The Swift Package Index logo.Swift Package Index

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 6.1 for Linux on 25 Apr 2025 17:36:14 UTC.

Swift 6 data race errors: 2

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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/Kawoou/AnyDate.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/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
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/Kawoou/AnyDate.git
https://github.com/Kawoou/AnyDate.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "AnyDate",
  "name" : "AnyDate",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "AnyDate",
      "targets" : [
        "AnyDate"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4.2",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "AnyDateTests",
      "module_type" : "SwiftTarget",
      "name" : "AnyDateTests",
      "path" : "Tests/AnyDateTests",
      "sources" : [
        "ClockTests.swift",
        "InstantTests.swift",
        "IntegerExtensionTests.swift",
        "LocalDateTests.swift",
        "LocalDateTimeTests.swift",
        "LocalTimeTests.swift",
        "PeriodTests.swift",
        "ZonedDateTimeTests.swift"
      ],
      "target_dependencies" : [
        "AnyDate"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AnyDate",
      "module_type" : "SwiftTarget",
      "name" : "AnyDate",
      "path" : "Sources/AnyDate",
      "product_memberships" : [
        "AnyDate"
      ],
      "sources" : [
        "Clock.swift",
        "ClockIdentifierName.swift",
        "Instant.swift",
        "IntegerExtension.swift",
        "LocalDate.swift",
        "LocalDateTime.swift",
        "LocalTime.swift",
        "Period.swift",
        "ZonedDateTime.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$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
[3/11] Compiling AnyDate LocalDate.swift
[4/12] Compiling AnyDate LocalDateTime.swift
[5/12] Compiling AnyDate IntegerExtension.swift
[6/12] Compiling AnyDate LocalTime.swift
[7/12] Compiling AnyDate Period.swift
/host/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
[8/12] Emitting module AnyDate
/host/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: add '@MainActor' to make static property 'minSecond' part of global actor 'MainActor'
    |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 10 |
 11 |         /// The maximum supported epoch second.
/host/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: add '@MainActor' to make static property 'maxSecond' part of global actor 'MainActor'
    |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |     }
 14 |
[9/12] Compiling AnyDate Instant.swift
/host/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: add '@MainActor' to make static property 'minSecond' part of global actor 'MainActor'
    |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 10 |
 11 |         /// The maximum supported epoch second.
/host/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: add '@MainActor' to make static property 'maxSecond' part of global actor 'MainActor'
    |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |     }
 14 |
[10/12] Compiling AnyDate Clock.swift
[11/12] Compiling AnyDate ClockIdentifierName.swift
[12/12] Compiling AnyDate ZonedDateTime.swift
Build complete! (17.59s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "AnyDate",
  "name" : "AnyDate",
  "path" : "/host/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"
}
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.