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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Ifrit, reference main (5cb8ba), with Swift 5.9 for Linux on 22 Apr 2025 12:13:19 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.60.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ukushu/Ifrit.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/ukushu/Ifrit
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 5cb8bad Merge pull request #16 from dfabulich/search-by-closure
Cloned https://github.com/ukushu/Ifrit.git
Revision (git rev-parse @):
5cb8badc28c7a4b7f59a05b8f0da37c363d25b6a
SUCCESS checkout https://github.com/ukushu/Ifrit.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             5.9
Building package at path:  $PWD
https://github.com/ukushu/Ifrit.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-5.9-latest: Pulling from finestructure/spi-images
Digest: sha256:93fe18f778ec94e026baa8cc68b2ae87de241b204c49ca7a3a12cf55897227aa
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-5.9-latest
warning: 'spi-builder-workspace': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Sources/Ifrit/Classes/Fuse_LICENSE
Building for debugging...
[1/19] Emitting module Ifrit
[2/21] Compiling Ifrit Searchable.swift
[3/21] Compiling Ifrit Array+.swift
[4/21] Compiling Ifrit Fuzzy.swift
[5/21] Compiling Ifrit FuzzyResult.swift
[6/21] Compiling Ifrit Levenstain.swift
[7/21] Compiling Ifrit String+.swift
[8/21] Compiling Ifrit FuseProp.swift
[9/21] Compiling Ifrit FuseUtilities.swift
[10/21] Compiling Ifrit FuzzyResultSegment.swift
[11/21] Compiling Ifrit Score.swift
[12/21] Compiling Ifrit String+Fuse.swift
[13/21] Compiling Ifrit Alignment.swift
[14/21] Compiling Ifrit Fuse+String.swift
[15/21] Compiling Ifrit Fuse.swift
[16/21] Compiling Ifrit Fuse+ArrObjects.swift
/host/spi-builder-workspace/Sources/Ifrit/Classes/Fuse+/Fuse+FuseProps.swift:124:25: error: mutation of captured var 'collectionResult' in concurrently-executing code
                        collectionResult.append((
                        ^
[17/21] Compiling Ifrit Fuse+ArrStrings.swift
/host/spi-builder-workspace/Sources/Ifrit/Classes/Fuse+/Fuse+FuseProps.swift:124:25: error: mutation of captured var 'collectionResult' in concurrently-executing code
                        collectionResult.append((
                        ^
[18/21] Compiling Ifrit Fuse+FuseProps.swift
/host/spi-builder-workspace/Sources/Ifrit/Classes/Fuse+/Fuse+FuseProps.swift:124:25: error: mutation of captured var 'collectionResult' in concurrently-executing code
                        collectionResult.append((
                        ^
error: fatalError
BUILD FAILURE 5.9 linux