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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 2.2.0 (e96dd3), with Swift 6.0 for Linux on 23 Apr 2025 19:54:36 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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: 4.60.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/nathantannar4/Transmission.git
Reference: 2.2.0
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/nathantannar4/Transmission
 * tag               2.2.0      -> FETCH_HEAD
HEAD is now at e96dd3d 2.2.0
Cloned https://github.com/nathantannar4/Transmission.git
Revision (git rev-parse @):
e96dd3d51c7bcdee74292e07dcde88865f270527
SUCCESS checkout https://github.com/nathantannar4/Transmission.git at 2.2.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/nathantannar4/Transmission.git
https://github.com/nathantannar4/Transmission.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "engine",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.1.1",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/nathantannar4/Engine"
    }
  ],
  "manifest_display_name" : "Transmission",
  "name" : "Transmission",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "13.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Transmission",
      "targets" : [
        "Transmission"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Transmission",
      "module_type" : "SwiftTarget",
      "name" : "Transmission",
      "path" : "Sources/Transmission",
      "product_dependencies" : [
        "Engine"
      ],
      "product_memberships" : [
        "Transmission"
      ],
      "sources" : [
        "Sources/DestinationCoordinator.swift",
        "Sources/DestinationLink.swift",
        "Sources/DestinationLinkAdapter.swift",
        "Sources/DestinationLinkModifier.swift",
        "Sources/DestinationLinkTransition.swift",
        "Sources/DestinationLinkTransitionRepresentable.swift",
        "Sources/DestinationSourceViewLink.swift",
        "Sources/DismissPresentationLink.swift",
        "Sources/DynamicProperty/WeakState.swift",
        "Sources/Extensions/Animation+Extensions.swift",
        "Sources/Extensions/CGAffineTransform+Extensions.swift",
        "Sources/Extensions/CGRect+Extensions.swift",
        "Sources/Extensions/UIColor+Extensions.swift",
        "Sources/Extensions/UIGestureRecognizer+Extensions.swift",
        "Sources/Extensions/UIKit+Extensions.swift",
        "Sources/Extensions/UINavigationController+Extensions.swift",
        "Sources/Extensions/UIScreen+Extensions.swift",
        "Sources/Extensions/UISheetPresentationController+Extensions.swift",
        "Sources/Extensions/UISplitViewController+Extensions.swift",
        "Sources/Extensions/UIView+Extensions.swift",
        "Sources/Extensions/UIViewController+Extensions.swift",
        "Sources/Extensions/UIWindow+Extensions.swift",
        "Sources/Hosting/AnyHostingView.swift",
        "Sources/Hosting/DestinationHostingController.swift",
        "Sources/Hosting/PresentationHostingController.swift",
        "Sources/Hosting/PresentationHostingWindow.swift",
        "Sources/Hosting/SnapshotRenderer.swift",
        "Sources/Presentation Controllers/CardPresentationController.swift",
        "Sources/Presentation Controllers/InteractivePresentationController.swift",
        "Sources/Presentation Controllers/MatchedGeometryPresentationController.swift",
        "Sources/Presentation Controllers/PopoverPresentationController.swift",
        "Sources/Presentation Controllers/PresentationController.swift",
        "Sources/Presentation Controllers/PresentationControllerTransition.swift",
        "Sources/Presentation Controllers/SheetPresentationController.swift",
        "Sources/Presentation Controllers/SlidePresentationController.swift",
        "Sources/Presentation Controllers/ToastPresentationController.swift",
        "Sources/PresentationCoordinator.swift",
        "Sources/PresentationLink.swift",
        "Sources/PresentationLinkAdapter.swift",
        "Sources/PresentationLinkAsymmetricTransition.swift",
        "Sources/PresentationLinkModifier.swift",
        "Sources/PresentationLinkTransition.swift",
        "Sources/PresentationLinkTransitionRepresentable.swift",
        "Sources/PresentationSourceViewLink.swift",
        "Sources/QuickLookPreviewLink.swift",
        "Sources/ShareSheetLink.swift",
        "Sources/StatusBarModifier.swift",
        "Sources/Supporting Files/ObjCBox.swift",
        "Sources/Supporting Files/PortalView.swift",
        "Sources/Supporting Files/PresentationDelegate.swift",
        "Sources/Supporting Files/TransitionSourceView.swift",
        "Sources/Supporting Files/WindowReader.swift",
        "Sources/TransitionReader+AppearanceTransition .swift",
        "Sources/TransitionReader.swift",
        "Sources/ViewControllerReader.swift",
        "Sources/ViewControllerRepresentableAdapter.swift",
        "Sources/ViewRepresentableAdapter.swift",
        "Sources/WindowLink.swift",
        "Sources/WindowLinkModifier.swift",
        "Sources/WindowLinkTransition.swift",
        "module.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 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
[1/1003] Fetching engine
Fetched https://github.com/nathantannar4/Engine from cache (0.31s)
Computing version for https://github.com/nathantannar4/Engine
Computed https://github.com/nathantannar4/Engine at 2.1.1 (0.49s)
Fetching https://github.com/swiftlang/swift-syntax
[1/70196] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax from cache (4.61s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 600.0.1 (3.59s)
Creating working copy for https://github.com/nathantannar4/Engine
Working copy of https://github.com/nathantannar4/Engine resolved at 2.1.1
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
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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
[0/1] Planning build
Building for debugging...
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.
[0/2] Compiling EngineCoreC visitors.c
[0/2] Write swift-version-24593BA9C3E375BF.txt
BUILD FAILURE 6.0 linux