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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 main (bf3fe6), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 00:00:24 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: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/heckj/voxels
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at bf3fe67 aligning the weird IssueReporting thing and updating the image snaps (#136)
Cloned https://github.com/heckj/voxels.git
Revision (git rev-parse @):
bf3fe6767497c55d9a510b6172868a60798bba89
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/heckj/voxels.git at main
========================================
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" : "xctest-dynamic-overlay",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.5.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/xctest-dynamic-overlay"
    },
    {
      "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 XZIndex.swift
[9/33] Compiling Heightmap Array+normalizeUnitValues.swift
[10/33] Compiling Heightmap Heightmap.swift
[11/33] Emitting module Heightmap
[12/33] Compiling Heightmap Heightmap+normalize.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] Compiling IssueReporting BreakpointReporter.swift
[18/35] Compiling IssueReporting FatalErrorReporter.swift
[19/35] Compiling IssueReporting IsTesting.swift
[20/35] Compiling IssueReporting IssueReporter.swift
[21/35] Compiling IssueReporting Warn.swift
[22/35] Compiling IssueReporting XCTest.swift
[23/35] Compiling IssueReporting RuntimeWarningReporter.swift
[24/35] Compiling IssueReporting ReportIssue.swift
[25/35] Compiling IssueReporting ErrorReporting.swift
[26/35] Compiling IssueReporting AppHostWarning.swift
[27/35] Emitting module IssueReporting
[28/35] Compiling IssueReporting Deprecations.swift
[29/35] Compiling IssueReporting FailureObserver.swift
[30/35] Compiling IssueReporting SwiftTesting.swift
[31/35] Compiling IssueReporting UncheckedSendable.swift
[32/35] Compiling IssueReporting LockIsolated.swift
[33/35] Compiling IssueReporting Rethrows.swift
[34/73] Compiling Voxels VoxelArray+Collection.swift
[35/73] Compiling Voxels VoxelArray+Sequence.swift
[36/73] Compiling Voxels VoxelArray+updating.swift
[37/73] Compiling Voxels VoxelArray.swift
[38/73] Compiling Voxels VoxelAccessible_VoxelBlockRenderable.swift
[39/73] Compiling Voxels VoxelBounds+Collection.swift
[40/73] Compiling Voxels VoxelBounds+Sequence.swift
[41/73] Compiling Voxels VoxelBounds+slice.swift
[42/73] Compiling Voxels CompleteVertex.swift
[43/73] Compiling Voxels SIMD2+lerp.swift
[44/73] Compiling Voxels Vector.swift
[45/73] Compiling Voxels VoxelAccessError.swift
[46/73] Compiling Voxels VoxelScale.swift
[47/73] Compiling Voxels HeightmapConverter.swift
[48/73] Compiling Voxels HeightmapError.swift
[49/73] Compiling Voxels VoxelAccessible.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 SDF.swift
[55/77] Compiling Voxels SampleMeshData.swift
[56/77] Compiling Voxels StrideIndexable.swift
[57/77] Compiling Voxels CompleteVertex+generateMeshDescriptor.swift
[58/77] Compiling Voxels VoxelHash+updating.swift
[59/77] Compiling Voxels VoxelHash.swift
[60/77] Compiling Voxels VoxelUpdate.swift
[61/77] Compiling Voxels Voxels.swift
[62/77] Emitting module Voxels
[63/77] Compiling Voxels VoxelHash+Collection.swift
[64/77] Compiling Voxels VoxelHash+Sequence.swift
[65/77] Compiling Voxels VoxelHash+dump.swift
[66/77] Compiling Voxels VoxelHash+sample.swift
[67/77] Compiling Voxels SurfaceNetRenderer+utility.swift
[68/77] Compiling Voxels SurfaceNetRenderer.swift
[69/77] Compiling Voxels VoxelBlockRenderable.swift
[70/77] Compiling Voxels VoxelSurfaceRenderable.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] Compiling example_bounds example-bounds.swift
[77/79] Emitting module example_bounds
[77/79] Write Objects.LinkFileList
[78/79] Linking example-bounds
Build complete! (31.01s)
Fetching https://github.com/heckj/Heightmap
Fetching https://github.com/apple/swift-docc-plugin
Fetching https://github.com/pointfreeco/xctest-dynamic-overlay from cache
[1/188] Fetching heightmap
[182/2237] Fetching heightmap, swift-docc-plugin
Fetched https://github.com/apple/swift-docc-plugin from cache (1.20s)
Fetched https://github.com/heckj/Heightmap from cache (1.20s)
Fetched https://github.com/pointfreeco/xctest-dynamic-overlay from cache (1.20s)
Computing version for https://github.com/pointfreeco/xctest-dynamic-overlay
Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.5.2 (1.73s)
Computing version for https://github.com/heckj/Heightmap
Computed https://github.com/heckj/Heightmap at 0.6.4 (0.44s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (0.90s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit from cache
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.86s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.50s)
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/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.5.2
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
Creating working copy for https://github.com/heckj/Heightmap
Working copy of https://github.com/heckj/Heightmap resolved at 0.6.4
Build complete.
{
  "dependencies" : [
    {
      "identity" : "heightmap",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.6.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/heckj/Heightmap"
    },
    {
      "identity" : "xctest-dynamic-overlay",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.5.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/xctest-dynamic-overlay"
    },
    {
      "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"
}
Done.