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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 XMLCoding with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 3

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
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Builder version: 4.40.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/LiveUI/XMLCoding.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/LiveUI/XMLCoding
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at f0fbfe1 Merge pull request #17 from tachyonics/master
Cloned https://github.com/LiveUI/XMLCoding.git
Revision (git rev-parse @):
f0fbfe17e73f329e13a6133ff5437f7b174049fd
SUCCESS checkout https://github.com/LiveUI/XMLCoding.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/LiveUI/XMLCoding.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
[3/14] Compiling XMLCoding XMLKey.swift
[4/14] Compiling XMLCoding XMLReferencingEncoder.swift
[5/14] Compiling XMLCoding XMLEncoder.swift
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/Encoder/XMLEncoder.swift:29:27: warning: static property 'prettyPrinted' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
  17 |     // MARK: Options
  18 |     /// The formatting of the output XML data.
  19 |     public struct OutputFormatting : OptionSet {
     |                   `- note: consider making struct 'OutputFormatting' conform to the 'Sendable' protocol
  20 |         /// The format's default value.
  21 |         public let rawValue: UInt
     :
  27 |
  28 |         /// Produce human-readable XML with indented output.
  29 |         public static let prettyPrinted = OutputFormatting(rawValue: 1 << 0)
     |                           |- warning: static property 'prettyPrinted' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
     |                           |- note: annotate 'prettyPrinted' 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
  30 |
  31 |         /// Produce XML with dictionary keys sorted in lexicographic order.
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/Encoder/XMLEncoder.swift:33:27: warning: static property 'sortedKeys' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
  17 |     // MARK: Options
  18 |     /// The formatting of the output XML data.
  19 |     public struct OutputFormatting : OptionSet {
     |                   `- note: consider making struct 'OutputFormatting' conform to the 'Sendable' protocol
  20 |         /// The format's default value.
  21 |         public let rawValue: UInt
     :
  31 |         /// Produce XML with dictionary keys sorted in lexicographic order.
  32 |         @available(OSX 10.13, iOS 11.0, watchOS 4.0, tvOS 11.0, *)
  33 |         public static let sortedKeys    = OutputFormatting(rawValue: 1 << 1)
     |                           |- warning: static property 'sortedKeys' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
     |                           |- note: annotate 'sortedKeys' 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
  34 |     }
  35 |
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/ISO8601DateFormatter.swift:17:14: warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
15 | // NOTE: This value is implicitly lazy and _must_ be lazy. We're compiled against the latest SDK (w/ ISO8601DateFormatter), but linked against whichever Foundation the user has. ISO8601DateFormatter might not exist, so we better not hit this code path on an older OS.
16 | @available(OSX 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
17 | internal var _iso8601Formatter: ISO8601DateFormatter = {
   |              |- warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert '_iso8601Formatter' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- 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
18 |     let formatter = ISO8601DateFormatter()
19 |     formatter.formatOptions = .withInternetDateTime
[6/14] Compiling XMLCoding XMLEncodingStorage.swift
[7/14] Compiling XMLCoding ISO8601DateFormatter.swift
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/ISO8601DateFormatter.swift:17:14: warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
15 | // NOTE: This value is implicitly lazy and _must_ be lazy. We're compiled against the latest SDK (w/ ISO8601DateFormatter), but linked against whichever Foundation the user has. ISO8601DateFormatter might not exist, so we better not hit this code path on an older OS.
16 | @available(OSX 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
17 | internal var _iso8601Formatter: ISO8601DateFormatter = {
   |              |- warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert '_iso8601Formatter' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- 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
18 |     let formatter = ISO8601DateFormatter()
19 |     formatter.formatOptions = .withInternetDateTime
[8/14] Compiling XMLCoding EncodingErrorExtension.swift
[9/15] Compiling XMLCoding XMLDecodingStorage.swift
[10/15] Compiling XMLCoding XMLKeyedDecodingContainer.swift
[11/15] Compiling XMLCoding DecodingErrorExtension.swift
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/ISO8601DateFormatter.swift:17:14: warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
15 | // NOTE: This value is implicitly lazy and _must_ be lazy. We're compiled against the latest SDK (w/ ISO8601DateFormatter), but linked against whichever Foundation the user has. ISO8601DateFormatter might not exist, so we better not hit this code path on an older OS.
16 | @available(OSX 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
17 | internal var _iso8601Formatter: ISO8601DateFormatter = {
   |              |- warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert '_iso8601Formatter' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- 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
18 |     let formatter = ISO8601DateFormatter()
19 |     formatter.formatOptions = .withInternetDateTime
[12/15] Compiling XMLCoding XMLDecoder.swift
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/ISO8601DateFormatter.swift:17:14: warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
15 | // NOTE: This value is implicitly lazy and _must_ be lazy. We're compiled against the latest SDK (w/ ISO8601DateFormatter), but linked against whichever Foundation the user has. ISO8601DateFormatter might not exist, so we better not hit this code path on an older OS.
