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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 Assetizer, reference 0.2.0 (fe5c96), with Swift 6.1 for Linux on 25 Apr 2025 16:31:05 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/jkmathew/assetizer.git
Reference: 0.2.0
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/jkmathew/assetizer
 * tag               0.2.0      -> FETCH_HEAD
HEAD is now at fe5c964 Readme updated
Cloned https://github.com/jkmathew/assetizer.git
Revision (git rev-parse @):
fe5c964031b06f8f688b7855b46e9bcb098552ce
SUCCESS checkout https://github.com/jkmathew/assetizer.git at 0.2.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/jkmathew/assetizer.git
https://github.com/jkmathew/assetizer.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "commander",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.8.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/kylef/Commander.git"
    }
  ],
  "manifest_display_name" : "Assetizer",
  "name" : "Assetizer",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Assetizer",
      "targets" : [
        "Assetizer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "assetize",
      "targets" : [
        "assetize"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "assetize",
      "module_type" : "SwiftTarget",
      "name" : "assetize",
      "path" : "Sources/assetize",
      "product_dependencies" : [
        "Commander"
      ],
      "product_memberships" : [
        "assetize"
      ],
      "sources" : [
        "ArgumentConvertibles.swift",
        "main.swift"
      ],
      "target_dependencies" : [
        "Assetizer"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "Assetizer",
      "module_type" : "SwiftTarget",
      "name" : "Assetizer",
      "path" : "Sources/Assetizer",
      "product_memberships" : [
        "Assetizer",
        "assetize"
      ],
      "sources" : [
        "AssetWriter.swift",
        "DeviceIdiom.swift",
        "Error.swift",
        "URLConvertible.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
Fetching https://github.com/kylef/Commander.git
[1/1588] Fetching commander
Fetched https://github.com/kylef/Commander.git from cache (0.22s)
Computing version for https://github.com/kylef/Commander.git
Computed https://github.com/kylef/Commander.git at 0.9.2 (0.67s)
Fetching https://github.com/kylef/Spectre.git
[1/1021] Fetching spectre
Fetched https://github.com/kylef/Spectre.git from cache (0.19s)
Computing version for https://github.com/kylef/Spectre.git
Computed https://github.com/kylef/Spectre.git at 0.10.1 (2.01s)
Creating working copy for https://github.com/kylef/Commander.git
Working copy of https://github.com/kylef/Commander.git resolved at 0.9.2
Creating working copy for https://github.com/kylef/Spectre.git
Working copy of https://github.com/kylef/Spectre.git resolved at 0.10.1
Building for debugging...
[0/9] Write sources
[3/9] Write swift-version-24593BA9C3E375BF.txt
[5/23] Emitting module Commander
[6/24] Compiling Commander CommandType.swift
[7/24] Compiling Commander ArgumentConvertible.swift
[8/24] Compiling Commander ArgumentDescription.swift
[9/24] Compiling Commander ArgumentParser.swift
[10/24] Compiling Commander Group.swift
[11/24] Compiling Commander Command.swift
[12/24] Compiling Commander CommandRunner.swift
[13/24] Compiling Commander Error.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[14/24] Emitting module Assetizer
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
[15/24] Compiling Assetizer AssetWriter.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
[16/24] Compiling Assetizer Error.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
[17/24] Compiling Assetizer DeviceIdiom.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
[18/24] Compiling Assetizer URLConvertible.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
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...
[0/6] Write swift-version-24593BA9C3E375BF.txt
[2/20] Compiling Assetizer URLConvertible.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
[3/20] Compiling Assetizer Error.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/20] Compiling Assetizer DeviceIdiom.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
[5/20] Emitting module Assetizer
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
[6/20] Compiling Assetizer AssetWriter.swift
/host/spi-builder-workspace/Sources/Assetizer/AssetWriter.swift:8:8: error: no such module 'AppKit'
  6 | //
  7 |
  8 | import AppKit
    |        `- error: no such module 'AppKit'
  9 | import Foundation
 10 |
BUILD FAILURE 6.1 linux