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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

Successful build of swift-figlet, reference main (166eef), with Swift 6.0 for Linux on 30 Nov 2024 05:54:39 UTC.

Swift 6 data race errors: 1

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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

Build Log

========================================
RunAll
========================================
Builder version: 4.58.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/apple/example-package-figlet.git
Reference: main
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/apple/example-package-figlet
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 166eef4 initial commit
Cloned https://github.com/apple/example-package-figlet.git
Revision (git rev-parse @):
166eef46de0b094d6d1966e749f727d6c4beba0e
SUCCESS checkout https://github.com/apple/example-package-figlet.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/apple/example-package-figlet.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$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: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Building for debugging...
[0/3] Write sources
[1/3] Copying standard.flf
[2/3] Write swift-version-24593BA9C3E375BF.txt
[4/8] Compiling Figlet Font.swift
/host/spi-builder-workspace/Sources/Figlet/Font.swift:96:27: warning: static property 'EmptyChar' is not concurrency-safe because non-'Sendable' type 'Figlet.Char' may have shared mutable state; this is an error in the Swift 6 language mode
 92 |
 93 | extension Figlet {
 94 |     public struct Char {
    |                   `- note: consider making struct 'Char' conform to the 'Sendable' protocol
 95 |         /// Represents an empty Character
 96 |         public static let EmptyChar = Self(charLines: [])
    |                           |- warning: static property 'EmptyChar' is not concurrency-safe because non-'Sendable' type 'Figlet.Char' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'EmptyChar' with '@MainActor' if property should only be accessed from the main actor
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 97 |
 98 |         /// height in lines of this Character
[5/8] Compiling Figlet resource_bundle_accessor.swift
[6/8] Emitting module Figlet
/host/spi-builder-workspace/Sources/Figlet/Font.swift:96:27: warning: static property 'EmptyChar' is not concurrency-safe because non-'Sendable' type 'Figlet.Char' may have shared mutable state; this is an error in the Swift 6 language mode
 92 |
 93 | extension Figlet {
 94 |     public struct Char {
    |                   `- note: consider making struct 'Char' conform to the 'Sendable' protocol
 95 |         /// Represents an empty Character
 96 |         public static let EmptyChar = Self(charLines: [])
    |                           |- warning: static property 'EmptyChar' is not concurrency-safe because non-'Sendable' type 'Figlet.Char' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'EmptyChar' with '@MainActor' if property should only be accessed from the main actor
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 97 |
 98 |         /// height in lines of this Character
[7/8] Compiling Figlet Figlet.swift
[8/8] Compiling Figlet FigletFile.swift
Build complete! (14.14s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swift-figlet",
  "name" : "swift-figlet",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Figlet",
      "targets" : [
        "Figlet"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FigletTests",
      "module_type" : "SwiftTarget",
      "name" : "FigletTests",
      "path" : "Tests/FigletTests",
      "sources" : [
        "FigletTests.swift"
      ],
      "target_dependencies" : [
        "Figlet"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Figlet",
      "module_type" : "SwiftTarget",
      "name" : "Figlet",
      "path" : "Sources/Figlet",
      "product_memberships" : [
        "Figlet"
      ],
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Sources/Figlet/standard.flf",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Figlet.swift",
        "FigletFile.swift",
        "Font.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Done.