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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

Failed to build Burritos, reference master (309dbe), with Swift 6.1 for macOS (SPM) on 25 Apr 2025 23:15:05 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/guillermomuntaner/Burritos.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/guillermomuntaner/Burritos
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 309dbe1 Limited dynamic UIColor constructor to iOS and tvOS
Cloned https://github.com/guillermomuntaner/Burritos.git
Revision (git rev-parse @):
309dbe1b5b3af8839ca6a7ebb2ad6ddf041bf420
SUCCESS checkout https://github.com/guillermomuntaner/Burritos.git at master
========================================
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": "burritos",
      "name": "Burritos",
      "url": "https://github.com/guillermomuntaner/Burritos.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Burritos",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/guillermomuntaner/Burritos.git
[1/578] Fetching burritos
Fetched https://github.com/guillermomuntaner/Burritos.git from cache (0.69s)
Creating working copy for https://github.com/guillermomuntaner/Burritos.git
Working copy of https://github.com/guillermomuntaner/Burritos.git resolved at master (309dbe1)
warning: '.resolve-product-dependencies': dependency 'burritos' 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/guillermomuntaner/Burritos.git
https://github.com/guillermomuntaner/Burritos.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Burritos",
  "name" : "Burritos",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.10"
    },
    {
      "name" : "ios",
      "version" : "8.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "Burritos",
      "targets" : [
        "AtomicWrite",
        "Clamping",
        "Copying",
        "DefaultValue",
        "DynamicUIColor",
        "EnvironmentVariable",
        "Expirable",
        "LateInit",
        "Lazy",
        "LazyConstant",
        "Trimmed",
        "UndoRedo",
        "UserDefault"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "UserDefaultTests",
      "module_type" : "SwiftTarget",
      "name" : "UserDefaultTests",
      "path" : "Tests/UserDefaultTests",
      "sources" : [
        "UserDefaultTests.swift"
      ],
      "target_dependencies" : [
        "UserDefault"
      ],
      "type" : "test"
    },
    {
      "c99name" : "UserDefault",
      "module_type" : "SwiftTarget",
      "name" : "UserDefault",
      "path" : "Sources/UserDefault",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "UserDefault.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "UndoRedoTests",
      "module_type" : "SwiftTarget",
      "name" : "UndoRedoTests",
      "path" : "Tests/UndoRedoTests",
      "sources" : [
        "UndoRedoTests.swift"
      ],
      "target_dependencies" : [
        "UndoRedo"
      ],
      "type" : "test"
    },
    {
      "c99name" : "UndoRedo",
      "module_type" : "SwiftTarget",
      "name" : "UndoRedo",
      "path" : "Sources/UndoRedo",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "UndoRedo.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "TrimmedTests",
      "module_type" : "SwiftTarget",
      "name" : "TrimmedTests",
      "path" : "Tests/TrimmedTests",
      "sources" : [
        "TrimmedTests.swift"
      ],
      "target_dependencies" : [
        "Trimmed"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Trimmed",
      "module_type" : "SwiftTarget",
      "name" : "Trimmed",
      "path" : "Sources/Trimmed",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "Trimmed.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "LazyTests",
      "module_type" : "SwiftTarget",
      "name" : "LazyTests",
      "path" : "Tests/LazyTests",
      "sources" : [
        "LazyConstantTests.swift",
        "LazyTests.swift"
      ],
      "target_dependencies" : [
        "Lazy",
        "LazyConstant"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LazyConstant",
      "module_type" : "SwiftTarget",
      "name" : "LazyConstant",
      "path" : "Sources/LazyConstant",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "LazyConstant.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Lazy",
      "module_type" : "SwiftTarget",
      "name" : "Lazy",
      "path" : "Sources/Lazy",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "Lazy.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "LateInitTests",
      "module_type" : "SwiftTarget",
      "name" : "LateInitTests",
      "path" : "Tests/LateInitTests",
      "sources" : [
        "LateInitTests.swift"
      ],
      "target_dependencies" : [
        "LateInit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LateInit",
      "module_type" : "SwiftTarget",
      "name" : "LateInit",
