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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 SwiftBackports, reference 1.0.3 (ddca6a), with Swift 6.1 for Linux on 27 Apr 2025 14:29:55 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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/shaps80/SwiftBackports.git
Reference: 1.0.3
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/shaps80/SwiftBackports
 * tag               1.0.3      -> FETCH_HEAD
HEAD is now at ddca6a2 Checkpoint that compiles
Cloned https://github.com/shaps80/SwiftBackports.git
Revision (git rev-parse @):
ddca6a237c1ba2291d5a3cc47ec8480ce6e9f805
SUCCESS checkout https://github.com/shaps80/SwiftBackports.git at 1.0.3
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/shaps80/SwiftBackports.git
https://github.com/shaps80/SwiftBackports.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftBackports",
  "name" : "SwiftBackports",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "11.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "tvos",
      "version" : "11.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftBackports",
      "targets" : [
        "SwiftBackports"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "SwiftBackportsTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftBackportsTests",
      "path" : "Tests/SwiftBackportsTests",
      "sources" : [
        "TransferableTest.swift"
      ],
      "target_dependencies" : [
        "SwiftBackports"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftBackports",
      "module_type" : "SwiftTarget",
      "name" : "SwiftBackports",
      "path" : "Sources/SwiftBackports",
      "product_memberships" : [
        "SwiftBackports"
      ],
      "sources" : [
        "Backport.swift",
        "CoreTransferable/Representations/Codable+Representation.swift",
        "CoreTransferable/Representations/Data+Representation.swift",
        "CoreTransferable/Representations/File+Representations.swift",
        "CoreTransferable/Representations/Never+Representation.swift",
        "CoreTransferable/Representations/Tuple+Representation.swift",
        "CoreTransferable/Representations/_ConditionalRepresentation.swift",
        "CoreTransferable/Support/NSItemProvider+Transferable.swift",
        "CoreTransferable/Support/ReceivedTransferredFile.swift",
        "CoreTransferable/Support/SentTransferredFile.swift",
        "CoreTransferable/Support/Visibility.swift",
        "CoreTransferable/TransferRepresentationBuilder.swift",
        "CoreTransferable/Transferable.swift",
        "CoreTransferable/TransferableRepresentation.swift",
        "CoreTransferable/Transferables/AttributedString+Transferable.swift",
        "CoreTransferable/Transferables/Data+Transferable.swift",
        "CoreTransferable/Transferables/Never+Transferable.swift",
        "CoreTransferable/Transferables/String+Transferable.swift",
        "CoreTransferable/Transferables/URL+Transferable.swift",
        "URLSession/URLSession+Async.swift",
        "UniformTypeIdentifiers/CoreTypes.swift",
        "UniformTypeIdentifiers/UTTagClass.swift",
        "UniformTypeIdentifiers/UTType.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/24] Emitting module SwiftBackports
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[4/26] Compiling SwiftBackports _ConditionalRepresentation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[5/26] Compiling SwiftBackports NSItemProvider+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[6/26] Compiling SwiftBackports ReceivedTransferredFile.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[7/26] Compiling SwiftBackports SentTransferredFile.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[8/26] Compiling SwiftBackports Visibility.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[9/26] Compiling SwiftBackports TransferRepresentationBuilder.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[10/26] Compiling SwiftBackports File+Representations.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[11/26] Compiling SwiftBackports Never+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[12/26] Compiling SwiftBackports Tuple+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[13/26] Compiling SwiftBackports URL+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[14/26] Compiling SwiftBackports URLSession+Async.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[15/26] Compiling SwiftBackports CoreTypes.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[16/26] Compiling SwiftBackports Data+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[17/26] Compiling SwiftBackports Never+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[18/26] Compiling SwiftBackports String+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[19/26] Compiling SwiftBackports Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[20/26] Compiling SwiftBackports TransferableRepresentation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[21/26] Compiling SwiftBackports AttributedString+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[22/26] Compiling SwiftBackports Backport.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[23/26] Compiling SwiftBackports Codable+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[24/26] Compiling SwiftBackports Data+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[25/26] Compiling SwiftBackports UTTagClass.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[26/26] Compiling SwiftBackports UTType.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/23] Compiling SwiftBackports Data+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[3/23] Compiling SwiftBackports Never+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[4/23] Compiling SwiftBackports String+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[5/25] Compiling SwiftBackports Backport.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[6/25] Compiling SwiftBackports Codable+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[7/25] Compiling SwiftBackports Data+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/25] Emitting module SwiftBackports
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[9/25] Compiling SwiftBackports SentTransferredFile.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[10/25] Compiling SwiftBackports Visibility.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[11/25] Compiling SwiftBackports TransferRepresentationBuilder.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[12/25] Compiling SwiftBackports _ConditionalRepresentation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[13/25] Compiling SwiftBackports NSItemProvider+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[14/25] Compiling SwiftBackports ReceivedTransferredFile.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[15/25] Compiling SwiftBackports URL+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[16/25] Compiling SwiftBackports URLSession+Async.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[17/25] Compiling SwiftBackports CoreTypes.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[18/25] Compiling SwiftBackports File+Representations.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[19/25] Compiling SwiftBackports Never+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[20/25] Compiling SwiftBackports Tuple+Representation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[21/25] Compiling SwiftBackports Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[22/25] Compiling SwiftBackports TransferableRepresentation.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[23/25] Compiling SwiftBackports AttributedString+Transferable.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[24/25] Compiling SwiftBackports UTTagClass.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
[25/25] Compiling SwiftBackports UTType.swift
/host/spi-builder-workspace/Sources/SwiftBackports/Backport.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 | import ObjectiveC
 3 |
BUILD FAILURE 6.1 linux