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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 swift-geometrize, reference 1.2.1 (2f3b34), with Swift 6.1 for Linux on 28 Apr 2025 19:25:09 UTC.

Swift 6 data race errors: 1

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/valeriyvan/swift-geometrize.git
Reference: 1.2.1
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/valeriyvan/swift-geometrize
 * tag               1.2.1      -> FETCH_HEAD
HEAD is now at 2f3b34c Use stable version of SwiftLint
Cloned https://github.com/valeriyvan/swift-geometrize.git
Revision (git rev-parse @):
2f3b34cb6a9f0820c0ca411528abcd9a45202088
SUCCESS checkout https://github.com/valeriyvan/swift-geometrize.git at 1.2.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/valeriyvan/swift-geometrize.git
https://github.com/valeriyvan/swift-geometrize.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "swift-png",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "4.4.1",
            "upper_bound" : "5.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/tayloraswift/swift-png.git"
    },
    {
      "identity" : "jpeg",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/tayloraswift/jpeg.git"
    },
    {
      "identity" : "swift-snapshot-testing",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.13.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-snapshot-testing.git"
    },
    {
      "identity" : "swift-algorithms",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-algorithms.git"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.4",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser.git"
    },
    {
      "identity" : "swiftlint",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.55.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/realm/SwiftLint.git"
    }
  ],
  "manifest_display_name" : "swift-geometrize",
  "name" : "swift-geometrize",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "ios",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "Geometrize",
      "targets" : [
        "Geometrize"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "BitmapImportExport",
      "targets" : [
        "BitmapImportExport"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "geometrize",
      "targets" : [
        "geometrize-cli"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "geometrizeTests",
      "module_type" : "SwiftTarget",
      "name" : "geometrizeTests",
      "path" : "Tests/geometrizeTests",
      "product_dependencies" : [
        "PNG",
        "SnapshotTesting"
      ],
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Tests/geometrizeTests/Resources",
          "rule" : {
            "copy" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/geometrizeTests/__Snapshots__",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "ArrayScanlines+StringBundleResource.swift",
        "Bitmap+pngBundleResource.swift",
        "Bitmap+ppmBundleResource.swift",
        "BitmapDiffing.swift",
        "BitmapDownsampleTests.swift",
        "BitmapExporterTests.swift",
        "BitmapTests.swift",
        "CircleTest.swift",
        "ClampedTests.swift",
        "CoreTests.swift",
        "EllipseTests.swift",
        "ImageRunnerTests.swift",
        "LineTests.swift",
        "QuadraticBezierTests.swift",
        "RgbaTests.swift",
        "ScanlineTests.swift",
        "ShapeTypeTests.swift",
        "ShapeTypesTests.swift",
        "TriangleTests.swift",
        "bresenhamTests.swift"
      ],
      "target_dependencies" : [
        "Geometrize",
        "BitmapImportExport"
      ],
      "type" : "test"
    },
    {
      "c99name" : "geometrize_cli",
      "module_type" : "SwiftTarget",
      "name" : "geometrize-cli",
      "path" : "Sources/geometrize-cli",
      "product_dependencies" : [
        "ArgumentParser",
        "PNG",
        "JPEG"
      ],
      "product_memberships" : [
        "geometrize"
      ],
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Sources/geometrize-cli/PrivacyInfo.xcprivacy",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "Geometrize",
        "BitmapImportExport"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "Geometrize",
      "module_type" : "SwiftTarget",
      "name" : "Geometrize",
      "path" : "Sources/geometrize",
      "product_dependencies" : [
        "Algorithms"
      ],
      "product_memberships" : [
        "Geometrize",
        "BitmapImportExport",
        "geometrize"
      ],
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Sources/geometrize/PrivacyInfo.xcprivacy",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "BinaryInteger.swift",
        "Bitmap+UIImage.swift",
        "Bitmap.swift",
        "BitmapDifference.swift",
        "BitmapExporter.swift",
        "Bounds.swift",
        "EnergyFunction.swift",
        "FloatingPointExtension.swift",
        "GeometrizeModelBase.swift",
        "GeometrizeModelHillClimb.swift",
        "GeometrizingIterator.swift",
        "GeometrizingSequence.swift",
        "HillClimb.swift",
        "ImageRunner.swift",
        "Int_random.swift",
        "Point.swift",
        "Polygon.swift",
        "Rgba.swift",
        "SVGExporter.swift",
        "Scanline.swift",
        "ShapeAcceptancePrecondition.swift",
        "ShapeCreator.swift",
        "ShapeResult.swift",
        "Shapes/Circle.swift",
        "Shapes/Ellipse.swift",
        "Shapes/Line.swift",
        "Shapes/Polyline.swift",
        "Shapes/QuadraticBezier.swift",
        "Shapes/Rectangle.swift",
        "Shapes/RotatedEllipse.swift",
        "Shapes/RotatedRectangle.swift",
        "Shapes/Shape.swift",
        "Shapes/String-ShapeType.swift",
        "Shapes/Triangle.swift",
        "Shapes/allShapeTypes.swift",
        "SplitMix64.swift",
        "State.swift",
        "bresenham.swift",
        "mapShapeBoundsToImage.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "BitmapImportExport",