16 | @available(OSX 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
17 | internal var _iso8601Formatter: ISO8601DateFormatter = {
   |              |- warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert '_iso8601Formatter' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- 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
18 |     let formatter = ISO8601DateFormatter()
19 |     formatter.formatOptions = .withInternetDateTime
[13/15] Emitting module XMLCoding
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/Encoder/XMLEncoder.swift:29:27: warning: static property 'prettyPrinted' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
  17 |     // MARK: Options
  18 |     /// The formatting of the output XML data.
  19 |     public struct OutputFormatting : OptionSet {
     |                   `- note: consider making struct 'OutputFormatting' conform to the 'Sendable' protocol
  20 |         /// The format's default value.
  21 |         public let rawValue: UInt
     :
  27 |
  28 |         /// Produce human-readable XML with indented output.
  29 |         public static let prettyPrinted = OutputFormatting(rawValue: 1 << 0)
     |                           |- warning: static property 'prettyPrinted' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
     |                           |- note: annotate 'prettyPrinted' 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
  30 |
  31 |         /// Produce XML with dictionary keys sorted in lexicographic order.
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/Encoder/XMLEncoder.swift:33:27: warning: static property 'sortedKeys' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
  17 |     // MARK: Options
  18 |     /// The formatting of the output XML data.
  19 |     public struct OutputFormatting : OptionSet {
     |                   `- note: consider making struct 'OutputFormatting' conform to the 'Sendable' protocol
  20 |         /// The format's default value.
  21 |         public let rawValue: UInt
     :
  31 |         /// Produce XML with dictionary keys sorted in lexicographic order.
  32 |         @available(OSX 10.13, iOS 11.0, watchOS 4.0, tvOS 11.0, *)
  33 |         public static let sortedKeys    = OutputFormatting(rawValue: 1 << 1)
     |                           |- warning: static property 'sortedKeys' is not concurrency-safe because non-'Sendable' type 'XMLEncoder.OutputFormatting' may have shared mutable state; this is an error in the Swift 6 language mode
     |                           |- note: annotate 'sortedKeys' 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
  34 |     }
  35 |
/Users/admin/builder/spi-builder-workspace/Sources/XMLCoding/ISO8601DateFormatter.swift:17:14: warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
15 | // NOTE: This value is implicitly lazy and _must_ be lazy. We're compiled against the latest SDK (w/ ISO8601DateFormatter), but linked against whichever Foundation the user has. ISO8601DateFormatter might not exist, so we better not hit this code path on an older OS.
16 | @available(OSX 10.12, iOS 10.0, watchOS 3.0, tvOS 10.0, *)
17 | internal var _iso8601Formatter: ISO8601DateFormatter = {
   |              |- warning: var '_iso8601Formatter' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert '_iso8601Formatter' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- 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
18 |     let formatter = ISO8601DateFormatter()
19 |     formatter.formatOptions = .withInternetDateTime
[14/15] Compiling XMLCoding XMLUnkeyedDecodingContainer.swift
[15/15] Compiling XMLCoding XMLStackParser.swift
Build complete! (21.96s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "XMLCoding",
  "name" : "XMLCoding",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "XMLCoding",
      "targets" : [
        "XMLCoding"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "XMLCodingTests",
      "module_type" : "SwiftTarget",
      "name" : "XMLCodingTests",
      "path" : "Tests/XMLCodingTests",
      "sources" : [
        "XCTestManifests.swift",
        "XMLParsingTests.swift"
      ],
      "target_dependencies" : [
        "XMLCoding"
      ],
      "type" : "test"
    },
    {
      "c99name" : "XMLCoding",
      "module_type" : "SwiftTarget",
      "name" : "XMLCoding",
      "path" : "Sources/XMLCoding",
      "product_memberships" : [
        "XMLCoding"
      ],
      "sources" : [
        "Decoder/DecodingErrorExtension.swift",
        "Decoder/XMLDecoder.swift",
        "Decoder/XMLDecodingStorage.swift",
        "Decoder/XMLKeyedDecodingContainer.swift",
        "Decoder/XMLUnkeyedDecodingContainer.swift",
        "Encoder/EncodingErrorExtension.swift",
        "Encoder/XMLEncoder.swift",
        "Encoder/XMLEncodingStorage.swift",
        "Encoder/XMLReferencingEncoder.swift",
        "ISO8601DateFormatter.swift",
        "XMLKey.swift",
        "XMLStackParser.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.