      "path" : "Sources/LateInit",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "LateInit.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ExpirableTests",
      "module_type" : "SwiftTarget",
      "name" : "ExpirableTests",
      "path" : "Tests/ExpirableTests",
      "sources" : [
        "ExpirableTests.swift"
      ],
      "target_dependencies" : [
        "Expirable"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Expirable",
      "module_type" : "SwiftTarget",
      "name" : "Expirable",
      "path" : "Sources/Expirable",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "Expirable.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "EnvironmentVariableTests",
      "module_type" : "SwiftTarget",
      "name" : "EnvironmentVariableTests",
      "path" : "Tests/EnvironmentVariableTests",
      "sources" : [
        "EnvironmentVariableTests.swift"
      ],
      "target_dependencies" : [
        "EnvironmentVariable"
      ],
      "type" : "test"
    },
    {
      "c99name" : "EnvironmentVariable",
      "module_type" : "SwiftTarget",
      "name" : "EnvironmentVariable",
      "path" : "Sources/EnvironmentVariable",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "EnvironmentVariable.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "DynamicUIColorTests",
      "module_type" : "SwiftTarget",
      "name" : "DynamicUIColorTests",
      "path" : "Tests/DynamicUIColorTests",
      "sources" : [
        "DynamicUIColorTests.swift"
      ],
      "target_dependencies" : [
        "DynamicUIColor"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DynamicUIColor",
      "module_type" : "SwiftTarget",
      "name" : "DynamicUIColor",
      "path" : "Sources/DynamicUIColor",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "DynamicUIColor.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "DefaultValueTests",
      "module_type" : "SwiftTarget",
      "name" : "DefaultValueTests",
      "path" : "Tests/DefaultValueTests",
      "sources" : [
        "DefaultValueTests.swift"
      ],
      "target_dependencies" : [
        "DefaultValue"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DefaultValue",
      "module_type" : "SwiftTarget",
      "name" : "DefaultValue",
      "path" : "Sources/DefaultValue",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "DefaultValue.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CopyingTests",
      "module_type" : "SwiftTarget",
      "name" : "CopyingTests",
      "path" : "Tests/CopyingTests",
      "sources" : [
        "CopyingTests.swift"
      ],
      "target_dependencies" : [
        "Copying"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Copying",
      "module_type" : "SwiftTarget",
      "name" : "Copying",
      "path" : "Sources/Copying",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "Copying.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ClampingTests",
      "module_type" : "SwiftTarget",
      "name" : "ClampingTests",
      "path" : "Tests/ClampingTests",
      "sources" : [
        "ClampingTests.swift"
      ],
      "target_dependencies" : [
        "Clamping"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Clamping",
      "module_type" : "SwiftTarget",
      "name" : "Clamping",
      "path" : "Sources/Clamping",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "Clamping.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "AtomicWriteTests",
      "module_type" : "SwiftTarget",
      "name" : "AtomicWriteTests",
      "path" : "Tests/AtomicWriteTests",
      "sources" : [
        "AtomicWriteTests.swift"
      ],
      "target_dependencies" : [
        "AtomicWrite"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AtomicWrite",
      "module_type" : "SwiftTarget",
      "name" : "AtomicWrite",
      "path" : "Sources/AtomicWrite",
      "product_memberships" : [
        "Burritos"
      ],
      "sources" : [
        "AtomicWrite.swift"
      ],
      "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...
[0/14] Write sources
[13/14] Write swift-version-2F0A5646E1D333AE.txt
[15/34] Emitting module LazyConstant
[16/34] Compiling DefaultValue DefaultValue.swift
[17/34] Compiling LazyConstant LazyConstant.swift
[18/34] Emitting module DefaultValue
[19/34] Emitting module LateInit
[20/34] Compiling LateInit LateInit.swift
[21/34] Compiling Lazy Lazy.swift
[22/34] Emitting module Lazy
[23/34] Emitting module DynamicUIColor
[24/34] Compiling DynamicUIColor DynamicUIColor.swift
[25/40] Emitting module Clamping
[26/40] Compiling Clamping Clamping.swift
[27/40] Emitting module Copying
[28/40] Compiling Copying Copying.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[29/40] Emitting module UserDefault
/Users/admin/builder/spi-builder-workspace/Sources/UserDefault/UserDefault.swift:74:11: error: 'Float80' is unavailable: Float80 is not available on target platform.
