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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 ICY with Swift 6.0 for Linux.

Swift 6 data race errors: 2

Build Command

bash -c docker run --rm -v "checkouts-4609320-0":/host -w "$workDir" 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: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Bouke/ICY.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/Bouke/ICY
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 61ffd86 Handle portal http errors
Cloned https://github.com/Bouke/ICY.git
Revision (git rev-parse @):
61ffd86fe9452c66440f8bb14a48ef5fb77fbfa0
SUCCESS checkout https://github.com/Bouke/ICY.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $workDir
https://github.com/Bouke/ICY.git
Running build ...
bash -c docker run --rm -v "checkouts-4609320-0":/host -w "$workDir" 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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/4] Compiling ICY ICY.swift
/host/spi-builder-workspace/Sources/ICY.swift:133:5: warning: let 'dateFormatter' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
131 | }
132 |
133 | let dateFormatter = { () -> DateFormatter in
    |     `- warning: let 'dateFormatter' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
134 |     let formatter = DateFormatter()
135 |     formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
Foundation.DateFormatter:1:12: note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 1 | open class DateFormatter : Formatter {
   |            `- note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 2 |     override public init()
 3 |     required public init?(coder: NSCoder)
/host/spi-builder-workspace/Sources/ICY.swift:1:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  1 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  2 | #if canImport(FoundationNetworking)
  3 | import FoundationNetworking
    :
131 | }
132 |
133 | let dateFormatter = { () -> DateFormatter in
    |     |- note: annotate 'dateFormatter' 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
134 |     let formatter = DateFormatter()
135 |     formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
/host/spi-builder-workspace/Sources/ICY.swift:151:5: warning: let 'sharedURLSession' is not concurrency-safe because non-'Sendable' type 'URLSession' may have shared mutable state; this is an error in the Swift 6 language mode
149 | }
150 |
151 | let sharedURLSession: URLSession = {
    |     `- warning: let 'sharedURLSession' is not concurrency-safe because non-'Sendable' type 'URLSession' may have shared mutable state; this is an error in the Swift 6 language mode
152 |     #if os(macOS)
153 |         return URLSession.shared
FoundationNetworking.URLSession:1:12: note: class 'URLSession' does not conform to the 'Sendable' protocol
 1 | open class URLSession : NSObject {
   |            `- note: class 'URLSession' does not conform to the 'Sendable' protocol
 2 |     open class var shared: URLSession { get }
 3 |     public init(configuration: URLSessionConfiguration)
/host/spi-builder-workspace/Sources/ICY.swift:3:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'FoundationNetworking'
  1 | import Foundation
  2 | #if canImport(FoundationNetworking)
  3 | import FoundationNetworking
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'FoundationNetworking'
  4 | #endif
  5 |
    :
149 | }
150 |
151 | let sharedURLSession: URLSession = {
    |     |- note: annotate 'sharedURLSession' 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
152 |     #if os(macOS)
153 |         return URLSession.shared
/host/spi-builder-workspace/Sources/ICY.swift:155:29: warning: 'init()' is deprecated: Use .default instead.
153 |         return URLSession.shared
154 |     #elseif os(Linux)
155 |         let configuration = URLSessionConfiguration()
    |                             |- warning: 'init()' is deprecated: Use .default instead.
    |                             `- note: use 'URLSessionConfiguration.default' instead
156 |         return URLSession(configuration: configuration)
157 |     #endif
[4/4] Emitting module ICY
/host/spi-builder-workspace/Sources/ICY.swift:133:5: warning: let 'dateFormatter' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
131 | }
132 |
133 | let dateFormatter = { () -> DateFormatter in
    |     `- warning: let 'dateFormatter' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
134 |     let formatter = DateFormatter()
135 |     formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
Foundation.DateFormatter:1:12: note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 1 | open class DateFormatter : Formatter {
   |            `- note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 2 |     override public init()
 3 |     required public init?(coder: NSCoder)
/host/spi-builder-workspace/Sources/ICY.swift:1:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  1 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  2 | #if canImport(FoundationNetworking)
  3 | import FoundationNetworking
    :
131 | }
132 |
133 | let dateFormatter = { () -> DateFormatter in
    |     |- note: annotate 'dateFormatter' 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
134 |     let formatter = DateFormatter()
135 |     formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
/host/spi-builder-workspace/Sources/ICY.swift:151:5: warning: let 'sharedURLSession' is not concurrency-safe because non-'Sendable' type 'URLSession' may have shared mutable state; this is an error in the Swift 6 language mode
149 | }
150 |
151 | let sharedURLSession: URLSession = {
    |     `- warning: let 'sharedURLSession' is not concurrency-safe because non-'Sendable' type 'URLSession' may have shared mutable state; this is an error in the Swift 6 language mode
152 |     #if os(macOS)
153 |         return URLSession.shared
FoundationNetworking.URLSession:1:12: note: class 'URLSession' does not conform to the 'Sendable' protocol
 1 | open class URLSession : NSObject {
   |            `- note: class 'URLSession' does not conform to the 'Sendable' protocol
 2 |     open class var shared: URLSession { get }
 3 |     public init(configuration: URLSessionConfiguration)
/host/spi-builder-workspace/Sources/ICY.swift:3:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'FoundationNetworking'
  1 | import Foundation
  2 | #if canImport(FoundationNetworking)
  3 | import FoundationNetworking
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'FoundationNetworking'
  4 | #endif
  5 |
    :
149 | }
150 |
151 | let sharedURLSession: URLSession = {
    |     |- note: annotate 'sharedURLSession' 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
152 |     #if os(macOS)
153 |         return URLSession.shared
/host/spi-builder-workspace/Sources/ICY.swift:155:29: warning: 'init()' is deprecated: Use .default instead.
153 |         return URLSession.shared
154 |     #elseif os(Linux)
155 |         let configuration = URLSessionConfiguration()
    |                             |- warning: 'init()' is deprecated: Use .default instead.
    |                             `- note: use 'URLSessionConfiguration.default' instead
156 |         return URLSession(configuration: configuration)
157 |     #endif
Build complete! (11.14s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ICY",
  "name" : "ICY",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ICY",
      "targets" : [
        "ICY"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ICY",
      "module_type" : "SwiftTarget",
      "name" : "ICY",
      "path" : "Sources",
      "product_memberships" : [
        "ICY"
      ],
      "sources" : [
        "ICY.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.2"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.