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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 CalendarDate with Swift 6.0 for Linux.

Swift 6 data race errors: 1

Build Command

bash -c docker run --rm -v "checkouts-4606859-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/raymondjavaxx/CalendarDate.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/raymondjavaxx/CalendarDate
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 106eb2a Version bump (#12)
Cloned https://github.com/raymondjavaxx/CalendarDate.git
Revision (git rev-parse @):
106eb2ac20512a2bb3ea648c7fa295d9daf48d83
SPI manifest file found: $workDir/.spi.yml
SUCCESS checkout https://github.com/raymondjavaxx/CalendarDate.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $workDir
https://github.com/raymondjavaxx/CalendarDate.git
Running build ...
bash -c docker run --rm -v "checkouts-4606859-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/8] Compiling CalendarDate Parser.swift
[4/8] Compiling CalendarDate CalendarTime.swift
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:29:16: warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                `- warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
30 | }
31 |
Foundation.Calendar:1:15: note: struct 'Calendar' does not conform to the 'Sendable' protocol
  1 | public struct Calendar : Hashable, Equatable, ReferenceConvertible {
    |               `- note: struct 'Calendar' does not conform to the 'Sendable' protocol
  2 |     public typealias ReferenceType = NSCalendar
  3 |     public enum Identifier {
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:26:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
24 | //
25 |
26 | import Foundation
   | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                |- note: annotate 'gregorian' with '@MainActor' if property should only be accessed from the main actor
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 | }
31 |
[5/8] Compiling CalendarDate CalendarDate.swift
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:29:16: warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                `- warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
30 | }
31 |
Foundation.Calendar:1:15: note: struct 'Calendar' does not conform to the 'Sendable' protocol
  1 | public struct Calendar : Hashable, Equatable, ReferenceConvertible {
    |               `- note: struct 'Calendar' does not conform to the 'Sendable' protocol
  2 |     public typealias ReferenceType = NSCalendar
  3 |     public enum Identifier {
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:26:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
24 | //
25 |
26 | import Foundation
   | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                |- note: annotate 'gregorian' with '@MainActor' if property should only be accessed from the main actor
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 | }
31 |
[6/8] Compiling CalendarDate Calendar+Utils.swift
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:29:16: warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                `- warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
30 | }
31 |
Foundation.Calendar:1:15: note: struct 'Calendar' does not conform to the 'Sendable' protocol
  1 | public struct Calendar : Hashable, Equatable, ReferenceConvertible {
    |               `- note: struct 'Calendar' does not conform to the 'Sendable' protocol
  2 |     public typealias ReferenceType = NSCalendar
  3 |     public enum Identifier {
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:26:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
24 | //
25 |
26 | import Foundation
   | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                |- note: annotate 'gregorian' with '@MainActor' if property should only be accessed from the main actor
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 | }
31 |
[7/8] Emitting module CalendarDate
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:29:16: warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                `- warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
30 | }
31 |
Foundation.Calendar:1:15: note: struct 'Calendar' does not conform to the 'Sendable' protocol
  1 | public struct Calendar : Hashable, Equatable, ReferenceConvertible {
    |               `- note: struct 'Calendar' does not conform to the 'Sendable' protocol
  2 |     public typealias ReferenceType = NSCalendar
  3 |     public enum Identifier {
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:26:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
24 | //
25 |
26 | import Foundation
   | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                |- note: annotate 'gregorian' with '@MainActor' if property should only be accessed from the main actor
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 | }
31 |
[8/8] Compiling CalendarDate CalendarDateTime.swift
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:29:16: warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                `- warning: static property 'gregorian' is not concurrency-safe because non-'Sendable' type 'Calendar' may have shared mutable state; this is an error in the Swift 6 language mode
30 | }
31 |
Foundation.Calendar:1:15: note: struct 'Calendar' does not conform to the 'Sendable' protocol
  1 | public struct Calendar : Hashable, Equatable, ReferenceConvertible {
    |               `- note: struct 'Calendar' does not conform to the 'Sendable' protocol
  2 |     public typealias ReferenceType = NSCalendar
  3 |     public enum Identifier {
/host/spi-builder-workspace/Sources/CalendarDate/Calendar+Utils.swift:26:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
24 | //
25 |
26 | import Foundation
   | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
27 |
28 | extension Calendar {
29 |     static let gregorian = Calendar(identifier: .gregorian)
   |                |- note: annotate 'gregorian' with '@MainActor' if property should only be accessed from the main actor
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 | }
31 |
Build complete! (8.33s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CalendarDate",
  "name" : "CalendarDate",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CalendarDate",
      "targets" : [
        "CalendarDate"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CalendarDateTests",
      "module_type" : "SwiftTarget",
      "name" : "CalendarDateTests",
      "path" : "Tests/CalendarDateTests",
      "sources" : [
        "CalendarDateTests.swift",
        "CalendarDateTimeTests.swift",
        "CalendarTimeTests.swift",
        "CodableTests.swift",
        "ParserTests.swift"
      ],
      "target_dependencies" : [
        "CalendarDate"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CalendarDate",
      "module_type" : "SwiftTarget",
      "name" : "CalendarDate",
      "path" : "Sources/CalendarDate",
      "product_memberships" : [
        "CalendarDate"
      ],
      "sources" : [
        "Calendar+Utils.swift",
        "CalendarDate.swift",
        "CalendarDateTime.swift",
        "CalendarTime.swift",
        "Parser.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.