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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 MCP4725, reference master (a5f110), with Swift 6.0 for macOS (SPM) on 4 Nov 2024 01:45:49 UTC.

Swift 6 data race errors: 2

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Kaiede/MCP4725.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Kaiede/MCP4725
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at a5f1104 Enable GitHub Actions (#1)
Cloned https://github.com/Kaiede/MCP4725.git
Revision (git rev-parse @):
a5f1104bf404a765be61679e2e1fca7351f81d03
SUCCESS checkout https://github.com/Kaiede/MCP4725.git at master
Fetching https://github.com/Kaiede/SingleBoard.git
[3/277] Fetching singleboard
Fetched https://github.com/Kaiede/SingleBoard.git from cache (0.76s)
Computing version for https://github.com/Kaiede/SingleBoard.git
Computed https://github.com/Kaiede/SingleBoard.git at 1.0.0 (0.70s)
Creating working copy for https://github.com/Kaiede/SingleBoard.git
Working copy of https://github.com/Kaiede/SingleBoard.git resolved at 1.0.0
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "mcp4725",
      "name": "MCP4725",
      "url": "https://github.com/Kaiede/MCP4725.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/MCP4725",
      "dependencies": [
        {
          "identity": "singleboard",
          "name": "SingleBoard",
          "url": "https://github.com/Kaiede/SingleBoard.git",
          "version": "1.0.0",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SingleBoard",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/Kaiede/MCP4725.git
[1/28] Fetching mcp4725
Fetched https://github.com/Kaiede/MCP4725.git from cache (0.61s)
Fetching https://github.com/Kaiede/SingleBoard.git from cache
Fetched https://github.com/Kaiede/SingleBoard.git from cache (0.49s)
Computing version for https://github.com/Kaiede/SingleBoard.git
Computed https://github.com/Kaiede/SingleBoard.git at 1.0.0 (0.03s)
Creating working copy for https://github.com/Kaiede/SingleBoard.git
Working copy of https://github.com/Kaiede/SingleBoard.git resolved at 1.0.0
Creating working copy for https://github.com/Kaiede/MCP4725.git
Working copy of https://github.com/Kaiede/MCP4725.git resolved at master (a5f1104)
warning: '.resolve-product-dependencies': dependency 'mcp4725' is not used by any target
Found 1 product dependencies
  - SingleBoard
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/Kaiede/MCP4725.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun 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
[2/3] Write swift-version--7754E27361AE5C74.txt
[4/13] Compiling SingleBoard Raspberry_PWM.swift
[5/13] Compiling SingleBoard Raspberry_Board.swift
[6/13] Compiling SingleBoard Pine_Board.swift
[7/13] Emitting module SingleBoard
[8/13] Compiling SingleBoard GPIO.swift
[9/13] Compiling SingleBoard Chip_Board.swift
[10/13] Compiling SingleBoard Extensions.swift
[11/13] Compiling SingleBoard Raspberry_Registers.swift
[12/13] Compiling SingleBoard SingleBoard.swift
[13/13] Compiling SingleBoard I2C.swift
[14/15] Compiling MCP4725 MCP4725.swift
/Users/admin/builder/spi-builder-workspace/Sources/MCP4725.swift:48:20: warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 46 |
 47 |     internal struct FastModeData: I2CWritable {
 48 |         static var dataLength: Int = MemoryLayout<UInt16>.size
    |                    |- warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'dataLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'dataLength' 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
 49 |         var mode: PowerDownMode
 50 |         var voltage: UInt16
/Users/admin/builder/spi-builder-workspace/Sources/MCP4725.swift:71:20: warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 69 |
 70 |     internal struct FullData: I2CReadWritable {
 71 |         static var dataLength: Int = MemoryLayout<UInt8>.size * 3
    |                    |- warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'dataLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'dataLength' 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 |         var command: WriteCommand
[15/15] Emitting module MCP4725
/Users/admin/builder/spi-builder-workspace/Sources/MCP4725.swift:48:20: warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 46 |
 47 |     internal struct FastModeData: I2CWritable {
 48 |         static var dataLength: Int = MemoryLayout<UInt16>.size
    |                    |- warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'dataLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'dataLength' 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
 49 |         var mode: PowerDownMode
 50 |         var voltage: UInt16
/Users/admin/builder/spi-builder-workspace/Sources/MCP4725.swift:71:20: warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 69 |
 70 |     internal struct FullData: I2CReadWritable {
 71 |         static var dataLength: Int = MemoryLayout<UInt8>.size * 3
    |                    |- warning: static property 'dataLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'dataLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'dataLength' 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 |         var command: WriteCommand
Build complete! (13.14s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "singleboard",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Kaiede/SingleBoard.git"
    }
  ],
  "manifest_display_name" : "MCP4725",
  "name" : "MCP4725",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MCP4725",
      "targets" : [
        "MCP4725"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MCP4725",
      "module_type" : "SwiftTarget",
      "name" : "MCP4725",
      "path" : "Sources",
      "product_dependencies" : [
        "SingleBoard"
      ],
      "product_memberships" : [
        "MCP4725"
      ],
      "sources" : [
        "MCP4725.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Done.