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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 SeeURL 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/shiroyagicorp/swift-seeurl.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/shiroyagicorp/swift-seeurl
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 88d12b5 Update for Swift 5.1 (#16)
Cloned https://github.com/shiroyagicorp/swift-seeurl.git
Revision (git rev-parse @):
88d12b53ece904aae22b7635d945b6fd611a0438
SUCCESS checkout https://github.com/shiroyagicorp/swift-seeurl.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/shiroyagicorp/swift-seeurl.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...
[0/3] Write sources
[1/3] Write swift-version-6F35C1178C84523A.txt
[2/3] Compiling CcURLSwift CcURL.c
[4/11] Compiling SeeURL cURLStringList.swift
[5/11] Compiling SeeURL cURL.swift
/Users/admin/builder/spi-builder-workspace/Sources/SeeURL/cURL.swift:20:16: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'cURLGlobal' may have shared mutable state; this is an error in the Swift 6 language mode
 16 | #endif
 17 |
 18 | fileprivate final class cURLGlobal {
    |                         `- note: class 'cURLGlobal' does not conform to the 'Sendable' protocol
 19 |
 20 |     static let shared = cURLGlobal()
    |                |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'cURLGlobal' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'shared' 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
 21 |
 22 |     private init() {
[6/11] Compiling SeeURL cURLError.swift
[7/11] Compiling SeeURL HTTPClient.swift
[8/11] Compiling SeeURL ResponseParser.swift
[9/11] Emitting module SeeURL
/Users/admin/builder/spi-builder-workspace/Sources/SeeURL/cURL.swift:20:16: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'cURLGlobal' may have shared mutable state; this is an error in the Swift 6 language mode
 16 | #endif
 17 |
 18 | fileprivate final class cURLGlobal {
    |                         `- note: class 'cURLGlobal' does not conform to the 'Sendable' protocol
 19 |
 20 |     static let shared = cURLGlobal()
    |                |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'cURLGlobal' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'shared' 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
 21 |
 22 |     private init() {
[10/11] Compiling SeeURL cURLWriteFunction.swift
[11/11] Compiling SeeURL cURLReadFunction.swift
Build complete! (18.81s)
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: you may be able to install curl using your system-packager:
    brew install curl
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SeeURL",
  "name" : "SeeURL",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SeeURL",
      "targets" : [
        "SeeURL"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SeeURLTests",
      "module_type" : "SwiftTarget",
      "name" : "SeeURLTests",
      "path" : "Tests/SeeURLTests",
      "sources" : [
        "HTTPClientTests.swift",
        "XCTestManifests.swift",
        "cURLTests.swift"
      ],
      "target_dependencies" : [
        "SeeURL"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SeeURL",
      "module_type" : "SwiftTarget",
      "name" : "SeeURL",
      "path" : "Sources/SeeURL",
      "product_memberships" : [
        "SeeURL"
      ],
      "sources" : [
        "HTTPClient.swift",
        "ResponseParser.swift",
        "cURL.swift",
        "cURLError.swift",
        "cURLReadFunction.swift",
        "cURLStringList.swift",
        "cURLWriteFunction.swift"
      ],
      "target_dependencies" : [
        "CcURLSwift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CcURLSwift",
      "module_type" : "ClangTarget",
      "name" : "CcURLSwift",
      "path" : "Sources/CcURLSwift",
      "product_memberships" : [
        "SeeURL"
      ],
      "sources" : [
        "CcURL.c"
      ],
      "target_dependencies" : [
        "CcURL"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CcURL",
      "module_type" : "SystemLibraryTarget",
      "name" : "CcURL",
      "path" : "Sources/CcURL",
      "product_memberships" : [
        "SeeURL"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "5.0"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.