Swift Package IndexBuild Information
Failed to build EventDrivenSwift, reference 5.2.0 (951b5c), with Swift 6.4 for Linux on 18 Sep 2026 15:39:01 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/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>&1Build Log
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RunAll
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Builder version: 5.1.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/Flowduino/EventDrivenSwift.git
Reference: 5.2.0
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/Flowduino/EventDrivenSwift
* tag 5.2.0 -> FETCH_HEAD
HEAD is now at 951b5c8 Merge pull request #7 from Flowduino/custom-event-filtering
Cloned https://github.com/Flowduino/EventDrivenSwift.git
Revision (git rev-parse @):
951b5c841868987a6d4f7977694d74eb72e7c96a
SUCCESS checkout https://github.com/Flowduino/EventDrivenSwift.git at 5.2.0
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Build
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Selected platform: linux
Swift version: 6.4
Building package at path: $PWD
https://github.com/Flowduino/EventDrivenSwift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/host -w "$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/Flowduino/ThreadSafeSwift.git
Fetching https://github.com/Flowduino/Observable.git
[1/53] Fetching threadsafeswift
[54/169] Fetching threadsafeswift, observable
Fetched https://github.com/Flowduino/ThreadSafeSwift.git (0.43s)
Fetched https://github.com/Flowduino/Observable.git (0.43s)
Computing version for https://github.com/Flowduino/Observable.git
Computed https://github.com/Flowduino/Observable.git at 2.0.0 (0.63s)
Computing version for https://github.com/Flowduino/ThreadSafeSwift.git
Computed https://github.com/Flowduino/ThreadSafeSwift.git at 1.1.0 (0.18s)
Creating working copy for https://github.com/Flowduino/Observable.git
Working copy of https://github.com/Flowduino/Observable.git resolved at 2.0.0
Creating working copy for https://github.com/Flowduino/ThreadSafeSwift.git
Working copy of https://github.com/Flowduino/ThreadSafeSwift.git resolved at 1.1.0
Building for debugging...
[Pre-planning 1 / 126]
[33 / 55] ThreadSafeSwift
error: SwiftCompile normal x86_64 failed with a nonzero exit code. Command line: cd /host
[47 / 65] Observable
/host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/ObservableClass.swift:20:41: [1;31merror: [1;39mcannot find type 'ObservableObject' in scope[0;0m
[0;36m18 |[0;0m */
[0;36m19 |[0;0m @available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
[0;36m20 |[0;0m open class ObservableClass: Observable, [4;39mObservableObject[0;0m {
[0;36m|[0;0m `- [1;31merror: [1;39mcannot find type 'ObservableObject' in scope[0;0m
[0;36m21 |[0;0m /**
[0;36m22 |[0;0m Contains a Weak Reference to an Observer.
/host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/ObservableThreadSafeClass.swift:20:51: [1;31merror: [1;39mcannot find type 'ObservableObject' in scope[0;0m
[0;36m18 |[0;0m */
[0;36m19 |[0;0m @available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
[0;36m20 |[0;0m open class ObservableThreadSafeClass: Observable, [4;39mObservableObject[0;0m {
[0;36m|[0;0m `- [1;31merror: [1;39mcannot find type 'ObservableObject' in scope[0;0m
[0;36m21 |[0;0m /**
[0;36m22 |[0;0m Contains a Weak Reference to an Observer.
/host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/ObservableThread.swift:20:12: [1;31merror: [1;39mcannot inherit from class 'Thread' (compiled with Swift 6.4.2) because it has overridable members that could not be loaded in Swift 5.10[0;0m
[0;36m18 |[0;0m */
[0;36m19 |[0;0m @available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
[0;36m20 |[0;0m open class ObservableThread: Thread, Observable, ObservableObject {
[0;36m|[0;0m `- [1;31merror: [1;39mcannot inherit from class 'Thread' (compiled with Swift 6.4.2) because it has overridable members that could not be loaded in Swift 5.10[0;0m
[0;36m21 |[0;0m /**
[0;36m22 |[0;0m Contains a Weak Reference to an Observer.
/host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/ObservableThread.swift:20:50: [1;31merror: [1;39mcannot find type 'ObservableObject' in scope[0;0m
[0;36m18 |[0;0m */
[0;36m19 |[0;0m @available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
[0;36m20 |[0;0m open class ObservableThread: Thread, Observable, [4;39mObservableObject[0;0m {
[0;36m|[0;0m `- [1;31merror: [1;39mcannot find type 'ObservableObject' in scope[0;0m
[0;36m21 |[0;0m /**
[0;36m22 |[0;0m Contains a Weak Reference to an Observer.
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/Keyed/KeyedObservable.swift /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/Keyed/KeyedObservableClass.swift /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/Keyed/KeyedObservableThread.swift /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/Keyed/KeyedObservableThreadSafeClass.swift /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/Observable.swift /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/ObservableClass.swift /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/ObservableThread.swift /host/spi-builder-workspace/.build/checkouts/Observable/Sources/Observable/ObservableThreadSafeClass.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 -suppress-warnings -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 -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/Observable.build/Debug-linux-x86_64/Observable-t.build/DerivedSources-normal/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/DerivedSources/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Observable -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/Objects-normal/x86_64/Observable_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/Observable.build/Debug-linux-x86_64/Observable-t.build/Objects-normal/x86_64/Modules/Observable.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/Objects-normal/x86_64/Modules/Observable.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/Objects-normal/x86_64/Observable-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/Objects-normal/x86_64/Observable-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/Objects-normal/x86_64/Observable-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Observable.build/Debug-linux-x86_64/Observable-t.build/Objects-normal/x86_64/Modules/Observable.swiftmodule
error: Build failed
BUILD FAILURE 6.4 linux