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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

Failed to build LDSwiftEventSource, reference main (193c09), with Swift 6.0 for macOS (SPM) on 6 Dec 2024 01:29:08 UTC.

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 -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.58.5
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/LaunchDarkly/swift-eventsource.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/LaunchDarkly/swift-eventsource
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 193c097 chore: Drop macos-12 build (#86)
Cloned https://github.com/LaunchDarkly/swift-eventsource.git
Revision (git rev-parse @):
193c097f324666691f71b49b1e70249ef21f9f62
SUCCESS checkout https://github.com/LaunchDarkly/swift-eventsource.git at main
========================================
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": "swift-eventsource",
      "name": "LDSwiftEventSource",
      "url": "https://github.com/LaunchDarkly/swift-eventsource.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-eventsource",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/LaunchDarkly/swift-eventsource.git
[1/1573] Fetching swift-eventsource
Fetched https://github.com/LaunchDarkly/swift-eventsource.git from cache (0.99s)
Creating working copy for https://github.com/LaunchDarkly/swift-eventsource.git
Working copy of https://github.com/LaunchDarkly/swift-eventsource.git resolved at main (193c097)
warning: '.resolve-product-dependencies': dependency 'swift-eventsource' 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/LaunchDarkly/swift-eventsource.git
https://github.com/LaunchDarkly/swift-eventsource.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "LDSwiftEventSource",
  "name" : "LDSwiftEventSource",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "11.0"
    },
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    },
    {
      "name" : "tvos",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "LDSwiftEventSource",
      "targets" : [
        "LDSwiftEventSource"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "LDSwiftEventSourceTests",
      "module_type" : "SwiftTarget",
      "name" : "LDSwiftEventSourceTests",
      "path" : "Tests",
      "sources" : [
        "EventParserTests.swift",
        "LDSwiftEventSourceTests.swift",
        "MockHandler.swift",
        "TestUtil.swift",
        "UTF8LineParserTests.swift"
      ],
      "target_dependencies" : [
        "LDSwiftEventSource"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LDSwiftEventSource",
      "module_type" : "SwiftTarget",
      "name" : "LDSwiftEventSource",
      "path" : "Source",
      "product_memberships" : [
        "LDSwiftEventSource"
      ],
      "sources" : [
        "EventParser.swift",
        "LDSwiftEventSource.swift",
        "Logs.swift",
        "Types.swift",
        "UTF8LineParser.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
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 -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/8] Compiling LDSwiftEventSource UTF8LineParser.swift
[4/8] Compiling LDSwiftEventSource Types.swift
/Users/admin/builder/spi-builder-workspace/Source/Types.swift:99:14: warning: non-final class 'UnsuccessfulResponseError' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
 97 |
 98 | /// Error class that indicates the remote server returned an unsuccessful HTTP response code.
 99 | public class UnsuccessfulResponseError: Error {
    |              `- warning: non-final class 'UnsuccessfulResponseError' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
100 |     /// The HTTP response code received.
101 |     public let responseCode: Int
[5/8] Compiling LDSwiftEventSource Logs.swift
[6/8] Emitting module LDSwiftEventSource
/Users/admin/builder/spi-builder-workspace/Source/LDSwiftEventSource.swift:165:7: warning: non-final class 'EventSourceDelegate' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
163 |
164 | // MARK: EventSourceDelegate
165 | class EventSourceDelegate: NSObject, URLSessionDataDelegate {
    |       `- warning: non-final class 'EventSourceDelegate' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
166 |     private let delegateQueue: DispatchQueue = DispatchQueue(label: "ESDelegateQueue")
167 |
/Users/admin/builder/spi-builder-workspace/Source/LDSwiftEventSource.swift:168:16: warning: stored property 'logger' of 'Sendable'-conforming class 'EventSourceDelegate' is mutable; this is an error in the Swift 6 language mode
166 |     private let delegateQueue: DispatchQueue = DispatchQueue(label: "ESDelegateQueue")
167 |
168 |     public var logger: InternalLogging
    |                `- warning: stored property 'logger' of 'Sendable'-conforming class 'EventSourceDelegate' is mutable; this is an error in the Swift 6 language mode
169 |
170 |     private let config: EventSource.Config
/Users/admin/builder/spi-builder-workspace/Source/Types.swift:99:14: warning: non-final class 'UnsuccessfulResponseError' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
 97 |
 98 | /// Error class that indicates the remote server returned an unsuccessful HTTP response code.
 99 | public class UnsuccessfulResponseError: Error {
    |              `- warning: non-final class 'UnsuccessfulResponseError' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
100 |     /// The HTTP response code received.
101 |     public let responseCode: Int
[7/8] Compiling LDSwiftEventSource LDSwiftEventSource.swift
/Users/admin/builder/spi-builder-workspace/Source/LDSwiftEventSource.swift:165:7: warning: non-final class 'EventSourceDelegate' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
163 |
164 | // MARK: EventSourceDelegate
165 | class EventSourceDelegate: NSObject, URLSessionDataDelegate {
    |       `- warning: non-final class 'EventSourceDelegate' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
166 |     private let delegateQueue: DispatchQueue = DispatchQueue(label: "ESDelegateQueue")
167 |
/Users/admin/builder/spi-builder-workspace/Source/LDSwiftEventSource.swift:168:16: warning: stored property 'logger' of 'Sendable'-conforming class 'EventSourceDelegate' is mutable; this is an error in the Swift 6 language mode
166 |     private let delegateQueue: DispatchQueue = DispatchQueue(label: "ESDelegateQueue")
167 |
168 |     public var logger: InternalLogging
    |                `- warning: stored property 'logger' of 'Sendable'-conforming class 'EventSourceDelegate' is mutable; this is an error in the Swift 6 language mode
169 |
170 |     private let config: EventSource.Config
[8/8] Compiling LDSwiftEventSource EventParser.swift
/Users/admin/builder/spi-builder-workspace/Source/EventParser.swift:68:45: error: cannot convert value of type '@Sendable (String) -> Bool' to expected argument type '(Substring.Element) throws -> Bool' (aka '(Character) throws -> Bool')
66 |             eventType = String(value)
67 |         case Constants.retryLabel:
68 |             if value.allSatisfy(("0"..."9").contains), let reconnectionTime = Int64(value) {
   |                                             `- error: cannot convert value of type '@Sendable (String) -> Bool' to expected argument type '(Substring.Element) throws -> Bool' (aka '(Character) throws -> Bool')
69 |                 currentRetry = Double(reconnectionTime) * 0.001
70 |             }
BUILD FAILURE 6.0 macosSpm