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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 Voxels, reference 0.2.6 (b45809), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 23:59:29 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/voxels.git
Reference: 0.2.6
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/heckj/voxels
 * tag               0.2.6      -> FETCH_HEAD
HEAD is now at b458098 adding hashable and equatable conformances to VoxelBounds, VoxelArray, and VoxelHash (#133)
Cloned https://github.com/heckj/voxels.git
Revision (git rev-parse @):
b458098e1daacd4560aa84f2f7274c6c93171bb4
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/heckj/voxels.git at 0.2.6
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/heckj/voxels.git
https://github.com/heckj/voxels.git
{
  "dependencies" : [
    {
      "identity" : "heightmap",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.6.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/heckj/Heightmap"
    },
    {
      "identity" : "swift-issue-reporting",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-issue-reporting"
    },
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "Voxels",
  "name" : "Voxels",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Voxels",
      "targets" : [
        "Voxels"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "example-bounds",
      "targets" : [
        "example-bounds"
      ],
      "type" : {
        "snippet" : null
      }
    }
  ],
  "swift_languages_versions" : [
    "6",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "VoxelsTests",
      "module_type" : "SwiftTarget",
      "name" : "VoxelsTests",
      "path" : "Tests/VoxelsTests",
      "product_dependencies" : [
        "Heightmap"
      ],
      "sources" : [
        "HeightmapConversionTests.swift",
        "PerformanceTests/SurfaceNetPerformanceTests.swift",
        "RendererTests/BlockMeshRendererTests.swift",
        "RendererTests/MarchingCubesRendererTests.swift",
        "RendererTests/MeshBufferTests.swift",
        "RendererTests/SurfaceNetRendererTests.swift",
        "RendererTests/SurfaceNetRendererUtilityTests.swift",
        "SDFTests.swift",
        "VectorTests.swift",
        "VoxelAccessibleTests.swift",
        "VoxelArrayTests.swift",
        "VoxelBoundsSequenceTests.swift",
        "VoxelBoundsSliceTests.swift",
        "VoxelBoundsTests.swift",
        "VoxelHashTests.swift",
        "VoxelIndexTests.swift",
        "VoxelScaleTests.swift",
        "VoxelSurfaceTests.swift"
      ],
      "target_dependencies" : [
        "Voxels"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Voxels",
      "module_type" : "SwiftTarget",
      "name" : "Voxels",
      "path" : "Sources/Voxels",
      "product_dependencies" : [
        "Heightmap",
        "IssueReporting"
      ],
      "product_memberships" : [
        "Voxels",
        "example-bounds"
      ],
      "sources" : [
        "GreedyBlockMesh.swift",
        "Renderers/BlockMeshRenderer.swift",
        "Renderers/MarchingCubes.swift",
        "Renderers/MeshBuffer+meshDescriptor.swift",
        "Renderers/MeshBuffer.swift",
        "Renderers/SurfaceNetRenderer+utility.swift",
        "Renderers/SurfaceNetRenderer.swift",
        "Renderers/VoxelBlockRenderable.swift",
        "Renderers/VoxelSurfaceRenderable.swift",
        "SDF.swift",
        "SampleMeshData.swift",
        "StrideIndexable.swift",
        "Vertex/CompleteVertex+generateMeshDescriptor.swift",
        "Vertex/CompleteVertex.swift",
        "Vertex/SIMD2+lerp.swift",
        "Vertex/Vector.swift",
        "VoxelAccessError.swift",
        "VoxelAccessible_VoxelBlockRenderable.swift",
        "VoxelBounds+Collection.swift",
        "VoxelBounds+Sequence.swift",
        "VoxelBounds+slice.swift",
        "VoxelBounds.swift",
        "VoxelConstants.swift",
        "VoxelIndex+neighbors.swift",
        "VoxelIndex.swift",
        "VoxelScale.swift",
        "VoxelStorage/HeightmapConverter.swift",
        "VoxelStorage/HeightmapError.swift",
        "VoxelStorage/VoxelAccessible.swift",
        "VoxelStorage/VoxelArray+Collection.swift",
        "VoxelStorage/VoxelArray+Sequence.swift",
        "VoxelStorage/VoxelArray+updating.swift",
        "VoxelStorage/VoxelArray.swift",
        "VoxelStorage/VoxelHash+Collection.swift",
        "VoxelStorage/VoxelHash+Sequence.swift",
        "VoxelStorage/VoxelHash+dump.swift",
        "VoxelStorage/VoxelHash+sample.swift",
        "VoxelStorage/VoxelHash+updating.swift",
        "VoxelStorage/VoxelHash.swift",
        "VoxelStorage/VoxelUpdate.swift",
        "Voxels.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "example_bounds",
      "module_type" : "SwiftTarget",
      "name" : "example-bounds",
      "path" : "Snippets",
      "product_memberships" : [
        "example-bounds"
      ],
      "sources" : [
        "example-bounds.swift"
      ],
      "target_dependencies" : [
        "Voxels"
      ],
      "type" : "snippet"
    }
  ],
  "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...
