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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 TLVCoding with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pureswift/tlvcoding.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/pureswift/tlvcoding
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at fa31426 Update GitHub CI
Cloned https://github.com/pureswift/tlvcoding.git
Revision (git rev-parse @):
fa31426c76d1630fe8942e6ebf2eadc20f280995
SUCCESS checkout https://github.com/pureswift/tlvcoding.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/pureswift/tlvcoding.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-6F35C1178C84523A.txt
[3/12] Compiling TLVCoding Integer.swift
[4/12] Compiling TLVCoding TLVCodable.swift
[5/13] Compiling TLVCoding Item.swift
[6/13] Compiling TLVCoding Format.swift
/Users/admin/builder/spi-builder-workspace/Sources/Format.swift:105:16: warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
103 |
104 |     @available(macOS 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
105 |     static let iso8601Formatter: ISO8601DateFormatter = {
    |                |- warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'iso8601Formatter' 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
106 |         let formatter = ISO8601DateFormatter()
107 |         formatter.formatOptions = .withInternetDateTime
Foundation.ISO8601DateFormatter:2:12: note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 1 | @available(macOS 10.12, *)
 2 | open class ISO8601DateFormatter : Formatter, NSSecureCoding {
   |            `- note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 3 |     open var timeZone: TimeZone! { get set }
 4 |     open var formatOptions: ISO8601DateFormatter.Options { get set }
[7/13] Compiling TLVCoding DataConvertible.swift
[8/13] Compiling TLVCoding Decoder.swift
/Users/admin/builder/spi-builder-workspace/Sources/Format.swift:105:16: warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
103 |
104 |     @available(macOS 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
105 |     static let iso8601Formatter: ISO8601DateFormatter = {
    |                |- warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'iso8601Formatter' 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
106 |         let formatter = ISO8601DateFormatter()
107 |         formatter.formatOptions = .withInternetDateTime
Foundation.ISO8601DateFormatter:2:12: note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 1 | @available(macOS 10.12, *)
 2 | open class ISO8601DateFormatter : Formatter, NSSecureCoding {
   |            `- note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 3 |     open var timeZone: TimeZone! { get set }
 4 |     open var formatOptions: ISO8601DateFormatter.Options { get set }
[9/13] Emitting module TLVCoding
/Users/admin/builder/spi-builder-workspace/Sources/Format.swift:105:16: warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
103 |
104 |     @available(macOS 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
105 |     static let iso8601Formatter: ISO8601DateFormatter = {
    |                |- warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'iso8601Formatter' 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
106 |         let formatter = ISO8601DateFormatter()
107 |         formatter.formatOptions = .withInternetDateTime
Foundation.ISO8601DateFormatter:2:12: note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 1 | @available(macOS 10.12, *)
 2 | open class ISO8601DateFormatter : Formatter, NSSecureCoding {
   |            `- note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 3 |     open var timeZone: TimeZone! { get set }
 4 |     open var formatOptions: ISO8601DateFormatter.Options { get set }
[10/13] Compiling TLVCoding Encoder.swift
/Users/admin/builder/spi-builder-workspace/Sources/Format.swift:105:16: warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
103 |
104 |     @available(macOS 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
105 |     static let iso8601Formatter: ISO8601DateFormatter = {
    |                |- warning: static property 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: annotate 'iso8601Formatter' 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
106 |         let formatter = ISO8601DateFormatter()
107 |         formatter.formatOptions = .withInternetDateTime
Foundation.ISO8601DateFormatter:2:12: note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 1 | @available(macOS 10.12, *)
 2 | open class ISO8601DateFormatter : Formatter, NSSecureCoding {
   |            `- note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
 3 |     open var timeZone: TimeZone! { get set }
 4 |     open var formatOptions: ISO8601DateFormatter.Options { get set }
[11/13] Compiling TLVCoding Data.swift
[12/13] Compiling TLVCoding CodingKey.swift
[13/13] Compiling TLVCoding TypeCode.swift
Build complete! (21.29s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "TLVCoding",
  "name" : "TLVCoding",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "TLVCoding",
      "targets" : [
        "TLVCoding"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "TLVCodingTests",
      "module_type" : "SwiftTarget",
      "name" : "TLVCodingTests",
      "path" : "Tests/TLVCodingTests",
      "sources" : [
        "TLVCodingTests.swift"
      ],
      "target_dependencies" : [
        "TLVCoding"
      ],
      "type" : "test"
    },
    {
      "c99name" : "TLVCoding",
      "module_type" : "SwiftTarget",
      "name" : "TLVCoding",
      "path" : "Sources",
      "product_memberships" : [
        "TLVCoding"
      ],
      "sources" : [
        "CodingKey.swift",
        "Data.swift",
        "DataConvertible.swift",
        "Decoder.swift",
        "Encoder.swift",
        "Format.swift",
        "Integer.swift",
        "Item.swift",
        "TLVCodable.swift",
        "TypeCode.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.