72 | extension Float: PropertyListValue {}
73 | #if os(macOS)
74 | extension Float80: PropertyListValue {}
   |           `- error: 'Float80' is unavailable: Float80 is not available on target platform.
75 | #endif
76 |
Swift.Float80:2:23: note: 'Float80' has been explicitly marked unavailable here
1 | @available(*, unavailable, message: "Float80 is not available on target platform.")
2 | @frozen public struct Float80 {
  |                       `- note: 'Float80' has been explicitly marked unavailable here
3 |     public init()
4 | }
[30/40] Compiling UserDefault UserDefault.swift
/Users/admin/builder/spi-builder-workspace/Sources/UserDefault/UserDefault.swift:74:11: error: 'Float80' is unavailable: Float80 is not available on target platform.
72 | extension Float: PropertyListValue {}
73 | #if os(macOS)
74 | extension Float80: PropertyListValue {}
   |           `- error: 'Float80' is unavailable: Float80 is not available on target platform.
75 | #endif
76 |
Swift.Float80:2:23: note: 'Float80' has been explicitly marked unavailable here
1 | @available(*, unavailable, message: "Float80 is not available on target platform.")
2 | @frozen public struct Float80 {
  |                       `- note: 'Float80' has been explicitly marked unavailable here
3 |     public init()
4 | }
[31/40] Emitting module AtomicWrite
[32/40] Emitting module Trimmed
[33/40] Emitting module UndoRedo
[34/40] Emitting module Expirable
[35/40] Emitting module EnvironmentVariable
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-2F0A5646E1D333AE.txt
[2/21] Emitting module LateInit
[3/21] Compiling LateInit LateInit.swift
[4/21] Emitting module LazyConstant
[5/21] Compiling LazyConstant LazyConstant.swift
[6/21] Compiling Lazy Lazy.swift
[7/21] Emitting module Lazy
[8/21] Emitting module DefaultValue
[9/21] Compiling DefaultValue DefaultValue.swift
[10/21] Compiling DynamicUIColor DynamicUIColor.swift
[11/21] Emitting module DynamicUIColor
error: emit-module command failed with exit code 1 (use -v to see invocation)
[12/25] Emitting module UserDefault
/Users/admin/builder/spi-builder-workspace/Sources/UserDefault/UserDefault.swift:74:11: error: 'Float80' is unavailable: Float80 is not available on target platform.
72 | extension Float: PropertyListValue {}
73 | #if os(macOS)
74 | extension Float80: PropertyListValue {}
   |           `- error: 'Float80' is unavailable: Float80 is not available on target platform.
75 | #endif
76 |
Swift.Float80:2:23: note: 'Float80' has been explicitly marked unavailable here
1 | @available(*, unavailable, message: "Float80 is not available on target platform.")
2 | @frozen public struct Float80 {
  |                       `- note: 'Float80' has been explicitly marked unavailable here
3 |     public init()
4 | }
[13/25] Compiling UserDefault UserDefault.swift
/Users/admin/builder/spi-builder-workspace/Sources/UserDefault/UserDefault.swift:74:11: error: 'Float80' is unavailable: Float80 is not available on target platform.
72 | extension Float: PropertyListValue {}
73 | #if os(macOS)
74 | extension Float80: PropertyListValue {}
   |           `- error: 'Float80' is unavailable: Float80 is not available on target platform.
75 | #endif
76 |
Swift.Float80:2:23: note: 'Float80' has been explicitly marked unavailable here
1 | @available(*, unavailable, message: "Float80 is not available on target platform.")
2 | @frozen public struct Float80 {
  |                       `- note: 'Float80' has been explicitly marked unavailable here
3 |     public init()
4 | }
BUILD FAILURE 6.1 macosSpm