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.15.1
Creating working copy for https://github.com/compnerd/cassowary.git
Working copy of https://github.com/compnerd/cassowary.git resolved at main (5530573)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.0.6
Creating working copy for https://github.com/compnerd/swift-com.git
Working copy of https://github.com/compnerd/swift-com.git resolved at 28ad4be2d142be022f0c16be4006f15f7ce34d8b
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 446]
[Planning deferred tasks]
[6 / 145] cassowary-product
[85 / 170] CoreAnimation
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Sources/SwiftWin32/CoreGraphics/AffineTransform.swift:4:13: [1;31merror: [1;39mno such module 'ucrt'[0;0m
  [0;36m2 |[0;0m // SPDX-License-Identifier: BSD-3-Clause
  [0;36m3 |[0;0m
  [0;36m4 |[0;0m import func ucrt.sin
    [0;36m|[0;0m             `- [1;31merror: [1;39mno such module 'ucrt'[0;0m
  [0;36m5 |[0;0m import func ucrt.cos
  [0;36m6 |[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/SwiftWin32/CoreGraphics/AffineTransform.swift /host/spi-builder-workspace/Sources/SwiftWin32/CoreGraphics/Point.swift /host/spi-builder-workspace/Sources/SwiftWin32/CoreGraphics/Rect.swift /host/spi-builder-workspace/Sources/SwiftWin32/CoreGraphics/Size.swift /host/spi-builder-workspace/Sources/SwiftWin32/CoreGraphics/Vector.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 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/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name CoreGraphics -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/Objects-normal/wasm32/CoreGraphics_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/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/Objects-normal/wasm32/Modules/CoreGraphics.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/Objects-normal/wasm32/Modules/CoreGraphics.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/Objects-normal/wasm32/CoreGraphics-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/Objects-normal/wasm32/CoreGraphics-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/Objects-normal/wasm32/CoreGraphics-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftWin32.build/Debug-webassembly-wasm32/CoreGraphics-t.build/Objects-normal/wasm32/Modules/CoreGraphics.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm