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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 swift5.9 (338244), with Swift 6.1 for macOS (SPM) on 28 Apr 2025 06:02:49 UTC.

Swift 6 data race errors: 4

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/p-x9/Echo.git
Reference: swift5.9
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/p-x9/Echo
 * branch            swift5.9   -> FETCH_HEAD
 * [new branch]      swift5.9   -> origin/swift5.9
HEAD is now at 3382440 fix linker error on release build
Cloned https://github.com/p-x9/Echo.git
Revision (git rev-parse @):
3382440406686a077a5bb876a19fc87877e4f7d4
SUCCESS checkout https://github.com/p-x9/Echo.git at swift5.9
Fetching https://github.com/apple/swift-atomics.git from cache
Fetched https://github.com/apple/swift-atomics.git from cache (0.40s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 0.0.3 (0.99s)
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 0.0.3
========================================
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/p-x9/Echo.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Echo",
      "dependencies": [
        {
          "identity": "swift-atomics",
          "name": "swift-atomics",
          "url": "https://github.com/apple/swift-atomics.git",
          "version": "0.0.3",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-atomics",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/p-x9/Echo.git
[1/975] Fetching echo
Fetched https://github.com/p-x9/Echo.git from cache (0.78s)
Fetching https://github.com/apple/swift-atomics.git from cache
Fetched https://github.com/apple/swift-atomics.git from cache (0.42s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 0.0.3 (0.47s)
Creating working copy for https://github.com/p-x9/Echo.git
Working copy of https://github.com/p-x9/Echo.git resolved at swift5.9 (3382440)
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 0.0.3
warning: '.resolve-product-dependencies': dependency 'echo' is not used by any target
Found 1 product dependencies
  - swift-atomics
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/p-x9/Echo.git
https://github.com/p-x9/Echo.git
{
  "dependencies" : [
    {
      "identity" : "swift-atomics",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.0.1",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-atomics.git"
    }
  ],
  "manifest_display_name" : "Echo",
  "name" : "Echo",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Echo",
      "targets" : [
        "Echo"
      ],
      "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",
        "Context Descriptor/FieldDescriptor.swift",
        "Context Descriptor/GenericContext.swift",
        "Context Descriptor/ModuleDescriptor.swift",
        "Context Descriptor/ProtocolDescriptor.swift",
        "Context Descriptor/StructDescriptor.swift",
        "EchoTests.swift",
        "Metadata/ClassMetadata.swift",
        "Metadata/EnumMetadata.swift",
        "Metadata/ExistentialMetadata.swift",
        "Metadata/ExistentialMetatypeMetadata.swift",
        "Metadata/FunctionMetadata.swift",
        "Metadata/MetadataAccessFunction.swift",
        "Metadata/MetatypeMetadata.swift",
        "Metadata/ObjCClassWrapperMetadata.swift",
        "Metadata/OpaqueMetadata.swift",
        "Metadata/StructMetadata.swift",
        "Metadata/TupleMetadata.swift",
        "Runtime/ConformanceDescriptor.swift",
        "Runtime/ExistentialContainer.swift",
        "Runtime/ImageInspection.swift",
        "Utils/Misc.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Echo"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Echo",
      "module_type" : "SwiftTarget",
      "name" : "Echo",
      "path" : "Sources/Echo",
      "product_dependencies" : [
        "Atomics"
      ],
      "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/OpaqueDescriptor.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/ConformanceDescriptor.swift",
        "Runtime/ExistentialContainer.swift",
        "Runtime/Functions.swift",
        "Runtime/HeapObject.swift",
        "Runtime/ImageInspection.swift",
        "Runtime/KeyPaths.swift",
        "Runtime/KnownMetadata.swift",
        "Runtime/RuntimeValues.swift",
        "Runtime/WitnessTable.swift",
        "Utils/FieldType.swift",
        "Utils/Misc.swift",
        "Utils/RelativeDirectPointer.swift",
        "Utils/RelativeIndirectPointer.swift",
        "Utils/RelativeIndirectablePointer.swift",
        "Utils/RelativeIndirectablePointerIntPair.swift",
        "Utils/RelativePointer.swift",
        "Utils/SignedPointer.swift"
      ],
      "target_dependencies" : [
        "CEcho"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CEcho",
      "module_type" : "ClangTarget",
      "name" : "CEcho",
      "path" : "Sources/CEcho",
      "product_memberships" : [
        "Echo"
      ],
      "sources" : [
        "CallAccessor.c",
        "Functions.c",
        "ImageInspectionELF.c",
        "ImageInspectionMachO.c",
        "KnownMetadata.c",
        "ValueWitnessTable.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.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...
