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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 Sdifft, reference master (9a43e2), with Swift 6.1 for Linux on 27 Apr 2025 09:23:13 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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/wzxha/Sdifft.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/wzxha/Sdifft
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 9a43e27 Update README
Cloned https://github.com/wzxha/Sdifft.git
Revision (git rev-parse @):
9a43e27cf76394b9648ccd5c0fb3913a0b86000f
SUCCESS checkout https://github.com/wzxha/Sdifft.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/wzxha/Sdifft.git
https://github.com/wzxha/Sdifft.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Sdifft",
  "name" : "Sdifft",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Sdifft",
      "targets" : [
        "Sdifft"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SdifftTests",
      "module_type" : "SwiftTarget",
      "name" : "SdifftTests",
      "path" : "Tests/SdifftTests",
      "sources" : [
        "DiffTests.swift",
        "NSAttributedString+DiffTests.swift"
      ],
      "target_dependencies" : [
        "Sdifft"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Sdifft",
      "module_type" : "SwiftTarget",
      "name" : "Sdifft",
      "path" : "Sources/Sdifft",
      "product_memberships" : [
        "Sdifft"
      ],
      "sources" : [
        "Diff.swift",
        "NSAttributedString+Diff.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$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
[3/5] Emitting module Sdifft
[4/5] Compiling Sdifft Diff.swift
[5/5] Compiling Sdifft NSAttributedString+Diff.swift
/host/spi-builder-workspace/Sources/Sdifft/NSAttributedString+Diff.swift:85:58: error: missing argument for parameter 'string' in call
 83 |
 84 |     public convenience init(source: String, target: String, attributes: DiffAttributes) {
 85 |         let attributedString = NSMutableAttributedString()
    |                                                          `- error: missing argument for parameter 'string' in call
 86 |         let scripts = NSAttributedString.script(withSource: .init(source), target: .init(target))
 87 |
Foundation.NSMutableAttributedString.init:2:17: note: 'init(string:)' declared here
1 | class NSMutableAttributedString {
2 | override public init(string: String)}
  |                 `- note: 'init(string:)' declared here
3 |
/host/spi-builder-workspace/Sources/Sdifft/NSAttributedString+Diff.swift:122:58: error: missing argument for parameter 'string' in call
120 |         handler: ((DiffScript, NSAttributedString) -> NSAttributedString)? = nil
121 |     ) {
122 |         let attributedString = NSMutableAttributedString()
    |                                                          `- error: missing argument for parameter 'string' in call
123 |         let scripts = NSAttributedString.script(withSource: source, target: target)
124 |         scripts.forEach {
Foundation.NSMutableAttributedString.init:2:17: note: 'init(string:)' declared here
1 | class NSMutableAttributedString {
2 | override public init(string: String)}
  |                 `- note: 'init(string:)' declared here
3 |
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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
[2/4] Emitting module Sdifft
[3/4] Compiling Sdifft Diff.swift
[4/4] Compiling Sdifft NSAttributedString+Diff.swift
/host/spi-builder-workspace/Sources/Sdifft/NSAttributedString+Diff.swift:85:58: error: missing argument for parameter 'string' in call
 83 |
 84 |     public convenience init(source: String, target: String, attributes: DiffAttributes) {
 85 |         let attributedString = NSMutableAttributedString()
    |                                                          `- error: missing argument for parameter 'string' in call
 86 |         let scripts = NSAttributedString.script(withSource: .init(source), target: .init(target))
 87 |
Foundation.NSMutableAttributedString.init:2:17: note: 'init(string:)' declared here
1 | class NSMutableAttributedString {
2 | override public init(string: String)}
  |                 `- note: 'init(string:)' declared here
3 |
/host/spi-builder-workspace/Sources/Sdifft/NSAttributedString+Diff.swift:122:58: error: missing argument for parameter 'string' in call
120 |         handler: ((DiffScript, NSAttributedString) -> NSAttributedString)? = nil
121 |     ) {
122 |         let attributedString = NSMutableAttributedString()
    |                                                          `- error: missing argument for parameter 'string' in call
123 |         let scripts = NSAttributedString.script(withSource: source, target: target)
124 |         scripts.forEach {
Foundation.NSMutableAttributedString.init:2:17: note: 'init(string:)' declared here
1 | class NSMutableAttributedString {
2 | override public init(string: String)}
  |                 `- note: 'init(string:)' declared here
3 |
BUILD FAILURE 6.1 linux