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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

Failed to build DidUpdate, reference 0.12.1 (3fc88f), with Swift 6.1 for Linux on 30 Apr 2025 12:35:28 UTC.

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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/PimCoumans/DidUpdate.git
Reference: 0.12.1
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/PimCoumans/DidUpdate
 * tag               0.12.1     -> FETCH_HEAD
HEAD is now at 3fc88f1 Move down Codable initializer
Cloned https://github.com/PimCoumans/DidUpdate.git
Revision (git rev-parse @):
3fc88f18ccfca134a0b60f4b85e2379b5d23f5af
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/PimCoumans/DidUpdate.git at 0.12.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/PimCoumans/DidUpdate.git
https://github.com/PimCoumans/DidUpdate.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DidUpdate",
  "name" : "DidUpdate",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DidUpdate",
      "targets" : [
        "DidUpdate"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DidUpdateTests",
      "module_type" : "SwiftTarget",
      "name" : "DidUpdateTests",
      "path" : "Tests/DidUpdateTests",
      "sources" : [
        "ViewModelStateTests.swift"
      ],
      "target_dependencies" : [
        "DidUpdate"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DidUpdate",
      "module_type" : "SwiftTarget",
      "name" : "DidUpdate",
      "path" : "Sources/DidUpdate",
      "product_memberships" : [
        "DidUpdate"
      ],
      "sources" : [
        "Observers/StateObserver.swift",
        "Observers/StateValueObserver.swift",
        "Property Wrappers/ExternallyUpdating.swift",
        "Property Wrappers/ObservedState.swift",
        "Property Wrappers/ObservedValue.swift",
        "Property Wrappers/ReadOnlyProxy+compound.swift",
        "Property Wrappers/ReadOnlyProxy.swift",
        "Property Wrappers/StoredValue.swift",
        "Property Wrappers/ValueProxy.swift",
        "Property Wrappers/WeakReadOnlyProxy.swift",
        "Property Wrappers/WeakValueProxy.swift",
        "Protocols/ObservableState.swift",
        "Protocols/UpdateObservable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
[3/15] Compiling DidUpdate ValueProxy.swift
[4/15] Compiling DidUpdate WeakReadOnlyProxy.swift
[5/16] Compiling DidUpdate WeakValueProxy.swift
[6/16] Compiling DidUpdate UpdateObservable.swift
[7/16] Compiling DidUpdate ReadOnlyProxy.swift
[8/16] Compiling DidUpdate StoredValue.swift
[9/16] Compiling DidUpdate ObservableState.swift
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:68:13: warning: let 'key' is not concurrency-safe because non-'Sendable' type 'UnsafeMutableRawPointer' may have shared mutable state; this is an error in the Swift 6 language mode
 66 | }
 67 |
 68 | private let key = malloc(1)!
    |             |- warning: let 'key' is not concurrency-safe because non-'Sendable' type 'UnsafeMutableRawPointer' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'key' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 69 |
 70 | extension ObservableState {
Swift.UnsafeMutableRawPointer:1:23: note: struct 'UnsafeMutableRawPointer' does not conform to the 'Sendable' protocol
1 | @frozen public struct UnsafeMutableRawPointer : _Pointer {
  |                       `- note: struct 'UnsafeMutableRawPointer' does not conform to the 'Sendable' protocol
2 |     public typealias Pointee = UInt8
3 |     public let _rawValue: Builtin.RawPointer
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:72:24: error: cannot find 'objc_getAssociatedObject' in scope
 70 | extension ObservableState {
 71 | 	public var stateObserver: StateObserver {
 72 | 		guard let observer = objc_getAssociatedObject(self, key) as? StateObserver else {
    |                        `- error: cannot find 'objc_getAssociatedObject' in scope
 73 | 			let observer = StateObserver()
 74 | 			objc_setAssociatedObject(self, key, observer, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:74:4: error: cannot find 'objc_setAssociatedObject' in scope
 72 | 		guard let observer = objc_getAssociatedObject(self, key) as? StateObserver else {
 73 | 			let observer = StateObserver()
 74 | 			objc_setAssociatedObject(self, key, observer, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
    |    `- error: cannot find 'objc_setAssociatedObject' in scope
 75 | 			return observer
 76 | 		}
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:74:51: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
 72 | 		guard let observer = objc_getAssociatedObject(self, key) as? StateObserver else {
 73 | 			let observer = StateObserver()
 74 | 			objc_setAssociatedObject(self, key, observer, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
    |                                                   `- error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
 75 | 			return observer
 76 | 		}
[10/16] Emitting module DidUpdate
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:68:13: warning: let 'key' is not concurrency-safe because non-'Sendable' type 'UnsafeMutableRawPointer' may have shared mutable state; this is an error in the Swift 6 language mode
 66 | }
 67 |
 68 | private let key = malloc(1)!