[2/9] Write sources
[6/9] Write swift-version-2F0A5646E1D333AE.txt
[8/33] Compiling Heightmap Heightmap+normalize.swift
[9/33] Compiling Heightmap XZIndex.swift
[10/33] Compiling Heightmap Array+normalizeUnitValues.swift
[11/33] Emitting module Heightmap
[12/33] Compiling Heightmap Heightmap.swift
[13/33] Compiling IssueReporting TestContext.swift
[14/33] Compiling IssueReporting Unimplemented.swift
[15/35] Compiling IssueReporting WithExpectedIssue.swift
[16/35] Compiling IssueReporting WithIssueContext.swift
[17/35] Emitting module IssueReporting
[18/35] Compiling IssueReporting Deprecations.swift
[19/35] Compiling IssueReporting FailureObserver.swift
[20/35] Compiling IssueReporting ErrorReporting.swift
[21/35] Compiling IssueReporting AppHostWarning.swift
[22/35] Compiling IssueReporting SwiftTesting.swift
[23/35] Compiling IssueReporting UncheckedSendable.swift
[24/35] Compiling IssueReporting LockIsolated.swift
[25/35] Compiling IssueReporting Rethrows.swift
[26/35] Compiling IssueReporting IsTesting.swift
[27/35] Compiling IssueReporting IssueReporter.swift
[28/35] Compiling IssueReporting Warn.swift
[29/35] Compiling IssueReporting XCTest.swift
[30/35] Compiling IssueReporting RuntimeWarningReporter.swift
[31/35] Compiling IssueReporting ReportIssue.swift
[32/35] Compiling IssueReporting BreakpointReporter.swift
[33/35] Compiling IssueReporting FatalErrorReporter.swift
[34/73] Compiling Voxels VoxelHash+Collection.swift
[35/73] Compiling Voxels VoxelHash+Sequence.swift
[36/73] Compiling Voxels VoxelHash+dump.swift
[37/73] Compiling Voxels VoxelHash+sample.swift
[38/77] Compiling Voxels VoxelArray+Collection.swift
[39/77] Compiling Voxels VoxelArray+Sequence.swift
[40/77] Compiling Voxels VoxelArray+updating.swift
[41/77] Compiling Voxels VoxelArray.swift
[42/77] Compiling Voxels CompleteVertex.swift
[43/77] Compiling Voxels SIMD2+lerp.swift
[44/77] Compiling Voxels Vector.swift
[45/77] Compiling Voxels VoxelAccessError.swift
[46/77] Compiling Voxels SDF.swift
[47/77] Compiling Voxels SampleMeshData.swift
[48/77] Compiling Voxels StrideIndexable.swift
[49/77] Compiling Voxels CompleteVertex+generateMeshDescriptor.swift
[50/77] Compiling Voxels VoxelBounds.swift
[51/77] Compiling Voxels VoxelConstants.swift
[52/77] Compiling Voxels VoxelIndex+neighbors.swift
[53/77] Compiling Voxels VoxelIndex.swift
[54/77] Compiling Voxels VoxelHash+updating.swift
[55/77] Compiling Voxels VoxelHash.swift
[56/77] Compiling Voxels VoxelUpdate.swift
[57/77] Compiling Voxels Voxels.swift
[58/77] Emitting module Voxels
[59/77] Compiling Voxels VoxelScale.swift
[60/77] Compiling Voxels HeightmapConverter.swift
[61/77] Compiling Voxels HeightmapError.swift
[62/77] Compiling Voxels VoxelAccessible.swift
[63/77] Compiling Voxels SurfaceNetRenderer+utility.swift
[64/77] Compiling Voxels SurfaceNetRenderer.swift
[65/77] Compiling Voxels VoxelBlockRenderable.swift
[66/77] Compiling Voxels VoxelSurfaceRenderable.swift
[67/77] Compiling Voxels VoxelAccessible_VoxelBlockRenderable.swift
[68/77] Compiling Voxels VoxelBounds+Collection.swift
[69/77] Compiling Voxels VoxelBounds+Sequence.swift
[70/77] Compiling Voxels VoxelBounds+slice.swift
[71/77] Compiling Voxels GreedyBlockMesh.swift
[72/77] Compiling Voxels BlockMeshRenderer.swift
[73/77] Compiling Voxels MarchingCubes.swift
[74/77] Compiling Voxels MeshBuffer+meshDescriptor.swift
[75/77] Compiling Voxels MeshBuffer.swift
[76/79] Emitting module example_bounds
[77/79] Compiling example_bounds example-bounds.swift
[77/79] Write Objects.LinkFileList
[78/79] Linking example-bounds
Build complete! (31.37s)
Fetching https://github.com/heckj/Heightmap
Fetching https://github.com/pointfreeco/swift-issue-reporting
Fetching https://github.com/apple/swift-docc-plugin
[1/188] Fetching heightmap
[141/2237] Fetching heightmap, swift-docc-plugin
[223/7625] Fetching heightmap, swift-docc-plugin, swift-issue-reporting
Fetched https://github.com/apple/swift-docc-plugin from cache (1.16s)
[3319/5576] Fetching heightmap, swift-issue-reporting
Fetched https://github.com/heckj/Heightmap from cache (1.36s)
Fetched https://github.com/pointfreeco/swift-issue-reporting from cache (1.36s)
Computing version for https://github.com/heckj/Heightmap
Computed https://github.com/heckj/Heightmap at 0.6.4 (1.85s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (0.94s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit from cache
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.80s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.46s)
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/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.4.3
Build complete.
