Assertions – Build Information – Swift Package Index

Build Information

Failed to build Assertions, reference main (c815e2), with Swift 6.4 for Wasm on 22 Sep 2026 22:29:50 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/harlanhaskins/assertions.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/harlanhaskins/assertions
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at c815e2c Initial commit
Cloned https://github.com/harlanhaskins/assertions.git
Revision (git rev-parse @):
c815e2cff666d1cbe603e782ab01dfe2f39c1f73
SUCCESS checkout https://github.com/harlanhaskins/assertions.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/harlanhaskins/assertions.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$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-collections
[1/27662] Fetching swift-collections
Fetched https://github.com/apple/swift-collections (1.38s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.6.0 (1.69s)
Creating working copy for https://github.com/apple/swift-collections
Working copy of https://github.com/apple/swift-collections resolved at 1.6.0
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 328]
[Planning deferred tasks]
[62 / 133]
[71 / 143] InternalCollectionsUtilities
[72 / 143] InternalCollectionsUtilities
[82 / 153] HeapModule
[87 / 171] _RopeModule
[88 / 171] _RopeModule
[96 / 172] _RopeModule
[97 / 172] _RopeModule
[98 / 172] OrderedCollections
[99 / 172] OrderedCollections
[101 / 172] OrderedCollections
[101 / 172] _RopeModule
[112 / 172] OrderedCollections
[116 / 172] InternalCollectionsUtilities
[118 / 172] InternalCollectionsUtilities
[123 / 172] HeapModule
[126 / 175] InternalCollectionsUtilities
[131 / 203] BitCollections
[132 / 203] HeapModule
[140 / 203] HashTreeCollections
[141 / 204] OrderedCollections
[146 / 205] BitCollections
[153 / 205] HashTreeCollections
[156 / 205] DequeModule
[158 / 205] ContainersPreview
[162 / 205] BitCollections
[165 / 206] ContainersPreview
[170 / 206] BitCollections
[171 / 206] BitCollections
[172 / 207] InternalCollectionsUtilities
[176 / 217] _RopeModule
[180 / 217] DequeModule
[183 / 217] HashTreeCollections
[191 / 217] HashTreeCollections
[192 / 217] HashTreeCollections
[193 / 217] BitCollections
[196 / 218] DequeModule
[218 / 228] Collections
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

[225 / 233] Assertions
/host/spi-builder-workspace/Sources/Assertions/AssertionManager.swift:50:2: [1;31merror: [1;39munknown attribute 'Observable'[0;0m
 [0;36m48 |[0;0m /// AssertionManager is `@Observable` so clients can observe the state of `value`. To receive synchronous updates,
 [0;36m49 |[0;0m /// register yourself as the `delegate` instead.
 [0;36m50 |[0;0m @Observable
    [0;36m|[0;0m  `- [1;31merror: [1;39munknown attribute 'Observable'[0;0m
 [0;36m51 |[0;0m public final class AssertionManager<Value: AssertionValue>: CustomStringConvertible, AssertionManaging {
 [0;36m52 |[0;0m     struct ActiveAssertion {
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/Assertions/Assertion.swift /host/spi-builder-workspace/Sources/Assertions/AssertionManager.swift /host/spi-builder-workspace/Sources/Assertions/AssertionValue.swift /host/spi-builder-workspace/Sources/Assertions/UUID+ShortID.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 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/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Assertions -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/Objects-normal/wasm32/Assertions_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/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/Objects-normal/wasm32/Modules/Assertions.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/Objects-normal/wasm32/Modules/Assertions.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/Objects-normal/wasm32/Assertions-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/Objects-normal/wasm32/Assertions-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/Objects-normal/wasm32/Assertions-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-webassembly-wasm32/Assertions-t.build/Objects-normal/wasm32/Modules/Assertions.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm