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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 AnyDate, reference master (dd54e6), with Swift 6.0 for macOS (SPM) on 31 Oct 2024 21:36:01 UTC.

Swift 6 data race errors: 2

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Kawoou/AnyDate.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Kawoou/AnyDate
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at dd54e6c Update swift badge
Cloned https://github.com/Kawoou/AnyDate.git
Revision (git rev-parse @):
dd54e6c2b2d5bc8ea64f5088ca0e37d34b47bc9f
SUCCESS checkout https://github.com/Kawoou/AnyDate.git at master
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "anydate",
      "name": "AnyDate",
      "url": "https://github.com/Kawoou/AnyDate.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/AnyDate",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/Kawoou/AnyDate.git
[1/597] Fetching anydate
Fetched https://github.com/Kawoou/AnyDate.git from cache (1.02s)
Creating working copy for https://github.com/Kawoou/AnyDate.git
Working copy of https://github.com/Kawoou/AnyDate.git resolved at master (dd54e6c)
warning: '.resolve-product-dependencies': dependency 'anydate' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/Kawoou/AnyDate.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/12] Compiling AnyDate LocalDate.swift
[4/12] Compiling AnyDate ZonedDateTime.swift
[5/12] Compiling AnyDate Period.swift
/Users/admin/builder/spi-builder-workspace/Sources/AnyDate/Period.swift:93:13: warning: variable 'newDate' was never mutated; consider changing to 'let' constant
 91 |         let days = day + dayAppend
 92 |
 93 |         var newDate = LocalDate(year: year, month: month + 1, day: days + 1)
    |             `- warning: variable 'newDate' was never mutated; consider changing to 'let' constant
 94 |         self.internalYear = newDate.year
 95 |         self.internalMonth = newDate.month - 1
[6/12] Compiling AnyDate IntegerExtension.swift
[7/12] Compiling AnyDate Instant.swift
/Users/admin/builder/spi-builder-workspace/Sources/AnyDate/Instant.swift:9:20: warning: static property 'minSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  7 |     internal struct Constant {
  8 |         /// The minimum supported epoch second.
  9 |         static var minSecond: Int64 = -31_557_014_167_219_200
    |                    |- warning: static property 'minSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'minSecond' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'minSecond' 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
 10 |
 11 |         /// The maximum supported epoch second.
/Users/admin/builder/spi-builder-workspace/Sources/AnyDate/Instant.swift:12:20: warning: static property 'maxSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 |         /// The maximum supported epoch second.
 12 |         static var maxSecond: Int64 = 31_556_889_864_403_199
    |                    |- warning: static property 'maxSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'maxSecond' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'maxSecond' 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
 13 |     }
 14 |
[8/12] Compiling AnyDate LocalDateTime.swift
[9/12] Compiling AnyDate LocalTime.swift
[10/12] Emitting module AnyDate
/Users/admin/builder/spi-builder-workspace/Sources/AnyDate/Instant.swift:9:20: warning: static property 'minSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  7 |     internal struct Constant {
  8 |         /// The minimum supported epoch second.
  9 |         static var minSecond: Int64 = -31_557_014_167_219_200
    |                    |- warning: static property 'minSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'minSecond' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'minSecond' 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
 10 |
 11 |         /// The maximum supported epoch second.
/Users/admin/builder/spi-builder-workspace/Sources/AnyDate/Instant.swift:12:20: warning: static property 'maxSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 |         /// The maximum supported epoch second.
 12 |         static var maxSecond: Int64 = 31_556_889_864_403_199
    |                    |- warning: static property 'maxSecond' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'maxSecond' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'maxSecond' 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
 13 |     }
 14 |
[11/12] Compiling AnyDate ClockIdentifierName.swift
[12/12] Compiling AnyDate Clock.swift
Build complete! (15.85s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "AnyDate",
  "name" : "AnyDate",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "AnyDate",
      "targets" : [
        "AnyDate"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4.2",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "AnyDateTests",
      "module_type" : "SwiftTarget",
      "name" : "AnyDateTests",
      "path" : "Tests/AnyDateTests",
      "sources" : [
        "ClockTests.swift",
        "InstantTests.swift",
        "IntegerExtensionTests.swift",
        "LocalDateTests.swift",
        "LocalDateTimeTests.swift",
        "LocalTimeTests.swift",
        "PeriodTests.swift",
        "ZonedDateTimeTests.swift"
      ],
      "target_dependencies" : [
        "AnyDate"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AnyDate",
      "module_type" : "SwiftTarget",
      "name" : "AnyDate",
      "path" : "Sources/AnyDate",
      "product_memberships" : [
        "AnyDate"
      ],
      "sources" : [
        "Clock.swift",
        "ClockIdentifierName.swift",
        "Instant.swift",
        "IntegerExtension.swift",
        "LocalDate.swift",
        "LocalDateTime.swift",
        "LocalTime.swift",
        "Period.swift",
        "ZonedDateTime.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.