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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 Float16, reference main (65ba01), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 19:22:16 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/SusanDoggie/Float16.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/SusanDoggie/Float16
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 65ba010 update
Cloned https://github.com/SusanDoggie/Float16.git
Revision (git rev-parse @):
65ba0108c67190c1624b54e9d4d79dfb658f43a7
SUCCESS checkout https://github.com/SusanDoggie/Float16.git at main
Fetching https://github.com/apple/swift-numerics from cache
Fetched https://github.com/apple/swift-numerics from cache (0.44s)
Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.0.3 (1.06s)
Creating working copy for https://github.com/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.0.3
========================================
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": "float16",
      "name": "Float16",
      "url": "https://github.com/SusanDoggie/Float16.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Float16",
      "dependencies": [
        {
          "identity": "swift-numerics",
          "name": "swift-numerics",
          "url": "https://github.com/apple/swift-numerics",
          "version": "1.0.3",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-numerics",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/SusanDoggie/Float16.git
[7/310] Fetching float16
Fetched https://github.com/SusanDoggie/Float16.git from cache (0.74s)
Fetching https://github.com/apple/swift-numerics from cache
Fetched https://github.com/apple/swift-numerics from cache (0.46s)
Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.0.3 (0.52s)
Creating working copy for https://github.com/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.0.3
Creating working copy for https://github.com/SusanDoggie/Float16.git
Working copy of https://github.com/SusanDoggie/Float16.git resolved at main (65ba010)
warning: '.resolve-product-dependencies': dependency 'float16' is not used by any target
Found 1 product dependencies
  - swift-numerics
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/SusanDoggie/Float16.git
https://github.com/SusanDoggie/Float16.git
{
  "dependencies" : [
    {
      "identity" : "swift-numerics",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-numerics"
    }
  ],
  "manifest_display_name" : "Float16",
  "name" : "Float16",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Float16",
      "targets" : [
        "Float16"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Float16Tests",
      "module_type" : "SwiftTarget",
      "name" : "Float16Tests",
      "path" : "Tests/Float16Tests",
      "sources" : [
        "Float16Test.swift"
      ],
      "target_dependencies" : [
        "Float16"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Float16",
      "module_type" : "SwiftTarget",
      "name" : "Float16",
      "path" : "Sources/Float16",
      "product_dependencies" : [
        "RealModule"
      ],
      "product_memberships" : [
        "Float16"
      ],
      "sources" : [
        "Concurrency.swift",
        "Real.swift",
        "float16.swift"
      ],
      "target_dependencies" : [
        "CFloat16"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CFloat16",
      "module_type" : "ClangTarget",
      "name" : "CFloat16",
      "path" : "Sources/CFloat16",
      "product_memberships" : [
        "Float16"
      ],
      "sources" : [
        "float16.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
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...
[0/5] Write sources
[2/5] Compiling _NumericsShims _NumericsShims.c
[3/5] Write swift-version-2F0A5646E1D333AE.txt
[4/5] Compiling CFloat16 float16.c
[6/15] Compiling RealModule Float80+Real.swift
[7/15] Compiling RealModule ElementaryFunctions.swift
[8/15] Compiling RealModule Real.swift
[9/15] Compiling RealModule AlgebraicField.swift
[10/15] Compiling RealModule AugmentedArithmetic.swift
[11/15] Compiling RealModule Float+Real.swift
[12/15] Compiling RealModule Float16+Real.swift
[13/15] Emitting module RealModule
[14/15] Compiling RealModule Double+Real.swift
[15/15] Compiling RealModule ApproximateEquality.swift
[16/16] Compiling RealModule RealFunctions.swift
[17/20] Compiling Float16 Real.swift
/Users/admin/builder/spi-builder-workspace/Sources/Float16/Real.swift:28:1: warning: extension declares a conformance of imported type 'float16' to imported protocols 'Real', 'AlgebraicField', 'SignedNumeric', 'Numeric', 'ExpressibleByIntegerLiteral', 'AdditiveArithmetic', 'RealFunctions', 'ElementaryFunctions', 'FloatingPoint', 'Strideable', 'Comparable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
 26 | import RealModule
 27 |
 28 | extension float16: Real {
    | |- warning: extension declares a conformance of imported type 'float16' to imported protocols 'Real', 'AlgebraicField', 'SignedNumeric', 'Numeric', 'ExpressibleByIntegerLiteral', 'AdditiveArithmetic', 'RealFunctions', 'ElementaryFunctions', 'FloatingPoint', 'Strideable', 'Comparable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
    | `- note: add '@retroactive' to silence this warning
 29 |
 30 |     @_transparent
[18/20] Compiling Float16 Concurrency.swift
/Users/admin/builder/spi-builder-workspace/Sources/Float16/Concurrency.swift:29:1: warning: extension declares a conformance of imported type 'float16' to imported protocol 'Sendable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
27 |
28 | @available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *)
29 | extension float16: @unchecked Sendable {
   | |- warning: extension declares a conformance of imported type 'float16' to imported protocol 'Sendable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
30 |
31 | }
[19/20] Emitting module Float16
/Users/admin/builder/spi-builder-workspace/Sources/Float16/Concurrency.swift:29:1: warning: extension declares a conformance of imported type 'float16' to imported protocol 'Sendable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
27 |
28 | @available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *)