      "module_type" : "SwiftTarget",
      "name" : "BitmapImportExport",
      "path" : "Sources/bitmapImportExport",
      "product_dependencies" : [
        "PNG",
        "JPEG"
      ],
      "product_memberships" : [
        "BitmapImportExport",
        "geometrize"
      ],
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Sources/bitmapImportExport/PrivacyInfo.xcprivacy",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "Bitmap+JPEG.swift",
        "Bitmap+PNG.swift",
        "DestinationStream.swift",
        "JPEG.Data.Rectangular.swift",
        "SourceStream.swift"
      ],
      "target_dependencies" : [
        "Geometrize"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Fetching https://github.com/apple/swift-argument-parser.git
Fetching https://github.com/realm/SwiftLint.git
Fetching https://github.com/tayloraswift/jpeg.git
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[1/1] Compiling plugin SwiftLintCommandPlugin
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Building for debugging...
[3/36] Write sources
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[3/36] Write sources
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[9/36] Write sources
[19/36] Compiling _NumericsShims _NumericsShims.c
[20/36] Write swift-version-24593BA9C3E375BF.txt
[22/58] Emitting module SwiftJPEG
[23/59] Compiling RealModule ElementaryFunctions.swift
[24/60] Compiling RealModule Real.swift
[25/60] Emitting module ArgumentParserToolInfo
[26/60] Compiling ArgumentParserToolInfo ToolInfo.swift
[27/61] Compiling BaseDigits BaseDigits.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[28/61] Emitting module BaseDigits
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
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[29/61] Compiling RealModule Float16+Real.swift
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[34/62] Compiling RealModule AlgebraicField.swift
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[37/62] Compiling RealModule Double+Real.swift
[40/63] Wrapping AST for ArgumentParserToolInfo for debugging
[42/63] Compiling SwiftJPEG metadata.swift
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[44/63] Wrapping AST for BaseDigits for debugging
[45/63] Wrapping AST for RealModule for debugging
[47/131] Compiling Base16 Base16.UppercaseDigits.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[48/131] Compiling Base16 Base16.LowercaseDigits.swift
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<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[49/131] Emitting module Base16
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[50/131] Compiling Base16 Base16.Values.swift
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<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
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[51/131] Compiling Base16 Base16.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
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[52/132] Compiling SwiftJPEG encode.swift
[54/132] Compiling SwiftJPEG os.swift
[54/132] Wrapping AST for Base16 for debugging
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[62/137] Emitting module CRC
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[63/137] Compiling CRC CRC32.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[64/138] Wrapping AST for CRC for debugging
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[80/191] Compiling LZ77 Gzip.Format.swift
[81/191] Compiling LZ77 Gzip.Inflator.swift
[82/191] Compiling LZ77 Gzip.InflatorState.swift
[83/191] Compiling LZ77 LZ77.Decades.swift
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[89/197] Wrapping AST for Algorithms for debugging
[91/233] Compiling Geometrize BinaryInteger.swift
[92/233] Compiling Geometrize Bitmap+UIImage.swift
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/host/spi-builder-workspace/Sources/geometrize/Int_random.swift:7:5: warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 5 |
 6 | // swiftlint:disable:next identifier_name
 7 | var _randomImplementationReference = _randomImplementation
   |     |- warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert '_randomImplementationReference' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var '_randomImplementationReference' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 | // swiftlint:disable:next identifier_name
[99/245] Compiling Geometrize bresenham.swift
[100/245] Compiling Geometrize mapShapeBoundsToImage.swift
[101/245] Compiling Geometrize resource_bundle_accessor.swift
[102/245] Compiling ArgumentParser StringExtensions.swift
[103/245] Compiling ArgumentParser Tree.swift
[104/245] Compiling LZ77 LZ77.Reversed.swift
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[111/245] Compiling Geometrize GeometrizingSequence.swift
[112/245] Compiling Geometrize HillClimb.swift
[113/245] Compiling Geometrize ImageRunner.swift
[114/245] Compiling Geometrize Int_random.swift
[115/245] Compiling Geometrize ShapeAcceptancePrecondition.swift
[116/245] Compiling Geometrize EnergyFunction.swift
[117/245] Compiling Geometrize FloatingPointExtension.swift
[118/245] Compiling Geometrize GeometrizeModelBase.swift
[119/245] Compiling Geometrize GeometrizeModelHillClimb.swift
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[129/245] Compiling Geometrize Scanline.swift
[130/245] Compiling Geometrize Line.swift
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[132/245] Compiling Geometrize Shape.swift
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[134/245] Compiling Geometrize Triangle.swift
[135/245] Compiling Geometrize allShapeTypes.swift
[136/245] Compiling Geometrize SplitMix64.swift
[137/245] Compiling Geometrize State.swift