[0/10] Write sources
[2/10] Compiling CEcho ValueWitnessTable.c
[3/10] Compiling CEcho ImageInspectionELF.c
[4/10] Compiling CEcho Functions.c
[5/10] Compiling CEcho CallAccessor.c
[6/10] Compiling CEcho KnownMetadata.c
[7/10] Write swift-version-2F0A5646E1D333AE.txt
[8/10] Compiling _AtomicsShims.c
[10/22] Compiling Atomics HighLevelTypes.swift
[11/22] Compiling Atomics AtomicLazyReference.swift
[12/23] Compiling Atomics DoubleWord.swift
[13/23] Compiling Atomics AtomicBool.swift
[14/23] Compiling Atomics AtomicOptional.swift
[15/23] Compiling Atomics AtomicRawRepresentable.swift
[15/23] Compiling CEcho ImageInspectionMachO.c
[17/23] Compiling Atomics PointerConformances.swift
[18/23] Emitting module Atomics
[19/23] Compiling Atomics AtomicStrongReference.swift
[20/23] Compiling Atomics AtomicInteger.swift
[21/23] Compiling Atomics AtomicMemoryOrderings.swift
[22/23] Compiling Atomics AtomicValue.swift
[23/23] Compiling Atomics IntegerConformances.swift
[24/70] Emitting module Echo
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Metadata/TypeMetadata.swift:164:5: warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
162 |
163 | let mangledNameLock = NSLock()
164 | var mangledNames = [UnsafeRawPointer: Any.Type?]()
    |     |- warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'mangledNames' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'mangledNames' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
165 |
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:26:2: warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 24 | }
 25 |
 26 | @_silgen_name("swift_allocBox")
    |  `- warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 27 | public func swift_allocBox(for type: Any.Type) -> BoxPair
 28 |
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:33:2: warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 31 | }
 32 |
 33 | @_silgen_name("swift_makeBoxUnique")
    |  `- warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 34 | func _swift_makeBoxUnique(
 35 |     for buffer: UnsafeRawPointer,
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:56:5: warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 54 |
 55 | let protocolLock = NSLock()
 56 | var _protocols = Set<UnsafeRawPointer>()
    |     |- warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_protocols' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_protocols' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 57 |
 58 | @_cdecl("registerProtocols")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:75:5: warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 73 |
 74 | let conformanceLock = NSLock()
 75 | var conformances = [UnsafeRawPointer: [ConformanceDescriptor]]()
    |     |- warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'conformances' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'conformances' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 76 |
 77 | @_cdecl("registerProtocolConformances")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:137:5: warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
135 |
136 | let typeLock = NSLock()
137 | var _types = Set<UnsafeRawPointer>()
    |     |- warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_types' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_types' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | @_cdecl("registerTypeMetadata")
[25/75] Compiling Echo StructDescriptor.swift
[26/75] Compiling Echo TypeContextDescriptor.swift
[27/75] Compiling Echo Echo.swift
[28/75] Compiling Echo ClassMetadata.swift
[29/75] Compiling Echo EnumMetadata.swift
[30/75] Compiling Echo RelativeIndirectPointer.swift
[31/75] Compiling Echo RelativeIndirectablePointer.swift
[32/75] Compiling Echo RelativeIndirectablePointerIntPair.swift
[33/75] Compiling Echo RelativePointer.swift
[34/75] Compiling Echo SignedPointer.swift
[35/75] Compiling Echo EnumValueWitnessTable.swift
[36/75] Compiling Echo ExistentialMetadata.swift
[37/75] Compiling Echo ExistentialMetatypeMetadata.swift
[38/75] Compiling Echo ForeignClassMetadata.swift
[39/75] Compiling Echo FunctionMetadata.swift
[40/75] Compiling Echo AnonymousDescriptor.swift
[41/75] Compiling Echo ClassDescriptor.swift
[42/75] Compiling Echo ContextDescriptor.swift
[43/75] Compiling Echo ContextDescriptorValues.swift
[44/75] Compiling Echo EnumDescriptor.swift
[45/75] Compiling Echo ExtensionDescriptor.swift
[46/75] Compiling Echo MetadataValues.swift
[47/75] Compiling Echo MetatypeMetadata.swift
[48/75] Compiling Echo ObjCClassWrapperMetadata.swift
[49/75] Compiling Echo OpaqueMetadata.swift
[50/75] Compiling Echo StructMetadata.swift
[51/75] Compiling Echo FieldDescriptor.swift
[52/75] Compiling Echo GenericContext.swift
[53/75] Compiling Echo ModuleDescriptor.swift
[54/75] Compiling Echo OpaqueDescriptor.swift
[55/75] Compiling Echo ProtocolDescriptor.swift
[56/75] Compiling Echo RuntimeValues.swift
[57/75] Compiling Echo WitnessTable.swift
[58/75] Compiling Echo FieldType.swift
[59/75] Compiling Echo Misc.swift
[60/75] Compiling Echo RelativeDirectPointer.swift
[61/75] Compiling Echo Functions.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:26:2: warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 24 | }
 25 |
 26 | @_silgen_name("swift_allocBox")
    |  `- warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 27 | public func swift_allocBox(for type: Any.Type) -> BoxPair
 28 |
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:33:2: warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 31 | }
 32 |
 33 | @_silgen_name("swift_makeBoxUnique")
    |  `- warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 34 | func _swift_makeBoxUnique(
 35 |     for buffer: UnsafeRawPointer,
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:56:5: warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 54 |
 55 | let protocolLock = NSLock()
 56 | var _protocols = Set<UnsafeRawPointer>()
    |     |- warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_protocols' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_protocols' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 57 |
