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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 youtube-metadata-swift, reference main (d79b32), with Swift 6.0 (beta) for macOS (SPM) on 16 Sep 2024 09:45:59 UTC.

Swift 6 data race errors: 2

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
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Builder version: 4.53.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/ezefranca/youtube-metadata-swift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ezefranca/youtube-metadata-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at d79b32c Update README.md
Cloned https://github.com/ezefranca/youtube-metadata-swift.git
Revision (git rev-parse @):
d79b32cfcc1298809ef2605f6f20d622eba626f7
SUCCESS checkout https://github.com/ezefranca/youtube-metadata-swift.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/ezefranca/youtube-metadata-swift.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/7] Write sources
[2/7] Write ytmeta-entitlement.plist
[3/7] Write swift-version-117DEE11B69C53C9.txt
[5/9] Compiling YTMetadataRequesterLib YTMetadataRequester.swift
[6/9] Emitting module YTMetadataRequesterLib
[7/11] Compiling ytmeta main.swift
/Users/admin/builder/spi-builder-workspace/Sources/ytmeta/main.swift:40:44: warning: non-sendable type 'YTMetadataRequester.Metadata' returned by implicitly asynchronous call to nonisolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
38 | Task {
39 |     do {
40 |         let metadata = try await requester.getMetadata(for: videoURL)
   |                                            `- warning: non-sendable type 'YTMetadataRequester.Metadata' returned by implicitly asynchronous call to nonisolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
41 |         if let prettyMetadata = metadata.prettyPrinted() {
42 |             print(prettyMetadata)
/Users/admin/builder/spi-builder-workspace/Sources/YTMetadataRequesterLib/YTMetadataRequester.swift:7:19: note: struct 'Metadata' does not conform to the 'Sendable' protocol
 5 |
 6 |     /// A struct representing the metadata of a YouTube video.
 7 |     public struct Metadata: Codable {
   |                   `- note: struct 'Metadata' does not conform to the 'Sendable' protocol
 8 |         /// The name of the author of the video.
 9 |         public let authorName: String
/Users/admin/builder/spi-builder-workspace/Sources/ytmeta/main.swift:2:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'YTMetadataRequesterLib'
 1 | import Foundation
 2 | import YTMetadataRequesterLib
   | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'YTMetadataRequesterLib'
 3 |
 4 | func printHelp() {
/Users/admin/builder/spi-builder-workspace/Sources/ytmeta/main.swift:40:44: warning: sending 'requester' risks causing data races; this is an error in the Swift 6 language mode
38 | Task {
39 |     do {
40 |         let metadata = try await requester.getMetadata(for: videoURL)
   |                                            |- warning: sending 'requester' risks causing data races; this is an error in the Swift 6 language mode
   |                                            `- note: sending main actor-isolated 'requester' to nonisolated callee risks causing data races between nonisolated and main actor-isolated uses
41 |         if let prettyMetadata = metadata.prettyPrinted() {
42 |             print(prettyMetadata)
[8/11] Emitting module ytmeta
/Users/admin/builder/spi-builder-workspace/Sources/ytmeta/main.swift:40:44: warning: non-sendable type 'YTMetadataRequester.Metadata' returned by implicitly asynchronous call to nonisolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
38 | Task {
39 |     do {
40 |         let metadata = try await requester.getMetadata(for: videoURL)
   |                                            `- warning: non-sendable type 'YTMetadataRequester.Metadata' returned by implicitly asynchronous call to nonisolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
41 |         if let prettyMetadata = metadata.prettyPrinted() {
42 |             print(prettyMetadata)
/Users/admin/builder/spi-builder-workspace/Sources/YTMetadataRequesterLib/YTMetadataRequester.swift:7:19: note: struct 'Metadata' does not conform to the 'Sendable' protocol
 5 |
 6 |     /// A struct representing the metadata of a YouTube video.
 7 |     public struct Metadata: Codable {
   |                   `- note: struct 'Metadata' does not conform to the 'Sendable' protocol
 8 |         /// The name of the author of the video.
 9 |         public let authorName: String
/Users/admin/builder/spi-builder-workspace/Sources/ytmeta/main.swift:2:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'YTMetadataRequesterLib'
 1 | import Foundation
 2 | import YTMetadataRequesterLib
   | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'YTMetadataRequesterLib'
 3 |
 4 | func printHelp() {
/Users/admin/builder/spi-builder-workspace/Sources/ytmeta/main.swift:40:44: warning: sending 'requester' risks causing data races; this is an error in the Swift 6 language mode
38 | Task {
39 |     do {
40 |         let metadata = try await requester.getMetadata(for: videoURL)
   |                                            |- warning: sending 'requester' risks causing data races; this is an error in the Swift 6 language mode
   |                                            `- note: sending main actor-isolated 'requester' to nonisolated callee risks causing data races between nonisolated and main actor-isolated uses
41 |         if let prettyMetadata = metadata.prettyPrinted() {
42 |             print(prettyMetadata)
[8/11] Write Objects.LinkFileList
[9/11] Linking ytmeta
[10/11] Applying ytmeta
Build complete! (6.96s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "youtube-metadata-swift",
  "name" : "youtube-metadata-swift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "9.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "ytmeta",
      "targets" : [
        "ytmeta"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "YTMetadataRequesterLib",
      "targets" : [
        "YTMetadataRequesterLib"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ytmeta",
      "module_type" : "SwiftTarget",
      "name" : "ytmeta",
      "path" : "Sources/ytmeta",
      "product_memberships" : [
        "ytmeta"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "YTMetadataRequesterLib"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "YTMetadataRequesterTests",
      "module_type" : "SwiftTarget",
      "name" : "YTMetadataRequesterTests",
      "path" : "Tests/YTMetadataRequesterTests",
      "sources" : [
        "YTMetadataRequesterTests.swift"
      ],
      "target_dependencies" : [
        "YTMetadataRequesterLib"
      ],
      "type" : "test"
    },
    {
      "c99name" : "YTMetadataRequesterLib",
      "module_type" : "SwiftTarget",
      "name" : "YTMetadataRequesterLib",
      "path" : "Sources/YTMetadataRequesterLib",
      "product_memberships" : [
        "ytmeta",
        "YTMetadataRequesterLib"
      ],
      "sources" : [
        "YTMetadataRequester.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Done.