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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 2.0.0 (0423de), with Swift 6.1 for Linux on 28 Apr 2025 23:58:47 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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/heroesofcode/DataLife.git
Reference: 2.0.0
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/heroesofcode/DataLife
 * tag               2.0.0      -> FETCH_HEAD
HEAD is now at 0423de2 Bump version to 2.0.0
Cloned https://github.com/heroesofcode/DataLife.git
Revision (git rev-parse @):
0423de231afac9163d21437515fd3adb39639d00
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/heroesofcode/DataLife.git at 2.0.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/heroesofcode/DataLife.git
https://github.com/heroesofcode/DataLife.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DataLife",
  "name" : "DataLife",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "tvos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "DataLife",
      "targets" : [
        "DataLife"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DataLifeTests",
      "module_type" : "SwiftTarget",
      "name" : "DataLifeTests",
      "path" : "Tests/DataLifeTests",
      "sources" : [
        "DataLifeTests.swift",
        "ViewModel.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DataLife"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DataLife",
      "module_type" : "SwiftTarget",
      "name" : "DataLife",
      "path" : "Sources/DataLife",
      "product_memberships" : [
        "DataLife"
      ],
      "sources" : [
        "DataLife.swift",
        "DataLifeViewModel.swift",
        "ObserverProtocol.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
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! (5.81s)
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.