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 BitWiser, reference main (f70758), with Swift 6.1 for Linux on 26 Apr 2025 19:53:31 UTC.

Swift 6 data race errors: 2

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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/DrAma999/BitWiser.git
Reference: main
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/DrAma999/BitWiser
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at f707582 Update README.md
Cloned https://github.com/DrAma999/BitWiser.git
Revision (git rev-parse @):
f707582c5f10e3b3b251f1fa985ccf9e00bc3935
SUCCESS checkout https://github.com/DrAma999/BitWiser.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/DrAma999/BitWiser.git
https://github.com/DrAma999/BitWiser.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "BitWiser",
  "name" : "BitWiser",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "BitWiser",
      "targets" : [
        "BitWiser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BitWiserTests",
      "module_type" : "SwiftTarget",
      "name" : "BitWiserTests",
      "path" : "Tests/BitWiserTests",
      "sources" : [
        "BitTests.swift",
        "BitWiserTests+Numeric.swift",
        "BitWiserTests.swift",
        "ByteTests.swift",
        "DSLTests.swift"
      ],
      "target_dependencies" : [
        "BitWiser"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BitWiser",
      "module_type" : "SwiftTarget",
      "name" : "BitWiser",
      "path" : "Sources/BitWiser",
      "product_memberships" : [
        "BitWiser"
      ],
      "sources" : [
        "BitWiser.swift",
        "ByteRepresentable/ByteRepresentable.swift",
        "DSL/ByteArrayBuilder.swift",
        "DSL/DataConvertibleBuilder.swift",
        "DataRepresentable/DataRepresentable.swift",
        "Extension/Extension+Data.swift",
        "Extension/Extension+Numeric.swift",
        "Extension/Extension+String.swift",
        "Model/Bit.swift",
        "Model/Byte.swift",
        "Model/Error.swift",
        "Model/Nibble.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$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
[3/14] Compiling BitWiser Bit.swift
[4/15] Compiling BitWiser Error.swift
[5/15] Compiling BitWiser DataRepresentable.swift
/host/spi-builder-workspace/Sources/BitWiser/Extension/Extension+Data.swift:38:20: warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |
34 |     /// Option about how to encode the hex string representation
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |         public let rawValue: UInt8
37 |
38 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
   |                    |- warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: add '@MainActor' to make static property 'upperCase' part of global actor 'MainActor'
   |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
39 |         static let bytePadding = HexEncodingOptions(rawValue: 1 << 1)
40 |
/host/spi-builder-workspace/Sources/BitWiser/Extension/Extension+Data.swift:39:20: warning: static property 'bytePadding' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |
34 |     /// Option about how to encode the hex string representation
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |         public let rawValue: UInt8
37 |
38 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
39 |         static let bytePadding = HexEncodingOptions(rawValue: 1 << 1)
   |                    |- warning: static property 'bytePadding' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: add '@MainActor' to make static property 'bytePadding' part of global actor 'MainActor'
   |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
40 |
41 |         public init(rawValue: UInt8) {
[6/15] Compiling BitWiser Extension+Data.swift
/host/spi-builder-workspace/Sources/BitWiser/Extension/Extension+Data.swift:38:20: warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |
34 |     /// Option about how to encode the hex string representation
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |         public let rawValue: UInt8
37 |
38 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
   |                    |- warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: add '@MainActor' to make static property 'upperCase' part of global actor 'MainActor'
   |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
39 |         static let bytePadding = HexEncodingOptions(rawValue: 1 << 1)
40 |
/host/spi-builder-workspace/Sources/BitWiser/Extension/Extension+Data.swift:39:20: warning: static property 'bytePadding' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |
34 |     /// Option about how to encode the hex string representation
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |         public let rawValue: UInt8
37 |
38 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
39 |         static let bytePadding = HexEncodingOptions(rawValue: 1 << 1)
   |                    |- warning: static property 'bytePadding' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: add '@MainActor' to make static property 'bytePadding' part of global actor 'MainActor'
   |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
40 |
41 |         public init(rawValue: UInt8) {
[7/15] Compiling BitWiser Extension+Numeric.swift
[8/15] Compiling BitWiser Extension+String.swift
[9/15] Compiling BitWiser ByteArrayBuilder.swift
[10/15] Compiling BitWiser DataConvertibleBuilder.swift
[11/15] Emitting module BitWiser
/host/spi-builder-workspace/Sources/BitWiser/Extension/Extension+Data.swift:38:20: warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |
34 |     /// Option about how to encode the hex string representation
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |         public let rawValue: UInt8
37 |
38 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
   |                    |- warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: add '@MainActor' to make static property 'upperCase' part of global actor 'MainActor'
   |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
39 |         static let bytePadding = HexEncodingOptions(rawValue: 1 << 1)
40 |
/host/spi-builder-workspace/Sources/BitWiser/Extension/Extension+Data.swift:39:20: warning: static property 'bytePadding' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |
34 |     /// Option about how to encode the hex string representation
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |         public let rawValue: UInt8
37 |
38 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
39 |         static let bytePadding = HexEncodingOptions(rawValue: 1 << 1)
   |                    |- warning: static property 'bytePadding' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: add '@MainActor' to make static property 'bytePadding' part of global actor 'MainActor'
   |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
40 |
41 |         public init(rawValue: UInt8) {
[12/15] Compiling BitWiser BitWiser.swift
[13/15] Compiling BitWiser ByteRepresentable.swift
[14/15] Compiling BitWiser Byte.swift
[15/15] Compiling BitWiser Nibble.swift
Build complete! (6.77s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "BitWiser",
  "name" : "BitWiser",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "BitWiser",
      "targets" : [
        "BitWiser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BitWiserTests",
      "module_type" : "SwiftTarget",
      "name" : "BitWiserTests",
      "path" : "Tests/BitWiserTests",
      "sources" : [
        "BitTests.swift",
        "BitWiserTests+Numeric.swift",
        "BitWiserTests.swift",
        "ByteTests.swift",
        "DSLTests.swift"
      ],
      "target_dependencies" : [
        "BitWiser"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BitWiser",
      "module_type" : "SwiftTarget",
      "name" : "BitWiser",
      "path" : "Sources/BitWiser",
      "product_memberships" : [
        "BitWiser"
      ],
      "sources" : [
        "BitWiser.swift",
        "ByteRepresentable/ByteRepresentable.swift",
        "DSL/ByteArrayBuilder.swift",
        "DSL/DataConvertibleBuilder.swift",
        "DataRepresentable/DataRepresentable.swift",
        "Extension/Extension+Data.swift",
        "Extension/Extension+Numeric.swift",
        "Extension/Extension+String.swift",
        "Model/Bit.swift",
        "Model/Byte.swift",
        "Model/Error.swift",
        "Model/Nibble.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
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.