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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 CombineMIDI, reference main (c044ae), with Swift 6.0 for macOS (SPM) on 2 Nov 2024 05:11:04 UTC.

Swift 6 data race errors: 1

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/mkj-is/CombineMIDI.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mkj-is/CombineMIDI
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at c044ae3 Release version 0.3.0 and update README examples
Cloned https://github.com/mkj-is/CombineMIDI.git
Revision (git rev-parse @):
c044ae3f65f14f27b2842908ef3eb550e2782bff
SUCCESS checkout https://github.com/mkj-is/CombineMIDI.git at main
========================================
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": "combinemidi",
      "name": "CombineMIDI",
      "url": "https://github.com/mkj-is/CombineMIDI.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/CombineMIDI",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/mkj-is/CombineMIDI.git
[1/224] Fetching combinemidi
Fetched https://github.com/mkj-is/CombineMIDI.git from cache (0.69s)
Creating working copy for https://github.com/mkj-is/CombineMIDI.git
Working copy of https://github.com/mkj-is/CombineMIDI.git resolved at main (c044ae3)
warning: '.resolve-product-dependencies': dependency 'combinemidi' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/mkj-is/CombineMIDI.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...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/9] Compiling CombineMIDI MIDIStream.swift
[4/9] Compiling CombineMIDI MIDIMessage.swift
/Users/admin/builder/spi-builder-workspace/Sources/CombineMIDI/MIDIMessage.swift:128:16: warning: static property 'allNotesOff' is not concurrency-safe because non-'Sendable' type 'MIDIMessage' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | /// Typed MIDI message interpretation.
  2 | public struct MIDIMessage {
    |               `- note: consider making struct 'MIDIMessage' conform to the 'Sendable' protocol
  3 |     /// Kind of the message.
  4 |     public enum Status: UInt8 {
    :
126 |
127 |     /// All Notes Off. When an All Notes Off is received, all oscillators will turn off.
128 |     static let allNotesOff: MIDIMessage = MIDIMessage(status: .controlChange, channel: 0, data1: 123, data2: 0)
    |                |- warning: static property 'allNotesOff' is not concurrency-safe because non-'Sendable' type 'MIDIMessage' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'allNotesOff' 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
129 |
130 |     /// Initializes new message manually with all the parameters.
[5/9] Compiling CombineMIDI MIDIPublisher.swift
[6/9] Compiling CombineMIDI MIDISubscription.swift
[7/9] Compiling CombineMIDI MIDIClient.swift
/Users/admin/builder/spi-builder-workspace/Sources/CombineMIDI/MIDIClient.swift:32:30: warning: sending 'message' risks causing data races; this is an error in the Swift 6 language mode
30 |         AsyncStream { continuation in
31 |             let stream = MIDIStream(client: self) { message in
32 |                 continuation.yield(message)
   |                              |- warning: sending 'message' risks causing data races; this is an error in the Swift 6 language mode
   |                              `- note: task-isolated 'message' is passed as a 'sending' parameter; Uses in callee may race with later task-isolated uses
33 |             }
34 |             continuation.onTermination = { @Sendable _ in
[8/9] Compiling CombineMIDI MIDI.swift
/Users/admin/builder/spi-builder-workspace/Sources/CombineMIDI/MIDIMessage.swift:128:16: warning: static property 'allNotesOff' is not concurrency-safe because non-'Sendable' type 'MIDIMessage' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | /// Typed MIDI message interpretation.
  2 | public struct MIDIMessage {
    |               `- note: consider making struct 'MIDIMessage' conform to the 'Sendable' protocol
  3 |     /// Kind of the message.
  4 |     public enum Status: UInt8 {
    :
126 |
127 |     /// All Notes Off. When an All Notes Off is received, all oscillators will turn off.
128 |     static let allNotesOff: MIDIMessage = MIDIMessage(status: .controlChange, channel: 0, data1: 123, data2: 0)
    |                |- warning: static property 'allNotesOff' is not concurrency-safe because non-'Sendable' type 'MIDIMessage' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'allNotesOff' 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
129 |
130 |     /// Initializes new message manually with all the parameters.
[9/9] Emitting module CombineMIDI
/Users/admin/builder/spi-builder-workspace/Sources/CombineMIDI/MIDIMessage.swift:128:16: warning: static property 'allNotesOff' is not concurrency-safe because non-'Sendable' type 'MIDIMessage' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | /// Typed MIDI message interpretation.
  2 | public struct MIDIMessage {
    |               `- note: consider making struct 'MIDIMessage' conform to the 'Sendable' protocol
  3 |     /// Kind of the message.
  4 |     public enum Status: UInt8 {
    :
126 |
127 |     /// All Notes Off. When an All Notes Off is received, all oscillators will turn off.
128 |     static let allNotesOff: MIDIMessage = MIDIMessage(status: .controlChange, channel: 0, data1: 123, data2: 0)
    |                |- warning: static property 'allNotesOff' is not concurrency-safe because non-'Sendable' type 'MIDIMessage' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'allNotesOff' 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
129 |
130 |     /// Initializes new message manually with all the parameters.
Build complete! (12.63s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CombineMIDI",
  "name" : "CombineMIDI",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CombineMIDI",
      "targets" : [
        "CombineMIDI"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CombineMIDITests",
      "module_type" : "SwiftTarget",
      "name" : "CombineMIDITests",
      "path" : "Tests/CombineMIDITests",
      "sources" : [
        "MemoryTests.swift"
      ],
      "target_dependencies" : [
        "CombineMIDI"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CombineMIDI",
      "module_type" : "SwiftTarget",
      "name" : "CombineMIDI",
      "path" : "Sources/CombineMIDI",
      "product_memberships" : [
        "CombineMIDI"
      ],
      "sources" : [
        "MIDI.swift",
        "MIDIClient.swift",
        "MIDIMessage.swift",
        "MIDIPublisher.swift",
        "MIDIStream.swift",
        "MIDISubscription.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
Done.