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/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:9: warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |         |- warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |         `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:18: warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |                  `- warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/Int_random.swift:7:5: warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 5 |
 6 | // swiftlint:disable:next identifier_name
 7 | var _randomImplementationReference = _randomImplementation
   |     |- warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert '_randomImplementationReference' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var '_randomImplementationReference' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 | // swiftlint:disable:next identifier_name
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:9: warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |         |- warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |         `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:18: warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |                  `- warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/Int_random.swift:7:5: warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 5 |
 6 | // swiftlint:disable:next identifier_name
 7 | var _randomImplementationReference = _randomImplementation
   |     |- warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert '_randomImplementationReference' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var '_randomImplementationReference' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 | // swiftlint:disable:next identifier_name
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:9: warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |         |- warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |         `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:18: warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |                  `- warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/Int_random.swift:7:5: warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 5 |
 6 | // swiftlint:disable:next identifier_name
 7 | var _randomImplementationReference = _randomImplementation
   |     |- warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert '_randomImplementationReference' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var '_randomImplementationReference' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 | // swiftlint:disable:next identifier_name
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:9: warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |         |- warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |         `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:18: warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |                  `- warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/Int_random.swift:7:5: warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 5 |
 6 | // swiftlint:disable:next identifier_name
 7 | var _randomImplementationReference = _randomImplementation
   |     |- warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert '_randomImplementationReference' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var '_randomImplementationReference' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 | // swiftlint:disable:next identifier_name
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:9: warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |         |- warning: capture of 'callback' with non-sendable type '(State) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |         `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/HillClimb.swift:54:18: warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |     )
 53 |     queue.async {
 54 |         callback(resState)
    |                  `- warning: capture of 'resState' with non-sendable type 'State' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |     }
 56 | }
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/Int_random.swift:7:5: warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 5 |
 6 | // swiftlint:disable:next identifier_name
 7 | var _randomImplementationReference = _randomImplementation
   |     |- warning: var '_randomImplementationReference' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert '_randomImplementationReference' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var '_randomImplementationReference' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 | // swiftlint:disable:next identifier_name
[202/246] Wrapping AST for ArgumentParser for debugging
[215/246] Compiling LZ77 LZ77.Metaword.swift
[216/246] Compiling LZ77 LZ77.RunLiteral.swift
[217/246] Compiling LZ77 LZ77.BlockMetadata.swift
[226/247] Compiling SwiftJPEG common.swift
[227/247] Compiling SwiftJPEG debug.swift
[228/247] Compiling SwiftJPEG decode.swift
[230/248] Wrapping AST for SwiftJPEG for debugging
[231/248] Wrapping AST for LZ77 for debugging
[233/292] Emitting module PNG
[234/292] Compiling PNG PNG.Gamma.swift
[235/292] Compiling PNG PNG.Header.swift
[236/292] Compiling PNG PNG.Histogram.swift
[237/292] Compiling PNG PNG.Palette.swift
[238/292] Compiling PNG PNG.ParsingError.swift
[239/292] Compiling PNG PNG.Percentmille.swift
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[245/298] Compiling PNG PNG.FormattingError.swift
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:41:38: warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 39 |             group.enter()
 40 |             concurrentQueue.async { [targetBitmap, currentBitmap] in
 41 |                 var buffer: Bitmap = currentBitmap
    |                                      `- warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:43:35: warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 41 |                 var buffer: Bitmap = currentBitmap
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
