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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 AStack, reference master (7dced7), with Swift 6.1 for Linux on 27 Apr 2025 13:02:27 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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/jasonnam/AStack.git
Reference: master
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/jasonnam/AStack
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 7dced75 Merge pull request #4 from zntfdr/sizeClass
Cloned https://github.com/jasonnam/AStack.git
Revision (git rev-parse @):
7dced752f1ef4667f3d8e0c52f8475be38017900
SUCCESS checkout https://github.com/jasonnam/AStack.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/jasonnam/AStack.git
https://github.com/jasonnam/AStack.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "AStack",
  "name" : "AStack",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "AStack",
      "targets" : [
        "AStack"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AStack",
      "module_type" : "SwiftTarget",
      "name" : "AStack",
      "path" : "Sources/AStack",
      "product_memberships" : [
        "AStack"
      ],
      "sources" : [
        "AHStack.swift",
        "AVStack.swift",
        "ContentSizeCategory.swift",
        "LazyAHStack.swift",
        "LazyAVStack.swift",
        "ObservingOptions.swift",
        "UserInterfaceSizeClass.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$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)
[3/10] Emitting module AStack
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[4/10] Compiling AStack AVStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[5/10] Compiling AStack AHStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[6/10] Compiling AStack ContentSizeCategory.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[7/10] Compiling AStack UserInterfaceSizeClass.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[8/10] Compiling AStack LazyAVStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[9/10] Compiling AStack ObservingOptions.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[10/10] Compiling AStack LazyAHStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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
[2/9] Compiling AStack UserInterfaceSizeClass.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[3/9] Compiling AStack ObservingOptions.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[4/9] Compiling AStack AHStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[5/9] Compiling AStack ContentSizeCategory.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[6/9] Compiling AStack LazyAHStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
error: emit-module command failed with exit code 1 (use -v to see invocation)
[7/9] Compiling AStack AVStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[8/9] Compiling AStack LazyAVStack.swift
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
[9/9] Emitting module AStack
/host/spi-builder-workspace/Sources/AStack/AHStack.swift:1:8: error: no such module 'SwiftUI'
 1 | import SwiftUI
   |        `- error: no such module 'SwiftUI'
 2 |
 3 | /// Adaptive `HStack`.
BUILD FAILURE 6.1 linux