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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 ConcurrencyPlus, reference main (daf69e), with Swift 6.1 for macOS (SPM) on 28 Apr 2025 01:44:28 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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ChimeHQ/ConcurrencyPlus.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ChimeHQ/ConcurrencyPlus
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at daf69ed Prepare for archiving
Cloned https://github.com/ChimeHQ/ConcurrencyPlus.git
Revision (git rev-parse @):
daf69ed837fa04d4ba666f5a99378cf1815f0dab
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ChimeHQ/ConcurrencyPlus.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": "concurrencyplus",
      "name": "ConcurrencyPlus",
      "url": "https://github.com/ChimeHQ/ConcurrencyPlus.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/ConcurrencyPlus",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/ChimeHQ/ConcurrencyPlus.git
[1/372] Fetching concurrencyplus
Fetched https://github.com/ChimeHQ/ConcurrencyPlus.git from cache (0.68s)
Creating working copy for https://github.com/ChimeHQ/ConcurrencyPlus.git
Working copy of https://github.com/ChimeHQ/ConcurrencyPlus.git resolved at main (daf69ed)
warning: '.resolve-product-dependencies': dependency 'concurrencyplus' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ChimeHQ/ConcurrencyPlus.git
https://github.com/ChimeHQ/ConcurrencyPlus.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ConcurrencyPlus",
  "name" : "ConcurrencyPlus",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "ConcurrencyPlus",
      "targets" : [
        "ConcurrencyPlus"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ConcurrencyPlusTests",
      "module_type" : "SwiftTarget",
      "name" : "ConcurrencyPlusTests",
      "path" : "Tests/ConcurrencyPlusTests",
      "sources" : [
        "CancellingContinuationTests.swift",
        "MainActorTests.swift",
        "SendableContainerTests.swift",
        "TaskQueueTests.swift",
        "TaskTests.swift"
      ],
      "target_dependencies" : [
        "ConcurrencyPlus"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ConcurrencyPlus",
      "module_type" : "SwiftTarget",
      "name" : "ConcurrencyPlus",
      "path" : "Sources/ConcurrencyPlus",
      "product_memberships" : [
        "ConcurrencyPlus"
      ],
      "sources" : [
        "Continuation+Resuming.swift",
        "MainActor+Unsafe.swift",
        "NSXPCConnection+Continuation.swift",
        "RelaxedDispatchQueue.swift",
        "SendableContainers.swift",
        "Task+Relay.swift",
        "TaskQueue.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
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...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/10] Compiling ConcurrencyPlus TaskQueue.swift
[4/10] Compiling ConcurrencyPlus Task+Relay.swift
[5/10] Compiling ConcurrencyPlus MainActor+Unsafe.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:21:25: warning: type 'T' does not conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
16 | #else
17 | 	@_unavailableFromAsync
18 | 	static func runUnsafely<T>(_ body: @MainActor () throws -> T) rethrows -> T {
   |                          `- note: consider making generic parameter 'T' conform to the 'Sendable' protocol
19 | #if swift(>=5.9)
20 | 		if #available(macOS 14.0, iOS 17.0, watchOS 10.0, tvOS 17.0, *) {
21 | 			return try MainActor.assumeIsolated(body)
   |                         `- warning: type 'T' does not conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
22 | 		}
23 | #endif
[6/10] Compiling ConcurrencyPlus NSXPCConnection+Continuation.swift
[7/10] Compiling ConcurrencyPlus SendableContainers.swift
[8/10] Emitting module ConcurrencyPlus
[9/10] Compiling ConcurrencyPlus RelaxedDispatchQueue.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:29:33: warning: passing non-sendable parameter 'block' to function expecting a @Sendable closure
22 |
23 | 	/// Identical semantics to `DispatchQueue.asyncUnsafe()`.
24 | 	public func async(_ block: @escaping () -> Void) {
   |                      `- note: parameter 'block' is implicitly non-sendable
25 | #if compiler(>=5.9)
26 | 		if #available(macOS 14.0, iOS 17.0, tvOS 17.0, watchOS 10.0, *) {
27 | 			internalQueue.asyncUnsafe(execute: block)
28 | 		} else {
29 | 			internalQueue.async(execute: block)
   |                                 `- warning: passing non-sendable parameter 'block' to function expecting a @Sendable closure
30 | 		}
31 | #else
[10/10] Compiling ConcurrencyPlus Continuation+Resuming.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConcurrencyPlus/Continuation+Resuming.swift:17:13: warning: sending 'value' risks causing data races; this is an error in the Swift 6 language mode
15 |         switch (value, error) {
16 |         case (let value?, nil):
17 |             resume(returning: value)
   |             |- warning: sending 'value' risks causing data races; this is an error in the Swift 6 language mode
   |             `- note: task-isolated 'value' is passed as a 'sending' parameter; Uses in callee may race with later task-isolated uses
18 |         case (_, let error?):
19 |             resume(throwing: error)
Build complete! (5.14s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ConcurrencyPlus",
  "name" : "ConcurrencyPlus",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "ConcurrencyPlus",
      "targets" : [
        "ConcurrencyPlus"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ConcurrencyPlusTests",
      "module_type" : "SwiftTarget",
      "name" : "ConcurrencyPlusTests",
      "path" : "Tests/ConcurrencyPlusTests",
      "sources" : [
        "CancellingContinuationTests.swift",
        "MainActorTests.swift",
        "SendableContainerTests.swift",
        "TaskQueueTests.swift",
        "TaskTests.swift"
      ],
      "target_dependencies" : [
        "ConcurrencyPlus"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ConcurrencyPlus",
      "module_type" : "SwiftTarget",
      "name" : "ConcurrencyPlus",
      "path" : "Sources/ConcurrencyPlus",
      "product_memberships" : [
        "ConcurrencyPlus"
      ],
      "sources" : [
        "Continuation+Resuming.swift",
        "MainActor+Unsafe.swift",
        "NSXPCConnection+Continuation.swift",
        "RelaxedDispatchQueue.swift",
        "SendableContainers.swift",
        "Task+Relay.swift",
        "TaskQueue.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
✅  Doc result (pending) reported
========================================
GenerateDocs
========================================
Generating docs at path:  $PWD/.docs/chimehq/concurrencyplus/main
Repository:               ChimeHQ/ConcurrencyPlus
Swift version used:       6.1
Target:                   ConcurrencyPlus
Extracting symbol information for 'ConcurrencyPlus'...
