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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 SwiftDataPreviewer, reference main (99e4ac), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 14:53:21 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/markbattistella/SwiftDataPreviewer.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/markbattistella/SwiftDataPreviewer
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 99e4ac7 Update README.md
Cloned https://github.com/markbattistella/SwiftDataPreviewer.git
Revision (git rev-parse @):
99e4ac7d9b633e1d93016f20b93eec09eda06d38
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/markbattistella/SwiftDataPreviewer.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/markbattistella/SwiftDataPreviewer.git
https://github.com/markbattistella/SwiftDataPreviewer.git
{
  "dependencies" : [
    {
      "identity" : "simplelogger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/markbattistella/SimpleLogger"
    }
  ],
  "manifest_display_name" : "SwiftDataPreviewer",
  "name" : "SwiftDataPreviewer",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    },
    {
      "name" : "tvos",
      "version" : "17.0"
    },
    {
      "name" : "watchos",
      "version" : "10.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "17.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftDataPreviewer",
      "targets" : [
        "SwiftDataPreviewer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftDataPreviewer",
      "module_type" : "SwiftTarget",
      "name" : "SwiftDataPreviewer",
      "path" : "Sources/SwiftDataPreviewer",
      "product_dependencies" : [
        "SimpleLogger"
      ],
      "product_memberships" : [
        "SwiftDataPreviewer"
      ],
      "sources" : [
        "PreviewContainer.swift",
        "SwiftDataPreviewer.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/20] Compiling SimpleLogger Delimiter.swift
[5/21] Compiling SimpleLogger Category+System.swift
[6/21] Compiling SimpleLogger Category+Testing.swift
[7/21] Emitting module SimpleLogger
[8/21] Compiling SimpleLogger Category+Persistence.swift
[9/21] Compiling SimpleLogger Category+Security.swift
[10/21] Compiling SimpleLogger Category+Architecture.swift
[11/21] Compiling SimpleLogger Category+Miscellaneous.swift
[12/21] Compiling SimpleLogger Category+Network.swift
[13/21] Compiling SimpleLogger Category+Performance.swift
[14/21] Compiling SimpleLogger LoggerManager.swift
[15/21] Compiling SimpleLogger Logger+Ext.swift
[16/21] Compiling SimpleLogger AgnosticColor.swift
[17/21] Compiling SimpleLogger Category+UI.swift
[18/21] Compiling SimpleLogger Category+Utilities.swift
[19/21] Compiling SimpleLogger LoggerCategory.swift
[20/21] Compiling SimpleLogger Date+Ext.swift
[21/21] Compiling SimpleLogger LogLevel+Ext.swift
[22/24] Compiling SwiftDataPreviewer SwiftDataPreviewer.swift
[23/24] Emitting module SwiftDataPreviewer
[24/24] Compiling SwiftDataPreviewer PreviewContainer.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftDataPreviewer/PreviewContainer.swift:61:13: warning: sending 'items' risks causing data races; this is an error in the Swift 6 language mode
59 |     internal func add(items: [any PersistentModel]) {
60 |         Task { @MainActor in
61 |             items.forEach { item in
   |             |- warning: sending 'items' risks causing data races; this is an error in the Swift 6 language mode
   |             `- note: task-isolated 'items' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
62 |                 container.mainContext.insert(item)
63 |             }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftDataPreviewer/PreviewContainer.swift:62:17: warning: sending 'self' risks causing data races; this is an error in the Swift 6 language mode
60 |         Task { @MainActor in
61 |             items.forEach { item in
62 |                 container.mainContext.insert(item)
   |                 |- warning: sending 'self' risks causing data races; this is an error in the Swift 6 language mode
   |                 `- note: task-isolated 'self' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
63 |             }
64 |         }
Build complete! (15.03s)
Fetching https://github.com/markbattistella/SimpleLogger
[1/97] Fetching simplelogger
Fetched https://github.com/markbattistella/SimpleLogger from cache (0.61s)
Computing version for https://github.com/markbattistella/SimpleLogger
Computed https://github.com/markbattistella/SimpleLogger at 1.2.0 (1.10s)
Creating working copy for https://github.com/markbattistella/SimpleLogger
Working copy of https://github.com/markbattistella/SimpleLogger resolved at 1.2.0
Build complete.
{
  "dependencies" : [
    {
      "identity" : "simplelogger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/markbattistella/SimpleLogger"
    }
  ],
  "manifest_display_name" : "SwiftDataPreviewer",
  "name" : "SwiftDataPreviewer",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    },
    {
      "name" : "tvos",
      "version" : "17.0"
    },
    {
      "name" : "watchos",
      "version" : "10.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "17.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftDataPreviewer",
      "targets" : [
        "SwiftDataPreviewer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftDataPreviewer",
      "module_type" : "SwiftTarget",
      "name" : "SwiftDataPreviewer",
      "path" : "Sources/SwiftDataPreviewer",
      "product_dependencies" : [
        "SimpleLogger"
      ],
      "product_memberships" : [
        "SwiftDataPreviewer"
      ],
      "sources" : [
        "PreviewContainer.swift",
        "SwiftDataPreviewer.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Done.