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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 DNS, reference master (cf8e22), with Swift 6.0 for Linux on 31 Oct 2024 08:23:30 UTC.

Swift 6 data race errors: 2

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" 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: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mcfedr/DNS.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/mcfedr/DNS
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at cf8e222 Bump the version
Cloned https://github.com/mcfedr/DNS.git
Revision (git rev-parse @):
cf8e2226a593a1b015013188ace1b5fb9c37690b
SUCCESS checkout https://github.com/mcfedr/DNS.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/mcfedr/DNS.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" 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
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/9] Compiling DNS Bytes.swift
[4/9] Compiling DNS Data+Extensions.swift
[5/9] Emitting module DNS
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/DNS/IP.swift:9:5: warning: let 'ntohl' is not concurrency-safe because non-'Sendable' type '(UInt32) -> UInt32' may have shared mutable state; this is an error in the Swift 6 language mode
  7 |     return value.byteSwapped
  8 | }
  9 | let ntohl = htonl
    |     |- warning: let 'ntohl' is not concurrency-safe because non-'Sendable' type '(UInt32) -> UInt32' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'ntohl' 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 | public protocol IP: CustomDebugStringConvertible {
/host/spi-builder-workspace/Sources/DNS/Types.swift:52:1: warning: extension declares a conformance of imported type 'UInt16' to imported protocol 'CustomDebugStringConvertible'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
 50 | }
 51 |
 52 | extension ResourceRecordType: CustomDebugStringConvertible {
    | |- warning: extension declares a conformance of imported type 'UInt16' to imported protocol 'CustomDebugStringConvertible'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
    | `- note: add '@retroactive' to silence this warning
 53 |     public var debugDescription: String {
 54 |         switch self {
/host/spi-builder-workspace/Sources/DNS/Types.swift:121:27: warning: generic parameter 'IPType' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 97 | }
 98 |
 99 | public struct HostRecord<IPType: IP> {
    |                          `- note: 'IPType' previously declared here
100 |     public var name: String
101 |     public var unique: Bool
    :
119 |     }
120 |
121 |     public static func ==<IPType> (lhs: HostRecord<IPType>, rhs: HostRecord<IPType>) -> Bool {
    |                           `- warning: generic parameter 'IPType' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
122 |         return lhs.name == rhs.name
123 |         // TODO: check equality of IP addresses
[6/9] Compiling DNS Message.swift
[7/9] Compiling DNS IP.swift
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/DNS/IP.swift:9:5: warning: let 'ntohl' is not concurrency-safe because non-'Sendable' type '(UInt32) -> UInt32' may have shared mutable state; this is an error in the Swift 6 language mode
  7 |     return value.byteSwapped
  8 | }
  9 | let ntohl = htonl
    |     |- warning: let 'ntohl' is not concurrency-safe because non-'Sendable' type '(UInt32) -> UInt32' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'ntohl' 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 | public protocol IP: CustomDebugStringConvertible {
[8/9] Compiling DNS Integer+Data.swift
[9/9] Compiling DNS Types.swift
/host/spi-builder-workspace/Sources/DNS/Types.swift:52:1: warning: extension declares a conformance of imported type 'UInt16' to imported protocol 'CustomDebugStringConvertible'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
 50 | }
 51 |
 52 | extension ResourceRecordType: CustomDebugStringConvertible {
    | |- warning: extension declares a conformance of imported type 'UInt16' to imported protocol 'CustomDebugStringConvertible'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
    | `- note: add '@retroactive' to silence this warning
 53 |     public var debugDescription: String {
 54 |         switch self {
/host/spi-builder-workspace/Sources/DNS/Types.swift:121:27: warning: generic parameter 'IPType' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 97 | }
 98 |
 99 | public struct HostRecord<IPType: IP> {
    |                          `- note: 'IPType' previously declared here
100 |     public var name: String
101 |     public var unique: Bool
    :
119 |     }
120 |
121 |     public static func ==<IPType> (lhs: HostRecord<IPType>, rhs: HostRecord<IPType>) -> Bool {
    |                           `- warning: generic parameter 'IPType' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
122 |         return lhs.name == rhs.name
123 |         // TODO: check equality of IP addresses
Build complete! (10.52s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DNS",
  "name" : "DNS",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DNS",
      "targets" : [
        "DNS"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4"
  ],
  "targets" : [
    {
      "c99name" : "DNSTests",
      "module_type" : "SwiftTarget",
      "name" : "DNSTests",
      "path" : "Tests/DNSTests",
      "sources" : [
        "DNSTests.swift",
        "FuzzTests.swift",
        "IPTests.swift"
      ],
      "target_dependencies" : [
        "DNS"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DNS",
      "module_type" : "SwiftTarget",
      "name" : "DNS",
      "path" : "Sources/DNS",
      "product_memberships" : [
        "DNS"
      ],
      "sources" : [
        "Bytes.swift",
        "Data+Extensions.swift",
        "IP.swift",
        "Integer+Data.swift",
        "Message.swift",
        "Types.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Done.