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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 Echo, reference 0.0.1 (8a536c), with Swift 6.0 for macOS (SPM) on 4 Nov 2024 04:02:35 UTC.

Swift 6 data race errors: 1

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

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ole/Echo.git
Reference: 0.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ole/Echo
 * tag               0.0.1      -> FETCH_HEAD
HEAD is now at 8a536c3 Fix travis build #3
Cloned https://github.com/ole/Echo.git
Revision (git rev-parse @):
8a536c35b154ba090aa490029e8ee9e77dd9ea99
SUCCESS checkout https://github.com/ole/Echo.git at 0.0.1
========================================
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": "echo",
      "name": "Echo",
      "url": "https://github.com/ole/Echo.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Echo",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/ole/Echo.git
[1/870] Fetching echo
Fetched https://github.com/ole/Echo.git from cache (0.88s)
Creating working copy for https://github.com/ole/Echo.git
Working copy of https://github.com/ole/Echo.git resolved at 0.0.1 (8a536c3)
warning: '.resolve-product-dependencies': dependency 'echo' 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/ole/Echo.git
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
Building for debugging...
[0/6] Write sources
[3/6] Compiling CEcho Functions.c
[4/6] Write swift-version--7754E27361AE5C74.txt
[5/6] Compiling CEcho KnownMetadata.c
[7/47] Emitting module Echo
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[8/51] Compiling Echo AnonymousDescriptor.swift
[9/51] Compiling Echo ClassDescriptor.swift
[10/51] Compiling Echo ContextDescriptor.swift
[11/51] Compiling Echo ContextDescriptorValues.swift
[12/51] Compiling Echo EnumDescriptor.swift
[13/51] Compiling Echo StructDescriptor.swift
[14/51] Compiling Echo TypeContextDescriptor.swift
[15/51] Compiling Echo Echo.swift
[16/51] Compiling Echo ClassMetadata.swift
[17/51] Compiling Echo EnumMetadata.swift
[18/51] Compiling Echo KnownMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[19/51] Compiling Echo FieldType.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[20/51] Compiling Echo Misc.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[21/51] Compiling Echo RelativeDirectPointer.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[22/51] Compiling Echo EnumValueWitnessTable.swift
[23/51] Compiling Echo ExistentialMetadata.swift
[24/51] Compiling Echo ExistentialMetatypeMetadata.swift
[25/51] Compiling Echo ForeignClassMetadata.swift
[26/51] Compiling Echo FunctionMetadata.swift
[27/51] Compiling Echo OpaqueMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[28/51] Compiling Echo StructMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[29/51] Compiling Echo TupleMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[30/51] Compiling Echo TypeMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Utils/Misc.swift:75:5: warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 |
75 | var mangledNameCache = [UnsafeRawPointer: [String: Any.Type?]]()
   |     |- warning: var 'mangledNameCache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'mangledNameCache' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: annotate 'mangledNameCache' 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
76 |
77 | // https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift
[31/51] Compiling Echo ExtensionDescriptor.swift
[32/51] Compiling Echo FieldDescriptor.swift
[33/51] Compiling Echo GenericContext.swift
[34/51] Compiling Echo ModuleDescriptor.swift
[35/51] Compiling Echo ProtocolDescriptor.swift
[36/51] Compiling Echo ValueWitnessTable.swift
[37/51] Compiling Echo ExistentialContainer.swift
[38/51] Compiling Echo Functions.swift
[39/51] Compiling Echo HeapObject.swift
[40/51] Compiling Echo HeapGenericLocalVariableMetadata.swift
[41/51] Compiling Echo HeapLocalVariableMetadata.swift
[42/51] Compiling Echo Metadata.swift
[43/51] Compiling Echo MetadataAccessFunction.swift
[44/51] Compiling Echo MetadataRequest.swift
[45/51] Compiling Echo MetadataValues.swift
[46/51] Compiling Echo MetatypeMetadata.swift
[47/51] Compiling Echo ObjCClassWrapperMetadata.swift
[48/51] Compiling Echo RelativeIndirectPointer.swift
[49/51] Compiling Echo RelativeIndirectablePointer.swift
