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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 PropertyBased, reference 0.1.0 (fdae55), with Swift 6.1 for Linux on 6 May 2025 15:13:57 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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: 4.61.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/x-sheep/swift-property-based.git
Reference: 0.1.0
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/x-sheep/swift-property-based
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at fdae553 Add tests for propertyCheck function
Cloned https://github.com/x-sheep/swift-property-based.git
Revision (git rev-parse @):
fdae553f6185d5f8f98eb87146002663dbe3f6c7
SUCCESS checkout https://github.com/x-sheep/swift-property-based.git at 0.1.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/x-sheep/swift-property-based.git
https://github.com/x-sheep/swift-property-based.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.1.0 but the installed version is 6.0.2
error: fatalError
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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/pointfreeco/swift-gen.git
[1/712] Fetching swift-gen
Fetched https://github.com/pointfreeco/swift-gen.git from cache (0.20s)
Computing version for https://github.com/pointfreeco/swift-gen.git
Computed https://github.com/pointfreeco/swift-gen.git at 0.4.0 (2.30s)
Creating working copy for https://github.com/pointfreeco/swift-gen.git
Working copy of https://github.com/pointfreeco/swift-gen.git resolved at 0.4.0
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
[4/10] Compiling Gen Gen.swift
[5/10] Emitting module Gen
[6/10] Compiling Gen AnyRandomNumberGenerator.swift
[7/10] Compiling Gen LCRNG.swift
[8/10] Compiling Gen UIKit.swift
[9/10] Compiling Gen Xoshiro.swift
[10/10] Compiling Gen Zip.swift
[12/18] Compiling PropertyBased SeededRandomNumberGenerator.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
[13/18] Compiling PropertyBased PropertyCheck.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
[14/18] Compiling PropertyBased Xoshiro+SeededRandomNumberGenerator.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
[15/18] Compiling PropertyBased FixedSeedTrait.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
[16/18] Compiling PropertyBased IssueCounting.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
[17/18] Emitting module PropertyBased
<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
[18/18] Compiling PropertyBased Mutex.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
Build complete! (10.43s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-gen",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.4.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-gen.git"
    }
  ],
  "manifest_display_name" : "PropertyBased",
  "name" : "PropertyBased",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "PropertyBased",
      "targets" : [
        "PropertyBased"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PropertyBasedTests",
      "module_type" : "SwiftTarget",
      "name" : "PropertyBasedTests",
      "path" : "Tests/PropertyBasedTests",
      "sources" : [
        "FixedSeedTests.swift",
        "IntegerAdditionTests.swift",
        "PropertyCheckTests.swift",
        "Utils.swift"
      ],
      "target_dependencies" : [
        "PropertyBased"
      ],
      "type" : "test"
    },
    {
      "c99name" : "PropertyBased",
      "module_type" : "SwiftTarget",
      "name" : "PropertyBased",
      "path" : "Sources/PropertyBased",
      "product_dependencies" : [
        "Gen"
      ],
      "product_memberships" : [
        "PropertyBased"
      ],
      "sources" : [
        "FixedSeedTrait.swift",
        "IssueCounting.swift",
        "Mutex.swift",
        "PropertyCheck.swift",
        "SeededRandomNumberGenerator.swift",
        "Xoshiro+SeededRandomNumberGenerator.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.1"
}
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
Done.