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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 slox, reference master (6f9b47), with Swift 6.1 for visionOS using Xcode 16.3 on 25 Apr 2025 04:05:59 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/alexito4/slox.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/alexito4/slox
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 6f9b479 update readme
Cloned https://github.com/alexito4/slox.git
Revision (git rev-parse @):
6f9b47958fcf064a4bcde3f6cf7ffb7664a13bf6
SUCCESS checkout https://github.com/alexito4/slox.git at master
========================================
Build
========================================
Selected platform:         visionOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/alexito4/slox.git
https://github.com/alexito4/slox.git
{
  "dependencies" : [
    {
      "identity" : "result",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.2.4",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/antitypical/Result.git"
    }
  ],
  "manifest_display_name" : "slox",
  "name" : "slox",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "slox",
      "targets" : [
        "slox"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "GenerateAst",
      "targets" : [
        "GenerateAst"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "slox",
      "module_type" : "SwiftTarget",
      "name" : "slox",
      "path" : "Sources/slox",
      "product_memberships" : [
        "slox"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "LoxCore"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "LoxCore",
      "module_type" : "SwiftTarget",
      "name" : "LoxCore",
      "path" : "Sources/LoxCore",
      "product_dependencies" : [
        "Result"
      ],
      "product_memberships" : [
        "slox"
      ],
      "sources" : [
        "AstPrinter.swift",
        "Debug.swift",
        "Environment.swift",
        "Expr.swift",
        "Lox.swift",
        "Parser.swift",
        "Resolver.swift",
        "Runtime/Interpreter.swift",
        "Runtime/LoxCallable.swift",
        "Runtime/LoxClass.swift",
        "Runtime/LoxInstance.swift",
        "Scanner.swift",
        "Stmt.swift",
        "Token.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GenerateAst",
      "module_type" : "SwiftTarget",
      "name" : "GenerateAst",
      "path" : "Sources/GenerateAst",
      "product_memberships" : [
        "GenerateAst"
      ],
      "sources" : [
        "Printer.swift",
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "4.0"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
{
  "dependencies" : [
    {
      "identity" : "result",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.2.4",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/antitypical/Result.git"
    }
  ],
  "manifest_display_name" : "slox",
  "name" : "slox",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "slox",
      "targets" : [
        "slox"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "GenerateAst",
      "targets" : [
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  ],
  "targets" : [
    {
      "c99name" : "slox",
      "module_type" : "SwiftTarget",
      "name" : "slox",
      "path" : "Sources/slox",
      "product_memberships" : [
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      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "LoxCore"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "LoxCore",
      "module_type" : "SwiftTarget",
      "name" : "LoxCore",
      "path" : "Sources/LoxCore",
      "product_dependencies" : [
        "Result"
      ],
      "product_memberships" : [
        "slox"
      ],
      "sources" : [
        "AstPrinter.swift",
        "Debug.swift",
        "Environment.swift",
        "Expr.swift",
        "Lox.swift",
        "Parser.swift",
        "Resolver.swift",
        "Runtime/Interpreter.swift",
        "Runtime/LoxCallable.swift",
        "Runtime/LoxClass.swift",
        "Runtime/LoxInstance.swift",
        "Scanner.swift",
        "Stmt.swift",
        "Token.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GenerateAst",
      "module_type" : "SwiftTarget",
      "name" : "GenerateAst",
      "path" : "Sources/GenerateAst",
      "product_memberships" : [
        "GenerateAst"
      ],
      "sources" : [
        "Printer.swift",
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "4.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "slox",
    "schemes" : [
      "GenerateAst",
      "ResultPackageDescription",
      "slox",
      "slox",
      "slox-Package",
      "sloxPackageDescription"
    ],
    "targets" : [
      "sloxPackageDescription",
      "ResultPackageDescription",
      "GenerateAst",
      "slox",
      "LoxCore",
      "Result"
    ]
  }
}
2025-04-24 21:05:57.925 xcodebuild[569:3185] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_21-05-0057.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Updating from https://github.com/antitypical/Result.git
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-24 21:05:59.392 xcodebuild[752:3993] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_21-05-0059.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
BUILD FAILURE 6.1 visionOS