Swift Package Index

Build Information

Failed to build ErrorAssertions, reference main (466b92), with Swift 6.3 for Linux on 11 Apr 2026 05:26:28 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/SlaunchaMan/ErrorAssertions.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/SlaunchaMan/ErrorAssertions
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 466b920 Merge pull request #16 from SlaunchaMan/dependabot/bundler/cocoapods-downloader-1.6.3
Cloned https://github.com/SlaunchaMan/ErrorAssertions.git
Revision (git rev-parse @):
466b9208031131bf283531e945c28dc79ed9e2dc
SUCCESS checkout https://github.com/SlaunchaMan/ErrorAssertions.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.3
Building package at path:  $PWD
https://github.com/SlaunchaMan/ErrorAssertions.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:5a7d791d2ead8a924b1292cb31bf3288eabcfe8880e0b005b00b45b71a5bc36a
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
[4/9] Compiling ErrorAssertions RestorationHandler.swift
[5/9] Compiling ErrorAssertions AnonymousError.swift
[6/9] Compiling ErrorAssertions AssertWrapper.swift
[7/9] Compiling ErrorAssertions FatalErrorWrapper.swift
[8/9] Emitting module ErrorAssertions
[9/9] Compiling ErrorAssertions PreconditionWrapper.swift
[11/16] Compiling ErrorAssertionExpectations Unreachable.swift
[12/16] Compiling ErrorAssertionExpectations ClosureThread.swift
/host/spi-builder-workspace/Sources/ErrorAssertionExpectations/Utilities/ClosureThread.swift:10:22: error: cannot inherit from class 'Thread' (compiled with Swift 6.3) because it has overridable members that could not be loaded in Swift 5.10
 8 | import Foundation
 9 |
10 | internal final class ClosureThread: Thread {
   |                      `- error: cannot inherit from class 'Thread' (compiled with Swift 6.3) because it has overridable members that could not be loaded in Swift 5.10
11 |
12 |     private let closure: () -> Void
error: emit-module command failed with exit code 1 (use -v to see invocation)
[13/16] Compiling ErrorAssertionExpectations FatalErrorExpectations.swift
[14/16] Compiling ErrorAssertionExpectations AssertExpectations.swift
[15/16] Compiling ErrorAssertionExpectations PreconditionExpectations.swift
[16/16] Emitting module ErrorAssertionExpectations
/host/spi-builder-workspace/Sources/ErrorAssertionExpectations/Utilities/ClosureThread.swift:10:22: error: cannot inherit from class 'Thread' (compiled with Swift 6.3) because it has overridable members that could not be loaded in Swift 5.10
 8 | import Foundation
 9 |
10 | internal final class ClosureThread: Thread {
   |                      `- error: cannot inherit from class 'Thread' (compiled with Swift 6.3) because it has overridable members that could not be loaded in Swift 5.10
11 |
12 |     private let closure: () -> Void
BUILD FAILURE 6.3 linux