Assertions – Build Information – Swift Package Index

Build Information

Failed to build Assertions, reference main (c815e2), with Swift 6.4 for Linux on 22 Sep 2026 22:29:50 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:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 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:         linux
Swift version:             6.4
Building package at path:  $PWD
https://github.com/harlanhaskins/assertions.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344847-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:c77fcce225e223ac0fafed844619173fc6de8d62dd560eeb28db3182af6a282b
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest
Fetching https://github.com/apple/swift-collections
[1/27662] Fetching swift-collections
Fetched https://github.com/apple/swift-collections (1.12s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.6.0 (1.43s)
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]
[72 / 143]
[82 / 153] InternalCollectionsUtilities
[95 / 173] _RopeModule
[99 / 191] HashTreeCollections
[100 / 192] _RopeModule
[108 / 192] _RopeModule
[110 / 192] OrderedCollections
[111 / 192] OrderedCollections
[122 / 192] OrderedCollections
[124 / 192] OrderedCollections
[124 / 192] _RopeModule
[125 / 192] OrderedCollections
[129 / 192] InternalCollectionsUtilities
[131 / 192] InternalCollectionsUtilities
[134 / 192] HeapModule
[143 / 192] HashTreeCollections
[146 / 192] HashTreeCollections
[147 / 193] HeapModule
[152 / 194]
[155 / 205] ContainersPreview
[158 / 215] ContainersPreview
[160 / 215] _RopeModule
[168 / 215] DequeModule
[172 / 215] BitCollections
[174 / 215] ContainersPreview
[176 / 216] BitCollections
[180 / 216] BitCollections
[185 / 216] BitCollections
[186 / 216]
[191 / 217] ContainersPreview
[196 / 226] DequeModule
[197 / 227] HashTreeCollections
[203 / 227] HashTreeCollections
[206 / 228] BitCollections
[206 / 228] DequeModule
[206 / 229] DequeModule
[228 / 238] Assertions
[235 / 243] Assertions
error: SwiftCompile normal x86_64 failed with a nonzero exit code. Command line:     cd /host

/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 x86_64-unknown-linux-gnu -disable-objc-interop -I /host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64 -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 -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -fno-omit-frame-pointer -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-linux-x86_64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/Assertions-t.build/DerivedSources-normal/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/Assertions-t.build/DerivedSources/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/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-linux-x86_64/Assertions-t.build/Objects-normal/x86_64/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-linux-x86_64/Assertions-t.build/Objects-normal/x86_64/Modules/Assertions.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/Assertions-t.build/Objects-normal/x86_64/Modules/Assertions.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/Assertions-t.build/Objects-normal/x86_64/Assertions-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/Assertions-t.build/Objects-normal/x86_64/Assertions-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/Assertions-t.build/Objects-normal/x86_64/Assertions-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Assertions.build/Debug-linux-x86_64/Assertions-t.build/Objects-normal/x86_64/Modules/Assertions.swiftmodule
error: Build failed
BUILD FAILURE 6.4 linux