    |                                   |- warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                   `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 44 |                     alpha: alpha,
 45 |                     n: shapeCount,
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:47:29: warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 45 |                     n: shapeCount,
 46 |                     age: maxShapeMutations,
 47 |                     target: targetBitmap,
    |                             `- warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 48 |                     current: currentBitmap,
 49 |                     buffer: &buffer,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:51:37: warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 49 |                     buffer: &buffer,
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
    |                                     |- warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 52 |                     using: &generator,
 53 |                     callback: { state in
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/SplitMix64.swift:4:15: note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 2 |
 3 | // Borrowed https://github.com/apple/swift-argument-parser/blob/main/Examples/roll/SplitMix64.swift
 4 | public struct SplitMix64: RandomNumberGenerator {
   |               `- note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 5 |     private var state: UInt64
 6 |
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:41:38: warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 39 |             group.enter()
 40 |             concurrentQueue.async { [targetBitmap, currentBitmap] in
 41 |                 var buffer: Bitmap = currentBitmap
    |                                      `- warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:43:35: warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 41 |                 var buffer: Bitmap = currentBitmap
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
    |                                   |- warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                   `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 44 |                     alpha: alpha,
 45 |                     n: shapeCount,
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:47:29: warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 45 |                     n: shapeCount,
 46 |                     age: maxShapeMutations,
 47 |                     target: targetBitmap,
    |                             `- warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 48 |                     current: currentBitmap,
 49 |                     buffer: &buffer,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:51:37: warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 49 |                     buffer: &buffer,
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
    |                                     |- warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 52 |                     using: &generator,
 53 |                     callback: { state in
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/SplitMix64.swift:4:15: note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 2 |
 3 | // Borrowed https://github.com/apple/swift-argument-parser/blob/main/Examples/roll/SplitMix64.swift
 4 | public struct SplitMix64: RandomNumberGenerator {
   |               `- note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 5 |     private var state: UInt64
 6 |
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:41:38: warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 39 |             group.enter()
 40 |             concurrentQueue.async { [targetBitmap, currentBitmap] in
 41 |                 var buffer: Bitmap = currentBitmap
    |                                      `- warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:43:35: warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 41 |                 var buffer: Bitmap = currentBitmap
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
    |                                   |- warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                   `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 44 |                     alpha: alpha,
 45 |                     n: shapeCount,
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:47:29: warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 45 |                     n: shapeCount,
 46 |                     age: maxShapeMutations,
 47 |                     target: targetBitmap,
    |                             `- warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 48 |                     current: currentBitmap,
 49 |                     buffer: &buffer,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:51:37: warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 49 |                     buffer: &buffer,
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
    |                                     |- warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 52 |                     using: &generator,
 53 |                     callback: { state in
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/SplitMix64.swift:4:15: note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 2 |
 3 | // Borrowed https://github.com/apple/swift-argument-parser/blob/main/Examples/roll/SplitMix64.swift
 4 | public struct SplitMix64: RandomNumberGenerator {
   |               `- note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 5 |     private var state: UInt64
 6 |
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:41:38: warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 39 |             group.enter()
 40 |             concurrentQueue.async { [targetBitmap, currentBitmap] in
