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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 Restore with Swift 6.0 for Linux.

Swift 6 data race errors: 1

Build Command

bash -c docker run --rm -v "checkouts-4606859-1":/host -w "$workDir" 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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/jordanbaird/Restore.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/jordanbaird/Restore
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at d502e06 Update file headers
Cloned https://github.com/jordanbaird/Restore.git
Revision (git rev-parse @):
d502e06bd7b4d74af1b1bfaedb06b926b9bee748
SUCCESS checkout https://github.com/jordanbaird/Restore.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $workDir
https://github.com/jordanbaird/Restore.git
Running build ...
bash -c docker run --rm -v "checkouts-4606859-1":/host -w "$workDir" 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 2>&1
Fetching https://github.com/apple/swift-docc-plugin
[1/1465] Fetching swift-docc-plugin
Fetched https://github.com/apple/swift-docc-plugin from cache (0.33s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.3.0 (0.45s)
Fetching https://github.com/apple/swift-docc-symbolkit
[1/2861] Fetching swift-docc-symbolkit
Fetched https://github.com/apple/swift-docc-symbolkit from cache (0.34s)
Computing version for https://github.com/apple/swift-docc-symbolkit
Computed https://github.com/apple/swift-docc-symbolkit at 1.0.0 (1.24s)
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.3.0
Creating working copy for https://github.com/apple/swift-docc-symbolkit
Working copy of https://github.com/apple/swift-docc-symbolkit resolved at 1.0.0
/host/spi-builder-workspace/.build/checkouts/swift-docc-plugin/Plugins/Swift-DocC Convert/Symbolic Links/SharedPackagePluginExtensions/PackageExtensions.swift:31:17: warning: switch covers known cases, but 'TargetDependency' may have additional unknown values; this is an error in the Swift 6 language mode
 29 |         func addTargetDependencies(_ target: Target) {
 30 |             for dependency in target.dependencies {
 31 |                 switch dependency {
    |                 |- warning: switch covers known cases, but 'TargetDependency' may have additional unknown values; this is an error in the Swift 6 language mode
    |                 `- note: handle unknown values using "@unknown default"
 32 |                 case .product(let product):
 33 |                     addTargets(product.targets)
[1/1] Compiling plugin Swift-DocC
/host/spi-builder-workspace/.build/checkouts/swift-docc-plugin/Plugins/Swift-DocC Preview/Symbolic Links/SharedPackagePluginExtensions/PackageExtensions.swift:31:17: warning: switch covers known cases, but 'TargetDependency' may have additional unknown values; this is an error in the Swift 6 language mode
 29 |         func addTargetDependencies(_ target: Target) {
 30 |             for dependency in target.dependencies {
 31 |                 switch dependency {
    |                 |- warning: switch covers known cases, but 'TargetDependency' may have additional unknown values; this is an error in the Swift 6 language mode
    |                 `- note: handle unknown values using "@unknown default"
 32 |                 case .product(let product):
 33 |                     addTargets(product.targets)
[2/2] Compiling plugin Swift-DocC Preview
Building for debugging...
[2/4] Write sources
[3/4] Write swift-version-24593BA9C3E375BF.txt
[5/13] Emitting module Restore
/host/spi-builder-workspace/Sources/Restore/RestorableObject.swift:6:5: warning: var 'storage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
  4 | //
  5 |
  6 | var storage = [Identifier: [RestorationKey: AnySnapshot]]()
    |     |- warning: var 'storage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'storage' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: annotate 'storage' 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
  7 |
  8 | /// A type that can be stored and restored from a snapshot.
[6/14] Compiling Restore Properties.swift
[7/14] Compiling Restore RestorationKey.swift
[8/14] Compiling Restore Snapshot.swift
[9/14] Compiling Restore Reference.swift
[10/14] Compiling Restore Restorable.swift
[11/14] Compiling Restore ErrorHandling.swift
[12/14] Compiling Restore Identity.swift
[13/14] Compiling Restore RestorableObject.swift
/host/spi-builder-workspace/Sources/Restore/RestorableObject.swift:6:5: warning: var 'storage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
  4 | //
  5 |
  6 | var storage = [Identifier: [RestorationKey: AnySnapshot]]()
    |     |- warning: var 'storage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'storage' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: annotate 'storage' 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
  7 |
  8 | /// A type that can be stored and restored from a snapshot.
[14/14] Compiling Restore Utilities.swift
Build complete! (34.00s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "Restore",
  "name" : "Restore",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Restore",
      "targets" : [
        "Restore"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RestoreTests",
      "module_type" : "SwiftTarget",
      "name" : "RestoreTests",
      "path" : "Tests/RestoreTests",
      "sources" : [
        "PropertiesTests.swift",
        "RestorableTests.swift"
      ],
      "target_dependencies" : [
        "Restore"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Restore",
      "module_type" : "SwiftTarget",
      "name" : "Restore",
      "path" : "Sources/Restore",
      "product_memberships" : [
        "Restore"
      ],
      "sources" : [
        "ErrorHandling.swift",
        "Identity.swift",
        "Properties.swift",
        "Reference.swift",
        "Restorable.swift",
        "RestorableObject.swift",
        "RestorationKey.swift",
        "Snapshot.swift",
        "Utilities.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.