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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 DataLife, reference master (54474d), with Swift 6.1 for Linux on 1 May 2025 14:14:26 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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/heroesofcode/DataLife.git
Reference: master
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/heroesofcode/DataLife
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 54474d2 Update MeilCli/danger-action action to v6.0.28 (#111)
Cloned https://github.com/heroesofcode/DataLife.git
Revision (git rev-parse @):
54474d26be45e8fb324001835aa9c29cee902994
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/heroesofcode/DataLife.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/heroesofcode/DataLife.git
https://github.com/heroesofcode/DataLife.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DataLife",
  "name" : "DataLife",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "tvos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "DataLife",
      "targets" : [
        "DataLife"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DataLifeTests",
      "module_type" : "SwiftTarget",
      "name" : "DataLifeTests",
      "path" : "Tests/DataLifeTests",
      "sources" : [
        "DataLifeTests.swift",
        "ViewModel.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DataLife"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DataLife",
      "module_type" : "SwiftTarget",
      "name" : "DataLife",
      "path" : "Sources/DataLife",
      "product_memberships" : [
        "DataLife"
      ],
      "sources" : [
        "DataLife.swift",
        "DataLifeViewModel.swift",
        "ObserverProtocol.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/6] Compiling DataLife DataLifeViewModel.swift
[4/6] Compiling DataLife ObserverProtocol.swift
[5/6] Emitting module DataLife
[6/6] Compiling DataLife DataLife.swift
/host/spi-builder-workspace/Sources/DataLife/DataLife.swift:22:13: warning: capture of 'self' with non-sendable type 'DataLife<T>' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 1 | import Foundation
 2 |
 3 | public class DataLife<T> {
   |              `- note: generic class 'DataLife' does not conform to the 'Sendable' protocol
 4 |
 5 |     public typealias CompletionHandler = (T) -> Void
   :
20 |
21 |         queue.async(flags: .barrier) {
22 |             self.observers[id] = completion
   |             `- warning: capture of 'self' with non-sendable type 'DataLife<T>' in a '@Sendable' closure; this is an error in the Swift 6 language mode
23 |         }
24 |     }
/host/spi-builder-workspace/Sources/DataLife/DataLife.swift:22:34: warning: capture of 'completion' with non-sendable type 'DataLife<T>.CompletionHandler' (aka '(T) -> ()') in a '@Sendable' closure; this is an error in the Swift 6 language mode
20 |
21 |         queue.async(flags: .barrier) {
22 |             self.observers[id] = completion
   |                                  |- warning: capture of 'completion' with non-sendable type 'DataLife<T>.CompletionHandler' (aka '(T) -> ()') 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'
23 |         }
24 |     }
/host/spi-builder-workspace/Sources/DataLife/DataLife.swift:28:13: warning: capture of 'self' with non-sendable type 'DataLife<T>' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 1 | import Foundation
 2 |
 3 | public class DataLife<T> {
   |              `- note: generic class 'DataLife' does not conform to the 'Sendable' protocol
 4 |
 5 |     public typealias CompletionHandler = (T) -> Void
   :
26 |     public func removeObserver(_ observer: ObserverProtocol) {
27 |         queue.async(flags: .barrier) {
28 |             self.observers.removeValue(forKey: observer.id)
   |             `- warning: capture of 'self' with non-sendable type 'DataLife<T>' in a '@Sendable' closure; this is an error in the Swift 6 language mode
29 |         }
30 |     }
/host/spi-builder-workspace/Sources/DataLife/DataLife.swift:28:48: warning: capture of 'observer' with non-sendable type 'any ObserverProtocol' in a '@Sendable' closure; this is an error in the Swift 6 language mode
26 |     public func removeObserver(_ observer: ObserverProtocol) {
27 |         queue.async(flags: .barrier) {
28 |             self.observers.removeValue(forKey: observer.id)
   |                                                `- warning: capture of 'observer' with non-sendable type 'any ObserverProtocol' in a '@Sendable' closure; this is an error in the Swift 6 language mode
29 |         }
30 |     }
/host/spi-builder-workspace/Sources/DataLife/ObserverProtocol.swift:3:17: note: protocol 'ObserverProtocol' does not conform to the 'Sendable' protocol
1 | import Foundation
2 |
3 | public protocol ObserverProtocol: AnyObject {
  |                 `- note: protocol 'ObserverProtocol' does not conform to the 'Sendable' protocol
4 |     var id: UUID { get set }
5 |     func onValueChanged(_ value: Any?)
Build complete! (6.43s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DataLife",
  "name" : "DataLife",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "tvos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "DataLife",
      "targets" : [
        "DataLife"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DataLifeTests",
      "module_type" : "SwiftTarget",
      "name" : "DataLifeTests",
      "path" : "Tests/DataLifeTests",
      "sources" : [
        "DataLifeTests.swift",
        "ViewModel.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DataLife"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DataLife",
      "module_type" : "SwiftTarget",
      "name" : "DataLife",
      "path" : "Sources/DataLife",
      "product_memberships" : [
        "DataLife"
      ],
      "sources" : [
        "DataLife.swift",
        "DataLifeViewModel.swift",
        "ObserverProtocol.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
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.