 41 |                 var buffer: Bitmap = currentBitmap
    |                                      `- warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:43:35: warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 41 |                 var buffer: Bitmap = currentBitmap
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
    |                                   |- warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                   `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 44 |                     alpha: alpha,
 45 |                     n: shapeCount,
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:47:29: warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 45 |                     n: shapeCount,
 46 |                     age: maxShapeMutations,
 47 |                     target: targetBitmap,
    |                             `- warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 48 |                     current: currentBitmap,
 49 |                     buffer: &buffer,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:51:37: warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 49 |                     buffer: &buffer,
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
    |                                     |- warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 52 |                     using: &generator,
 53 |                     callback: { state in
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/SplitMix64.swift:4:15: note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 2 |
 3 | // Borrowed https://github.com/apple/swift-argument-parser/blob/main/Examples/roll/SplitMix64.swift
 4 | public struct SplitMix64: RandomNumberGenerator {
   |               `- note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 5 |     private var state: UInt64
 6 |
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:41:38: warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 39 |             group.enter()
 40 |             concurrentQueue.async { [targetBitmap, currentBitmap] in
 41 |                 var buffer: Bitmap = currentBitmap
    |                                      `- warning: capture of 'currentBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:43:35: warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 41 |                 var buffer: Bitmap = currentBitmap
 42 |                 bestHillClimbState(
 43 |                     shapeCreator: shapeCreator,
    |                                   |- warning: capture of 'shapeCreator' with non-sendable type 'ShapeCreator' (aka '(inout SplitMix64) -> any Shape') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                   `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 44 |                     alpha: alpha,
 45 |                     n: shapeCount,
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:47:29: warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 45 |                     n: shapeCount,
 46 |                     age: maxShapeMutations,
 47 |                     target: targetBitmap,
    |                             `- warning: capture of 'targetBitmap' with non-sendable type 'Bitmap' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 48 |                     current: currentBitmap,
 49 |                     buffer: &buffer,
/host/spi-builder-workspace/Sources/geometrize/Bitmap.swift:5:15: note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  3 | /// Helper for working with bitmap data.
  4 | /// Pixels are ordered line by line, like arrays in C.
  5 | public struct Bitmap { // swiftlint:disable:this type_body_length
    |               `- note: consider making struct 'Bitmap' conform to the 'Sendable' protocol
  6 |
  7 |     /// Creates useless empty bitmap.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:51:37: warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
 49 |                     buffer: &buffer,
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
    |                                     |- warning: capture of 'energyFunction' with non-sendable type 'EnergyFunction' (aka '(Array<Scanline>, UInt8, Bitmap, Bitmap, inout Bitmap, Double) -> Double') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 52 |                     using: &generator,
 53 |                     callback: { state in
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: capture of 'generator' with non-sendable type 'SplitMix64' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/SplitMix64.swift:4:15: note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 2 |
 3 | // Borrowed https://github.com/apple/swift-argument-parser/blob/main/Examples/roll/SplitMix64.swift
 4 | public struct SplitMix64: RandomNumberGenerator {
   |               `- note: consider making struct 'SplitMix64' conform to the 'Sendable' protocol
 5 |     private var state: UInt64
 6 |
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:52:29: warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 50 |                     lastScore: lastScore,
 51 |                     energyFunction: energyFunction,
 52 |                     using: &generator,
    |                             `- warning: mutation of captured var 'generator' in concurrently-executing code; this is an error in the Swift 6 language mode
 53 |                     callback: { state in
 54 |                         states.append(state)
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: capture of 'states' with non-sendable type '[State]' in an isolated closure; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
/host/spi-builder-workspace/Sources/geometrize/State.swift:3:8: note: consider making struct 'State' conform to the 'Sendable' protocol
 1 | import Foundation
 2 |
 3 | struct State {
   |        `- note: consider making struct 'State' conform to the 'Sendable' protocol
 4 |
 5 |     /// Creates a new state.