29 | extension float16: @unchecked Sendable {
   | |- warning: extension declares a conformance of imported type 'float16' to imported protocol 'Sendable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
30 |
31 | }
/Users/admin/builder/spi-builder-workspace/Sources/Float16/Real.swift:28:1: warning: extension declares a conformance of imported type 'float16' to imported protocols 'Real', 'AlgebraicField', 'SignedNumeric', 'Numeric', 'ExpressibleByIntegerLiteral', 'AdditiveArithmetic', 'RealFunctions', 'ElementaryFunctions', 'FloatingPoint', 'Strideable', 'Comparable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
 26 | import RealModule
 27 |
 28 | extension float16: Real {
    | |- warning: extension declares a conformance of imported type 'float16' to imported protocols 'Real', 'AlgebraicField', 'SignedNumeric', 'Numeric', 'ExpressibleByIntegerLiteral', 'AdditiveArithmetic', 'RealFunctions', 'ElementaryFunctions', 'FloatingPoint', 'Strideable', 'Comparable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
    | `- note: add '@retroactive' to silence this warning
 29 |
 30 |     @_transparent
/Users/admin/builder/spi-builder-workspace/Sources/Float16/float16.swift:221:1: warning: extension declares a conformance of imported type 'float16' to imported protocol 'CustomStringConvertible'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
 219 | }
 220 |
 221 | extension float16: CustomStringConvertible {
     | |- warning: extension declares a conformance of imported type 'float16' to imported protocol 'CustomStringConvertible'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
     | `- note: add '@retroactive' to silence this warning
 222 |
 223 |     @_transparent
/Users/admin/builder/spi-builder-workspace/Sources/Float16/float16.swift:467:1: warning: extension declares a conformance of imported type 'float16' to imported protocols 'BinaryFloatingPoint', 'ExpressibleByFloatLiteral'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
 465 | }
 466 |
 467 | extension float16: BinaryFloatingPoint {
     | |- warning: extension declares a conformance of imported type 'float16' to imported protocols 'BinaryFloatingPoint', 'ExpressibleByFloatLiteral'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
     | `- note: add '@retroactive' to silence this warning
 468 |
 469 |     public typealias RawExponent = UInt
/Users/admin/builder/spi-builder-workspace/Sources/Float16/float16.swift:1139:1: warning: extension declares a conformance of imported type 'float16' to imported protocols 'Hashable', 'Equatable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
1137 | }
1138 |
1139 | extension float16: Hashable {
     | |- warning: extension declares a conformance of imported type 'float16' to imported protocols 'Hashable', 'Equatable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
     | `- note: add '@retroactive' to silence this warning
1140 |
1141 |     @inlinable
[20/20] Compiling Float16 float16.swift
/Users/admin/builder/spi-builder-workspace/Sources/Float16/float16.swift:221:1: warning: extension declares a conformance of imported type 'float16' to imported protocol 'CustomStringConvertible'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
 219 | }
 220 |
 221 | extension float16: CustomStringConvertible {
     | |- warning: extension declares a conformance of imported type 'float16' to imported protocol 'CustomStringConvertible'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
     | `- note: add '@retroactive' to silence this warning
 222 |
 223 |     @_transparent
/Users/admin/builder/spi-builder-workspace/Sources/Float16/float16.swift:467:1: warning: extension declares a conformance of imported type 'float16' to imported protocols 'BinaryFloatingPoint', 'ExpressibleByFloatLiteral'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
 465 | }
 466 |
 467 | extension float16: BinaryFloatingPoint {
     | |- warning: extension declares a conformance of imported type 'float16' to imported protocols 'BinaryFloatingPoint', 'ExpressibleByFloatLiteral'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
     | `- note: add '@retroactive' to silence this warning
 468 |
 469 |     public typealias RawExponent = UInt
/Users/admin/builder/spi-builder-workspace/Sources/Float16/float16.swift:1139:1: warning: extension declares a conformance of imported type 'float16' to imported protocols 'Hashable', 'Equatable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
1137 | }
1138 |
1139 | extension float16: Hashable {
     | |- warning: extension declares a conformance of imported type 'float16' to imported protocols 'Hashable', 'Equatable'; this will not behave correctly if the owners of 'CFloat16' introduce this conformance in the future
     | `- note: add '@retroactive' to silence this warning
1140 |
1141 |     @inlinable
Build complete! (2.23s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-numerics",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-numerics"
    }
  ],
  "manifest_display_name" : "Float16",
  "name" : "Float16",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Float16",
      "targets" : [
        "Float16"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Float16Tests",
      "module_type" : "SwiftTarget",
      "name" : "Float16Tests",
      "path" : "Tests/Float16Tests",
      "sources" : [
        "Float16Test.swift"
      ],
      "target_dependencies" : [
        "Float16"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Float16",
      "module_type" : "SwiftTarget",
      "name" : "Float16",
      "path" : "Sources/Float16",
      "product_dependencies" : [
        "RealModule"
      ],
      "product_memberships" : [
        "Float16"
      ],
      "sources" : [
        "Concurrency.swift",
        "Real.swift",
        "float16.swift"
      ],
      "target_dependencies" : [
        "CFloat16"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CFloat16",
      "module_type" : "ClangTarget",
      "name" : "CFloat16",
      "path" : "Sources/CFloat16",
      "product_memberships" : [
        "Float16"
      ],
      "sources" : [
        "float16.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.