Swift Package Index

Build Information

Failed to build ErrorAssertions, reference 0.4.0 (fe2b59), with Swift 6.3 for Linux on 11 Apr 2026 05:27:05 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: 0.4.0
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/SlaunchaMan/ErrorAssertions
 * tag               0.4.0      -> FETCH_HEAD
HEAD is now at fe2b592 Bump version in podspec.
Cloned https://github.com/SlaunchaMan/ErrorAssertions.git
Revision (git rev-parse @):
fe2b592844372f361f2a33bbbce6a48481b6c79e
SUCCESS checkout https://github.com/SlaunchaMan/ErrorAssertions.git at 0.4.0
========================================
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] Emitting module ErrorAssertions
[7/9] Compiling ErrorAssertions AssertWrapper.swift
[8/9] Compiling ErrorAssertions FatalErrorWrapper.swift
[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
[13/16] Compiling ErrorAssertionExpectations FatalErrorExpectations.swift
[14/16] Compiling ErrorAssertionExpectations PreconditionExpectations.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[15/16] 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
[16/16] Compiling ErrorAssertionExpectations AssertExpectations.swift
BUILD FAILURE 6.3 linux