/host/spi-builder-workspace/Sources/geometrize/GeometrizeModelHillClimb.swift:54:25: warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 52 |                     using: &generator,
 53 |                     callback: { state in
 54 |                         states.append(state)
    |                         `- warning: mutation of captured var 'states' in concurrently-executing code; this is an error in the Swift 6 language mode
 55 |                         group.leave()
 56 |                     },
[256/299] Compiling PNG PNG.TimeModified.swift
[257/299] Compiling PNG PNG.Transparency.Case.swift
[258/299] Compiling PNG PNG.Transparency.swift
[259/299] Compiling PNG System.swift
[260/299] Compiling PNG UnsafeMutableBufferPointer (ext).swift
[261/299] Compiling PNG __Entrypoint.swift
[263/299] Compiling PNG PNG.swift
[264/299] Compiling PNG PNG.Background.Case.swift
[265/299] Compiling PNG PNG.Background.swift
[266/299] Compiling PNG PNG.Chromaticity.swift
[267/299] Compiling PNG PNG.ColorProfile.swift
[268/299] Compiling PNG PNG.ColorRendering.swift
[268/299] Wrapping AST for Geometrize for debugging
[270/299] Compiling PNG PNG.PhysicalDimensions.swift
[271/299] Compiling PNG PNG.SignificantBits.Case.swift
[272/299] Compiling PNG PNG.SignificantBits.swift
[273/299] Compiling PNG PNG.SuggestedPalette.Entries.swift
[274/299] Compiling PNG PNG.SuggestedPalette.swift
[275/299] Compiling PNG PNG.Text.swift
[276/299] Compiling PNG Array (ext).swift
[277/299] Compiling PNG ArraySlice (ext).swift
[278/299] Compiling PNG PNG.Color.swift
[279/299] Compiling PNG PNG.RGBA.swift
[280/299] Compiling PNG PNG.VA.swift
[281/299] Compiling PNG PNG.Context.swift
[282/299] Compiling PNG PNG.Decoder.swift
[283/299] Compiling PNG PNG.Format.Pixel.swift
[284/299] Compiling PNG PNG.Format.swift
[285/299] Compiling PNG PNG.Layout.swift
[286/299] Compiling PNG General.swift
[287/299] Compiling PNG LZ77.DecompressionError (ext).swift
[288/299] Compiling PNG LZ77.DeflateHeaderError (ext).swift
[289/299] Compiling PNG PNG.BytestreamDestination.swift
[290/299] Compiling PNG PNG.BytestreamSource.swift
[291/299] Compiling PNG PNG.Chunk.swift
[292/299] Compiling PNG PNG.LexingError.swift
[293/299] Compiling PNG PNG.Error.swift
[294/299] Compiling PNG PNG.Image.swift
[295/300] Wrapping AST for PNG for debugging
[297/307] Compiling BitmapImportExport DestinationStream.swift
[298/307] Compiling BitmapImportExport resource_bundle_accessor.swift
[299/307] Compiling BitmapImportExport SourceStream.swift
[300/307] Compiling BitmapImportExport JPEG.Data.Rectangular.swift
[301/307] Compiling BitmapImportExport Bitmap+PNG.swift
[302/307] Compiling BitmapImportExport Bitmap+JPEG.swift
[303/307] Emitting module BitmapImportExport
[304/308] Wrapping AST for BitmapImportExport for debugging
[306/311] Emitting module geometrize_cli
[307/311] Compiling geometrize_cli resource_bundle_accessor.swift
[308/311] Compiling geometrize_cli main.swift
[309/312] Wrapping AST for geometrize-cli for debugging
[310/312] Write Objects.LinkFileList
[311/312] Linking geometrize
Build complete! (106.23s)
Build complete.
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      "sources" : [
        "ArrayScanlines+StringBundleResource.swift",
        "Bitmap+pngBundleResource.swift",
        "Bitmap+ppmBundleResource.swift",
        "BitmapDiffing.swift",
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        "BitmapExporterTests.swift",
        "BitmapTests.swift",
        "CircleTest.swift",
        "ClampedTests.swift",
        "CoreTests.swift",
        "EllipseTests.swift",
        "ImageRunnerTests.swift",
        "LineTests.swift",
        "QuadraticBezierTests.swift",
        "RgbaTests.swift",
        "ScanlineTests.swift",
        "ShapeTypeTests.swift",
        "ShapeTypesTests.swift",
        "TriangleTests.swift",
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basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.