Finished extracting symbol information for 'ConcurrencyPlus'. (2.41s)
Building documentation for 'ConcurrencyPlus'...
Finished building documentation for 'ConcurrencyPlus' (0.11s)
Generated documentation archive at:
  /Users/admin/builder/spi-builder-workspace/.docs/chimehq/concurrencyplus/main
Fetching https://github.com/swiftlang/swift-docc-plugin from cache
Fetched https://github.com/swiftlang/swift-docc-plugin from cache (0.46s)
Computing version for https://github.com/swiftlang/swift-docc-plugin
Computed https://github.com/swiftlang/swift-docc-plugin at 1.4.3 (1.03s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit from cache
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.79s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.42s)
Creating working copy for https://github.com/swiftlang/swift-docc-plugin
Working copy of https://github.com/swiftlang/swift-docc-plugin resolved at 1.4.3
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Building for debugging...
[0/8] Write sources
[1/8] Write snippet-extract-tool-entitlement.plist
[2/8] Write sources
[4/8] Write swift-version-2F0A5646E1D333AE.txt
[6/53] Compiling Snippets SnippetParser.swift
[7/53] Emitting module SymbolKit
[8/57] Compiling SymbolKit Names.swift
[9/57] Compiling SymbolKit SPI.swift
[10/57] Compiling SymbolKit Snippet.swift
[11/57] Compiling SymbolKit Extension.swift
[12/57] Compiling Snippets Snippet.swift
[13/57] Emitting module Snippets
[14/57] Compiling SymbolKit SemanticVersion.swift
[15/57] Compiling SymbolKit AccessControl.swift
[16/57] Compiling SymbolKit Availability.swift
[17/57] Compiling SymbolKit AvailabilityItem.swift
[18/57] Compiling SymbolKit Domain.swift
[19/57] Compiling SymbolKit Mixin+Equals.swift
[20/57] Compiling SymbolKit Mixin+Hash.swift
[21/57] Compiling SymbolKit Mixin.swift
[22/57] Compiling SymbolKit LineList.swift
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[27/57] Compiling SymbolKit Mutability.swift
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[33/57] Compiling SymbolKit Symbol.swift
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[36/57] Compiling SymbolKit GraphCollector.swift
[37/57] Compiling SymbolKit GenericConstraint.swift
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[39/57] Compiling SymbolKit Generics.swift
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[44/57] Compiling SymbolKit OperatingSystem.swift
[45/57] Compiling SymbolKit Platform.swift
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[54/57] Compiling SymbolKit UnifiedSymbolGraph.swift
[55/61] Compiling snippet_extract URL+Status.swift
[56/61] Compiling snippet_extract SymbolGraph+Snippet.swift
[57/61] Emitting module snippet_extract
[58/61] Compiling snippet_extract SnippetBuildCommand.swift
[58/61] Write Objects.LinkFileList
[59/61] Linking snippet-extract-tool
[60/61] Applying snippet-extract-tool
Build of product 'snippet-extract' complete! (4.13s)
Building for debugging...
[0/1] Write swift-version-2F0A5646E1D333AE.txt
[2/9] Emitting module ConcurrencyPlus
[3/9] Compiling ConcurrencyPlus Continuation+Resuming.swift
[4/9] Compiling ConcurrencyPlus Task+Relay.swift
[5/9] Compiling ConcurrencyPlus RelaxedDispatchQueue.swift
[6/9] Compiling ConcurrencyPlus MainActor+Unsafe.swift
[7/9] Compiling ConcurrencyPlus NSXPCConnection+Continuation.swift
[8/9] Compiling ConcurrencyPlus SendableContainers.swift
[9/9] Compiling ConcurrencyPlus TaskQueue.swift
Build of target: 'ConcurrencyPlus' complete! (0.64s)
     146
2	/Users/admin/builder/spi-builder-workspace/.docs/chimehq/concurrencyplus/main
✅  Doc result (uploading) reported
========================================
SyncDocs
========================================
Doc archive source directory: $PWD/.docs/chimehq/concurrencyplus/main
File count: 146
Doc size:   2.0MB
Preparing doc bundle ...
Uploading prod-chimehq-concurrencyplus-main-7a08dc4e.zip to s3://spi-docs-inbox/prod-chimehq-concurrencyplus-main-7a08dc4e.zip
Copying... [15%]
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Copying... [46%]
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Done.