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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 Zip with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/marmelroy/Zip.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/marmelroy/Zip
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at bca30f6 Merge pull request #252 from Stannieman/bugfix/Fix_issue_245_path_traversal_vulnerability
Cloned https://github.com/marmelroy/Zip.git
Revision (git rev-parse @):
bca30f6d6c7d37cbc4aa8f6b0002e281dcc36195
SUCCESS checkout https://github.com/marmelroy/Zip.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/marmelroy/Zip.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/5] Write sources
[1/5] Write swift-version-6F35C1178C84523A.txt
[2/5] Compiling Minizip zip.c
[3/5] Compiling Minizip ioapi.c
[4/5] Compiling Minizip unzip.c
[6/9] Emitting module Zip
/Users/admin/builder/spi-builder-workspace/Zip/Zip.swift:71:25: warning: static property 'customFileExtensions' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 69 |      Set of vaild file extensions
 70 |      */
 71 |     internal static var customFileExtensions: Set<String> = []
    |                         |- warning: static property 'customFileExtensions' 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 'customFileExtensions' to a 'let' constant to make 'Sendable' shared state immutable
    |                         |- note: annotate 'customFileExtensions' 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
 72 |
 73 |     // MARK: Lifecycle
[7/9] Compiling Zip QuickZip.swift
[8/9] Compiling Zip Zip.swift
/Users/admin/builder/spi-builder-workspace/Zip/Zip.swift:71:25: warning: static property 'customFileExtensions' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 69 |      Set of vaild file extensions
 70 |      */
 71 |     internal static var customFileExtensions: Set<String> = []
    |                         |- warning: static property 'customFileExtensions' 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 'customFileExtensions' to a 'let' constant to make 'Sendable' shared state immutable
    |                         |- note: annotate 'customFileExtensions' 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
 72 |
 73 |     // MARK: Lifecycle
[9/9] Compiling Zip ZipUtilities.swift
Build complete! (17.66s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Zip",
  "name" : "Zip",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Zip",
      "targets" : [
        "Zip"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ZipTests",
      "module_type" : "SwiftTarget",
      "name" : "ZipTests",
      "path" : "ZipTests",
      "sources" : [
        "XCTestManifests.swift",
        "ZipTests.swift"
      ],
      "target_dependencies" : [
        "Zip"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Zip",
      "module_type" : "SwiftTarget",
      "name" : "Zip",
      "path" : "Zip",
      "product_memberships" : [
        "Zip"
      ],
      "sources" : [
        "QuickZip.swift",
        "Zip.swift",
        "ZipUtilities.swift"
      ],
      "target_dependencies" : [
        "Minizip"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Minizip",
      "module_type" : "ClangTarget",
      "name" : "Minizip",
      "path" : "Zip/minizip",
      "product_memberships" : [
        "Zip"
      ],
      "sources" : [
        "ioapi.c",
        "unzip.c",
        "zip.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.