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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 Transmission, reference main (747deb), with Swift 6.0 for Linux on 28 Apr 2025 06:42:07 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/nathantannar4/Transmission.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/nathantannar4/Transmission
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 747debc 2.2.1
Cloned https://github.com/nathantannar4/Transmission.git
Revision (git rev-parse @):
747debcb016be47ba53cabf5862763688475b43e
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/nathantannar4/Transmission.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/nathantannar4/Transmission.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:9029076bb687edc160a3d5201c89e92dd9fa7309f33f090c4234365c83366c31
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Fetching https://github.com/nathantannar4/Engine
[1/1010] Fetching engine
Fetched https://github.com/nathantannar4/Engine from cache (0.39s)
Computing version for https://github.com/nathantannar4/Engine
Computed https://github.com/nathantannar4/Engine at 2.1.2 (0.60s)
Fetching https://github.com/swiftlang/swift-syntax
[1/70233] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax from cache (4.35s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 600.0.1 (2.48s)
Creating working copy for https://github.com/nathantannar4/Engine
Working copy of https://github.com/nathantannar4/Engine resolved at 2.1.2
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 600.0.1
Building for debugging...
[0/5] Write sources
In file included from /host/spi-builder-workspace/.build/checkouts/Engine/Sources/EngineCoreC/visitors.c:5:
/host/spi-builder-workspace/.build/checkouts/Engine/Sources/EngineCoreC/include/visitors.h:8:10: fatal error: 'TargetConditionals.h' file not found
    8 | #include <TargetConditionals.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~
1 error generated.
[3/5] Compiling EngineCoreC visitors.c
[3/5] Write swift-version-24593BA9C3E375BF.txt
BUILD FAILURE 6.0 linux