[50/51] Compiling Echo RelativeIndirectablePointerIntPair.swift
[51/51] Compiling Echo RelativePointer.swift
[52/56] Compiling EchoMirror Mirror.swift
[53/56] Emitting module EchoStoredProperties
[54/56] Compiling EchoStoredProperties StoredProperties.swift
[55/56] Emitting module EchoMirror
[56/56] Compiling EchoMirror ReflectionMirror.swift
Build complete! (9.62s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Echo",
  "name" : "Echo",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Echo",
      "targets" : [
        "Echo",
        "EchoMirror",
        "EchoStoredProperties"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "EchoTests",
      "module_type" : "SwiftTarget",
      "name" : "EchoTests",
      "path" : "Tests/EchoTests",
      "sources" : [
        "Context Descriptor/AnonymousDescriptor.swift",
        "Context Descriptor/ClassDescriptor.swift",
        "Context Descriptor/EnumDescriptor.swift",
        "Context Descriptor/ExtensionDescriptor.swift",
        "EchoTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Echo"
      ],
      "type" : "test"
    },
    {
      "c99name" : "EchoStoredProperties",
      "module_type" : "SwiftTarget",
      "name" : "EchoStoredProperties",
      "path" : "Sources/EchoStoredProperties",
      "product_memberships" : [
        "Echo"
      ],
      "sources" : [
        "StoredProperties.swift"
      ],
      "target_dependencies" : [
        "Echo"
      ],
      "type" : "library"
    },
    {
      "c99name" : "EchoMirror",
      "module_type" : "SwiftTarget",
      "name" : "EchoMirror",
      "path" : "Sources/EchoMirror",
      "product_memberships" : [
        "Echo"
      ],
      "sources" : [
        "Mirror.swift",
        "ReflectionMirror.swift"
      ],
      "target_dependencies" : [
        "Echo"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Echo",
      "module_type" : "SwiftTarget",
      "name" : "Echo",
      "path" : "Sources/Echo",
      "product_memberships" : [
        "Echo"
      ],
      "sources" : [
        "ContextDescriptor/AnonymousDescriptor.swift",
        "ContextDescriptor/ClassDescriptor.swift",
        "ContextDescriptor/ContextDescriptor.swift",
        "ContextDescriptor/ContextDescriptorValues.swift",
        "ContextDescriptor/EnumDescriptor.swift",
        "ContextDescriptor/ExtensionDescriptor.swift",
        "ContextDescriptor/FieldDescriptor.swift",
        "ContextDescriptor/GenericContext.swift",
        "ContextDescriptor/ModuleDescriptor.swift",
        "ContextDescriptor/ProtocolDescriptor.swift",
        "ContextDescriptor/StructDescriptor.swift",
        "ContextDescriptor/TypeContextDescriptor.swift",
        "Echo.swift",
        "Metadata/ClassMetadata.swift",
        "Metadata/EnumMetadata.swift",
        "Metadata/EnumValueWitnessTable.swift",
        "Metadata/ExistentialMetadata.swift",
        "Metadata/ExistentialMetatypeMetadata.swift",
        "Metadata/ForeignClassMetadata.swift",
        "Metadata/FunctionMetadata.swift",
        "Metadata/HeapGenericLocalVariableMetadata.swift",
        "Metadata/HeapLocalVariableMetadata.swift",
        "Metadata/Metadata.swift",
        "Metadata/MetadataAccessFunction.swift",
        "Metadata/MetadataRequest.swift",
        "Metadata/MetadataValues.swift",
        "Metadata/MetatypeMetadata.swift",
        "Metadata/ObjCClassWrapperMetadata.swift",
        "Metadata/OpaqueMetadata.swift",
        "Metadata/StructMetadata.swift",
        "Metadata/TupleMetadata.swift",
        "Metadata/TypeMetadata.swift",
        "Metadata/ValueWitnessTable.swift",
        "Runtime/ExistentialContainer.swift",
        "Runtime/Functions.swift",
        "Runtime/HeapObject.swift",
        "Runtime/KnownMetadata.swift",
        "Utils/FieldType.swift",
        "Utils/Misc.swift",
        "Utils/RelativeDirectPointer.swift",
        "Utils/RelativeIndirectPointer.swift",
        "Utils/RelativeIndirectablePointer.swift",
        "Utils/RelativeIndirectablePointerIntPair.swift",
        "Utils/RelativePointer.swift"
      ],
      "target_dependencies" : [
        "CEcho"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CEcho",
      "module_type" : "ClangTarget",
      "name" : "CEcho",
      "path" : "Sources/CEcho",
      "product_memberships" : [
        "Echo"
      ],
      "sources" : [
        "Functions.c",
        "KnownMetadata.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.