{
  "dependencies" : [
    {
      "identity" : "heightmap",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.6.0",
            "upper_bound" : "1.0.0"
          }
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      },
      "type" : "sourceControl",
      "url" : "https://github.com/heckj/Heightmap"
    },
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      "identity" : "swift-issue-reporting",
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            "upper_bound" : "2.0.0"
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        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-issue-reporting"
    },
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
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      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
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  ],
  "manifest_display_name" : "Voxels",
  "name" : "Voxels",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Voxels",
      "targets" : [
        "Voxels"
      ],
      "type" : {
        "library" : [
          "automatic"
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      }
    },
    {
      "name" : "example-bounds",
      "targets" : [
        "example-bounds"
      ],
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      }
    }
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  "swift_languages_versions" : [
    "6",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "VoxelsTests",
      "module_type" : "SwiftTarget",
      "name" : "VoxelsTests",
      "path" : "Tests/VoxelsTests",
      "product_dependencies" : [
        "Heightmap"
      ],
      "sources" : [
        "HeightmapConversionTests.swift",
        "PerformanceTests/SurfaceNetPerformanceTests.swift",
        "RendererTests/BlockMeshRendererTests.swift",
        "RendererTests/MarchingCubesRendererTests.swift",
        "RendererTests/MeshBufferTests.swift",
        "RendererTests/SurfaceNetRendererTests.swift",
        "RendererTests/SurfaceNetRendererUtilityTests.swift",
        "SDFTests.swift",
        "VectorTests.swift",
        "VoxelAccessibleTests.swift",
        "VoxelArrayTests.swift",
        "VoxelBoundsSequenceTests.swift",
        "VoxelBoundsSliceTests.swift",
        "VoxelBoundsTests.swift",
        "VoxelHashTests.swift",
        "VoxelIndexTests.swift",
        "VoxelScaleTests.swift",
        "VoxelSurfaceTests.swift"
      ],
      "target_dependencies" : [
        "Voxels"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Voxels",
      "module_type" : "SwiftTarget",
      "name" : "Voxels",
      "path" : "Sources/Voxels",
      "product_dependencies" : [
        "Heightmap",
        "IssueReporting"
      ],
      "product_memberships" : [
        "Voxels",
        "example-bounds"
      ],
      "sources" : [
        "GreedyBlockMesh.swift",
        "Renderers/BlockMeshRenderer.swift",
        "Renderers/MarchingCubes.swift",
        "Renderers/MeshBuffer+meshDescriptor.swift",
        "Renderers/MeshBuffer.swift",
        "Renderers/SurfaceNetRenderer+utility.swift",
        "Renderers/SurfaceNetRenderer.swift",
        "Renderers/VoxelBlockRenderable.swift",
        "Renderers/VoxelSurfaceRenderable.swift",
        "SDF.swift",
        "SampleMeshData.swift",
        "StrideIndexable.swift",
        "Vertex/CompleteVertex+generateMeshDescriptor.swift",
        "Vertex/CompleteVertex.swift",
        "Vertex/SIMD2+lerp.swift",
        "Vertex/Vector.swift",
        "VoxelAccessError.swift",
        "VoxelAccessible_VoxelBlockRenderable.swift",
        "VoxelBounds+Collection.swift",
        "VoxelBounds+Sequence.swift",
        "VoxelBounds+slice.swift",
        "VoxelBounds.swift",
        "VoxelConstants.swift",
        "VoxelIndex+neighbors.swift",
        "VoxelIndex.swift",
        "VoxelScale.swift",
        "VoxelStorage/HeightmapConverter.swift",
        "VoxelStorage/HeightmapError.swift",
        "VoxelStorage/VoxelAccessible.swift",
        "VoxelStorage/VoxelArray+Collection.swift",
        "VoxelStorage/VoxelArray+Sequence.swift",
        "VoxelStorage/VoxelArray+updating.swift",
        "VoxelStorage/VoxelArray.swift",
        "VoxelStorage/VoxelHash+Collection.swift",
        "VoxelStorage/VoxelHash+Sequence.swift",
        "VoxelStorage/VoxelHash+dump.swift",
        "VoxelStorage/VoxelHash+sample.swift",
        "VoxelStorage/VoxelHash+updating.swift",
        "VoxelStorage/VoxelHash.swift",
        "VoxelStorage/VoxelUpdate.swift",
        "Voxels.swift"
      ],
      "type" : "library"
    },
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      "c99name" : "example_bounds",
      "module_type" : "SwiftTarget",
      "name" : "example-bounds",
      "path" : "Snippets",
      "product_memberships" : [
        "example-bounds"
      ],
      "sources" : [
        "example-bounds.swift"
      ],
      "target_dependencies" : [
        "Voxels"
      ],
      "type" : "snippet"
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  "tools_version" : "5.8"
}
Done.