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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 CASimEngine, reference 0.1.0 (46566c), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 21:56:52 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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/heckj/CASimEngine.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/heckj/CASimEngine
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at 46566cb removing dynamic scopes
Cloned https://github.com/heckj/CASimEngine.git
Revision (git rev-parse @):
46566cb9bbe934c30218dbdca78b0d2e9eb1ab6c
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/heckj/CASimEngine.git at 0.1.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/heckj/CASimEngine.git
https://github.com/heckj/CASimEngine.git
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/swiftlang/swift-docc-plugin"
    },
    {
      "identity" : "voxels",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/heckj/voxels"
    }
  ],
  "manifest_display_name" : "CASimEngine",
  "name" : "CASimEngine",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "CASimEngine",
      "targets" : [
        "CASimEngine"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "CASimEngineTests",
      "module_type" : "SwiftTarget",
      "name" : "CASimEngineTests",
      "path" : "Tests/CASimEngineTests",
      "sources" : [
        "EngineFunctionalTests.swift",
        "EngineSmokeTests.swift",
        "ExampleRules.swift"
      ],
      "target_dependencies" : [
        "CASimEngine"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CASimEngine",
      "module_type" : "SwiftTarget",
      "name" : "CASimEngine",
      "path" : "Sources/CASimEngine",
      "product_dependencies" : [
        "Voxels"
      ],
      "product_memberships" : [
        "CASimEngine"
      ],
      "sources" : [
        "CADetailedDiagnostic.swift",
        "CADiagnostic.swift",
        "CARuleResult.swift",
        "CARuleScope.swift",
        "CASimulationEngine.swift",
        "CASimulationRule.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
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
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/7] Write sources
[6/7] Write swift-version-2F0A5646E1D333AE.txt
[8/31] Compiling Heightmap XZIndex.swift
[9/31] Compiling Heightmap Heightmap+normalize.swift
[10/31] Compiling Heightmap Heightmap.swift
[11/31] Emitting module Heightmap
[12/31] Compiling Heightmap Array+normalizeUnitValues.swift
[13/31] Compiling IssueReporting Warn.swift
[14/31] Compiling IssueReporting XCTest.swift
[15/31] Compiling IssueReporting TestContext.swift
[16/31] Compiling IssueReporting Unimplemented.swift
[17/33] Compiling IssueReporting BreakpointReporter.swift
[18/33] Compiling IssueReporting FatalErrorReporter.swift
[19/33] Compiling IssueReporting SwiftTesting.swift
[20/33] Compiling IssueReporting UncheckedSendable.swift
[21/33] Compiling IssueReporting IsTesting.swift
[22/33] Compiling IssueReporting IssueReporter.swift
[23/33] Compiling IssueReporting LockIsolated.swift
[24/33] Compiling IssueReporting Rethrows.swift
[25/33] Compiling IssueReporting Deprecations.swift
[26/33] Compiling IssueReporting FailureObserver.swift
[27/33] Compiling IssueReporting ErrorReporting.swift
[28/33] Compiling IssueReporting AppHostWarning.swift
[29/33] Emitting module IssueReporting
[30/33] Compiling IssueReporting RuntimeWarningReporter.swift
[31/33] Compiling IssueReporting ReportIssue.swift
[32/33] Compiling IssueReporting WithExpectedIssue.swift
[33/33] Compiling IssueReporting WithIssueContext.swift
[34/71] Compiling Voxels VoxelArray+Collection.swift
[35/71] Compiling Voxels VoxelArray+Sequence.swift
[36/71] Compiling Voxels VoxelArray+updating.swift
[37/71] Compiling Voxels VoxelArray.swift
[38/75] Compiling Voxels SDF.swift
[39/75] Compiling Voxels SampleMeshData.swift
[40/75] Compiling Voxels StrideIndexable.swift
[41/75] Compiling Voxels CompleteVertex+generateMeshDescriptor.swift
[42/75] Compiling Voxels VoxelHash+Collection.swift
[43/75] Compiling Voxels VoxelHash+Sequence.swift
[44/75] Compiling Voxels VoxelHash+dump.swift
[45/75] Compiling Voxels VoxelHash+sample.swift
[46/75] Compiling Voxels VoxelHash+updating.swift
[47/75] Compiling Voxels VoxelHash.swift
[48/75] Compiling Voxels VoxelUpdate.swift
[49/75] Compiling Voxels Voxels.swift
[50/75] Emitting module Voxels
[51/75] Compiling Voxels VoxelBounds.swift
[52/75] Compiling Voxels VoxelConstants.swift
[53/75] Compiling Voxels VoxelIndex+neighbors.swift
