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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 package-histogram, reference 0.1.3 (93a161), with Swift 6.1 for Linux on 30 Apr 2025 16:03:10 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/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: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/HdrHistogram/hdrhistogram-swift.git
Reference: 0.1.3
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/HdrHistogram/hdrhistogram-swift
 * tag               0.1.3      -> FETCH_HEAD
HEAD is now at 93a1618 add Sendable conformance (#27)
Cloned https://github.com/HdrHistogram/hdrhistogram-swift.git
Revision (git rev-parse @):
93a1618c8aa20f6a521a9da656a3e0591889e9dc
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/HdrHistogram/hdrhistogram-swift.git at 0.1.3
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/HdrHistogram/hdrhistogram-swift.git
https://github.com/HdrHistogram/hdrhistogram-swift.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "swift-numerics",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-numerics"
    },
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.4.3",
            "upper_bound" : "2.0.0"
          }
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      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "package-histogram",
  "name" : "package-histogram",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
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      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "Histogram",
      "targets" : [
        "Histogram"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "HistogramExample",
      "targets" : [
        "HistogramExample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HistogramTests",
      "module_type" : "SwiftTarget",
      "name" : "HistogramTests",
      "path" : "Tests/HistogramTests",
      "product_dependencies" : [
        "Numerics"
      ],
      "sources" : [
        "HistogramAutosizingTests.swift",
        "HistogramDataAccessTests.swift",
        "HistogramTests.swift"
      ],
      "target_dependencies" : [
        "Histogram"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HistogramExample",
      "module_type" : "SwiftTarget",
      "name" : "HistogramExample",
      "path" : "Sources/HistogramExample",
      "product_memberships" : [
        "HistogramExample"
      ],
      "sources" : [
        "HistogramExample.swift"
      ],
      "target_dependencies" : [
        "Histogram"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "Histogram",
      "module_type" : "SwiftTarget",
      "name" : "Histogram",
      "path" : "Sources/Histogram",
      "product_dependencies" : [
        "Numerics"
      ],
      "product_memberships" : [
        "Histogram",
        "HistogramExample"
      ],
      "sources" : [
        "Histogram.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/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-numerics
Fetching https://github.com/apple/swift-docc-plugin
[1/5674] Fetching swift-numerics
[1363/7723] Fetching swift-numerics, swift-docc-plugin
Fetched https://github.com/apple/swift-numerics from cache (0.63s)
Fetched https://github.com/apple/swift-docc-plugin from cache (0.65s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (1.65s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3376] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.64s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.82s)
Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.0.3 (0.92s)
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/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/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.0.3
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/16] Write sources
[7/16] Compiling _NumericsShims _NumericsShims.c
[8/16] Write swift-version-24593BA9C3E375BF.txt
[10/26] Compiling RealModule AlgebraicField.swift
[11/26] Compiling RealModule ApproximateEquality.swift
[12/26] Emitting module RealModule
[13/26] Compiling RealModule AugmentedArithmetic.swift
[14/26] Compiling RealModule Double+Real.swift
[15/27] Compiling RealModule RealFunctions.swift
[16/27] Compiling RealModule Real.swift
[17/27] Compiling RealModule Float+Real.swift
[18/27] Compiling RealModule ElementaryFunctions.swift
[19/27] Compiling RealModule Float80+Real.swift
[20/27] Compiling RealModule Float16+Real.swift
[21/28] Wrapping AST for RealModule for debugging
[23/33] Compiling ComplexModule ElementaryFunctions.swift
[24/33] Emitting module ComplexModule
[25/33] Compiling ComplexModule Complex.swift
[26/33] Compiling ComplexModule Arithmetic.swift
[27/33] Compiling ComplexModule Differentiable.swift
[28/34] Wrapping AST for ComplexModule for debugging
[30/36] Compiling Numerics Numerics.swift
[31/36] Emitting module Numerics
[32/37] Wrapping AST for Numerics for debugging
[34/39] Emitting module Histogram
[35/39] Compiling Histogram Histogram.swift
[36/40] Wrapping AST for Histogram for debugging
[38/42] Compiling HistogramExample HistogramExample.swift
[39/42] Emitting module HistogramExample
[40/43] Wrapping AST for HistogramExample for debugging
[41/43] Write Objects.LinkFileList
[42/43] Linking HistogramExample
Build complete! (26.89s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-numerics",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-numerics"
    },
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.4.3",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "package-histogram",
  "name" : "package-histogram",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
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      "name" : "macos",
      "version" : "10.15"
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      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "Histogram",
      "targets" : [
        "Histogram"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "HistogramExample",
      "targets" : [
        "HistogramExample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HistogramTests",
      "module_type" : "SwiftTarget",
      "name" : "HistogramTests",
      "path" : "Tests/HistogramTests",
      "product_dependencies" : [
        "Numerics"
      ],
      "sources" : [
        "HistogramAutosizingTests.swift",
        "HistogramDataAccessTests.swift",
        "HistogramTests.swift"
      ],
      "target_dependencies" : [
        "Histogram"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HistogramExample",
      "module_type" : "SwiftTarget",
      "name" : "HistogramExample",
      "path" : "Sources/HistogramExample",
      "product_memberships" : [
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      ],
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        "HistogramExample.swift"
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        "Histogram"
      ],
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      "module_type" : "SwiftTarget",
      "name" : "Histogram",
      "path" : "Sources/Histogram",
      "product_dependencies" : [
        "Numerics"
      ],
      "product_memberships" : [
        "Histogram",
        "HistogramExample"
      ],
      "sources" : [
        "Histogram.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
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.