    |             |- warning: let 'key' is not concurrency-safe because non-'Sendable' type 'UnsafeMutableRawPointer' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'key' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 69 |
 70 | extension ObservableState {
Swift.UnsafeMutableRawPointer:1:23: note: struct 'UnsafeMutableRawPointer' does not conform to the 'Sendable' protocol
1 | @frozen public struct UnsafeMutableRawPointer : _Pointer {
  |                       `- note: struct 'UnsafeMutableRawPointer' does not conform to the 'Sendable' protocol
2 |     public typealias Pointee = UInt8
3 |     public let _rawValue: Builtin.RawPointer
[11/16] Compiling DidUpdate ExternallyUpdating.swift
[12/16] Compiling DidUpdate ObservedState.swift
[13/16] Compiling DidUpdate ObservedValue.swift
[14/16] Compiling DidUpdate ReadOnlyProxy+compound.swift
[15/16] Compiling DidUpdate StateObserver.swift
[16/16] Compiling DidUpdate StateValueObserver.swift
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 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
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/14] Compiling DidUpdate ObservableState.swift
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:72:24: error: cannot find 'objc_getAssociatedObject' in scope
 70 | extension ObservableState {
 71 | 	public var stateObserver: StateObserver {
 72 | 		guard let observer = objc_getAssociatedObject(self, key) as? StateObserver else {
    |                        `- error: cannot find 'objc_getAssociatedObject' in scope
 73 | 			let observer = StateObserver()
 74 | 			objc_setAssociatedObject(self, key, observer, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:74:4: error: cannot find 'objc_setAssociatedObject' in scope
 72 | 		guard let observer = objc_getAssociatedObject(self, key) as? StateObserver else {
 73 | 			let observer = StateObserver()
 74 | 			objc_setAssociatedObject(self, key, observer, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
    |    `- error: cannot find 'objc_setAssociatedObject' in scope
 75 | 			return observer
 76 | 		}
/host/spi-builder-workspace/Sources/DidUpdate/Protocols/ObservableState.swift:74:51: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
 72 | 		guard let observer = objc_getAssociatedObject(self, key) as? StateObserver else {
 73 | 			let observer = StateObserver()
 74 | 			objc_setAssociatedObject(self, key, observer, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
    |                                                   `- error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
 75 | 			return observer
 76 | 		}
[3/14] Compiling DidUpdate WeakValueProxy.swift
[4/15] Compiling DidUpdate ObservedValue.swift
[5/15] Compiling DidUpdate ReadOnlyProxy+compound.swift
[6/15] Compiling DidUpdate ExternallyUpdating.swift
[7/15] Compiling DidUpdate ObservedState.swift
[8/15] Emitting module DidUpdate
[9/15] Compiling DidUpdate StateObserver.swift
[10/15] Compiling DidUpdate StateValueObserver.swift
[11/15] Compiling DidUpdate ValueProxy.swift
[12/15] Compiling DidUpdate WeakReadOnlyProxy.swift
[13/15] Compiling DidUpdate ReadOnlyProxy.swift
[14/15] Compiling DidUpdate StoredValue.swift
[15/15] Compiling DidUpdate UpdateObservable.swift
BUILD FAILURE 6.1 linux