[54/75] Compiling Voxels VoxelIndex.swift
[55/75] Compiling Voxels VoxelScale.swift
[56/75] Compiling Voxels HeightmapConverter.swift
[57/75] Compiling Voxels HeightmapError.swift
[58/75] Compiling Voxels VoxelAccessible.swift
[59/75] Compiling Voxels SurfaceNetRenderer+utility.swift
[60/75] Compiling Voxels SurfaceNetRenderer.swift
[61/75] Compiling Voxels VoxelBlockRenderable.swift
[62/75] Compiling Voxels VoxelSurfaceRenderable.swift
[63/75] Compiling Voxels VoxelAccessible_VoxelBlockRenderable.swift
[64/75] Compiling Voxels VoxelBounds+Collection.swift
[65/75] Compiling Voxels VoxelBounds+Sequence.swift
[66/75] Compiling Voxels VoxelBounds+slice.swift
[67/75] Compiling Voxels CompleteVertex.swift
[68/75] Compiling Voxels SIMD2+lerp.swift
[69/75] Compiling Voxels Vector.swift
[70/75] Compiling Voxels VoxelAccessError.swift
[71/75] Compiling Voxels GreedyBlockMesh.swift
[72/75] Compiling Voxels BlockMeshRenderer.swift
[73/75] Compiling Voxels MarchingCubes.swift
[74/75] Compiling Voxels MeshBuffer+meshDescriptor.swift
[75/75] Compiling Voxels MeshBuffer.swift
[76/82] Compiling CASimEngine CARuleResult.swift
[77/82] Compiling CASimEngine CARuleScope.swift
[78/82] Compiling CASimEngine CASimulationRule.swift
[79/82] Compiling CASimEngine CADetailedDiagnostic.swift
[80/82] Compiling CASimEngine CASimulationEngine.swift
[81/82] Emitting module CASimEngine
[82/82] Compiling CASimEngine CADiagnostic.swift
Build complete! (35.93s)
Fetching https://github.com/swiftlang/swift-docc-plugin from cache
Fetching https://github.com/heckj/voxels
[1/3050] Fetching voxels
Fetched https://github.com/heckj/voxels from cache (1.91s)
Fetched https://github.com/swiftlang/swift-docc-plugin from cache (1.91s)
Computing version for https://github.com/heckj/voxels
Computed https://github.com/heckj/voxels at 0.2.6 (2.40s)
Fetching https://github.com/heckj/Heightmap
Fetching https://github.com/pointfreeco/swift-issue-reporting
[1/188] Fetching heightmap
[189/5576] Fetching heightmap, swift-issue-reporting
Fetched https://github.com/heckj/Heightmap from cache (1.89s)
Fetched https://github.com/pointfreeco/swift-issue-reporting from cache (1.89s)
Computing version for https://github.com/heckj/Heightmap
Computed https://github.com/heckj/Heightmap at 0.6.4 (2.39s)
Computing version for https://github.com/swiftlang/swift-docc-plugin
Computed https://github.com/swiftlang/swift-docc-plugin at 1.4.3 (0.92s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit from cache
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.73s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.40s)
Computing version for https://github.com/pointfreeco/swift-issue-reporting
Computed https://github.com/pointfreeco/swift-issue-reporting at 1.5.2 (0.50s)
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
Creating working copy for https://github.com/pointfreeco/swift-issue-reporting
Working copy of https://github.com/pointfreeco/swift-issue-reporting resolved at 1.5.2
Creating working copy for https://github.com/heckj/Heightmap
Working copy of https://github.com/heckj/Heightmap resolved at 0.6.4
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/heckj/voxels
Working copy of https://github.com/heckj/voxels resolved at 0.2.6
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/swiftlang/swift-docc-plugin"
    },
    {
      "identity" : "voxels",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/heckj/voxels"
    }
  ],
  "manifest_display_name" : "CASimEngine",
  "name" : "CASimEngine",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "CASimEngine",
      "targets" : [
        "CASimEngine"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "CASimEngineTests",
      "module_type" : "SwiftTarget",
      "name" : "CASimEngineTests",
      "path" : "Tests/CASimEngineTests",
      "sources" : [
        "EngineFunctionalTests.swift",
        "EngineSmokeTests.swift",
        "ExampleRules.swift"
      ],
      "target_dependencies" : [
        "CASimEngine"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CASimEngine",
      "module_type" : "SwiftTarget",
      "name" : "CASimEngine",
      "path" : "Sources/CASimEngine",
      "product_dependencies" : [
        "Voxels"
      ],
      "product_memberships" : [
        "CASimEngine"
      ],
      "sources" : [
        "CADetailedDiagnostic.swift",
        "CADiagnostic.swift",
        "CARuleResult.swift",
        "CARuleScope.swift",
        "CASimulationEngine.swift",
        "CASimulationRule.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
Done.