 58 | @_cdecl("registerProtocols")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:75:5: warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 73 |
 74 | let conformanceLock = NSLock()
 75 | var conformances = [UnsafeRawPointer: [ConformanceDescriptor]]()
    |     |- warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'conformances' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'conformances' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 76 |
 77 | @_cdecl("registerProtocolConformances")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:137:5: warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
135 |
136 | let typeLock = NSLock()
137 | var _types = Set<UnsafeRawPointer>()
    |     |- warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_types' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_types' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | @_cdecl("registerTypeMetadata")
[62/75] Compiling Echo HeapObject.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:26:2: warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 24 | }
 25 |
 26 | @_silgen_name("swift_allocBox")
    |  `- warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 27 | public func swift_allocBox(for type: Any.Type) -> BoxPair
 28 |
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:33:2: warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 31 | }
 32 |
 33 | @_silgen_name("swift_makeBoxUnique")
    |  `- warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 34 | func _swift_makeBoxUnique(
 35 |     for buffer: UnsafeRawPointer,
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:56:5: warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 54 |
 55 | let protocolLock = NSLock()
 56 | var _protocols = Set<UnsafeRawPointer>()
    |     |- warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_protocols' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_protocols' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 57 |
 58 | @_cdecl("registerProtocols")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:75:5: warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 73 |
 74 | let conformanceLock = NSLock()
 75 | var conformances = [UnsafeRawPointer: [ConformanceDescriptor]]()
    |     |- warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'conformances' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'conformances' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 76 |
 77 | @_cdecl("registerProtocolConformances")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:137:5: warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
135 |
136 | let typeLock = NSLock()
137 | var _types = Set<UnsafeRawPointer>()
    |     |- warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_types' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_types' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | @_cdecl("registerTypeMetadata")
[63/75] Compiling Echo ImageInspection.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:26:2: warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 24 | }
 25 |
 26 | @_silgen_name("swift_allocBox")
    |  `- warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 27 | public func swift_allocBox(for type: Any.Type) -> BoxPair
 28 |
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:33:2: warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 31 | }
 32 |
 33 | @_silgen_name("swift_makeBoxUnique")
    |  `- warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 34 | func _swift_makeBoxUnique(
 35 |     for buffer: UnsafeRawPointer,
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:56:5: warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 54 |
 55 | let protocolLock = NSLock()
 56 | var _protocols = Set<UnsafeRawPointer>()
    |     |- warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_protocols' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_protocols' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 57 |
 58 | @_cdecl("registerProtocols")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:75:5: warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 73 |
 74 | let conformanceLock = NSLock()
 75 | var conformances = [UnsafeRawPointer: [ConformanceDescriptor]]()
    |     |- warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'conformances' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'conformances' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 76 |
 77 | @_cdecl("registerProtocolConformances")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:137:5: warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
135 |
136 | let typeLock = NSLock()
137 | var _types = Set<UnsafeRawPointer>()
    |     |- warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_types' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_types' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | @_cdecl("registerTypeMetadata")
[64/75] Compiling Echo KeyPaths.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:26:2: warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 24 | }
 25 |
 26 | @_silgen_name("swift_allocBox")
    |  `- warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 27 | public func swift_allocBox(for type: Any.Type) -> BoxPair
 28 |
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:33:2: warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 31 | }
 32 |
 33 | @_silgen_name("swift_makeBoxUnique")
    |  `- warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 34 | func _swift_makeBoxUnique(
 35 |     for buffer: UnsafeRawPointer,
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:56:5: warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 54 |
 55 | let protocolLock = NSLock()
 56 | var _protocols = Set<UnsafeRawPointer>()
    |     |- warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_protocols' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_protocols' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 57 |
 58 | @_cdecl("registerProtocols")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:75:5: warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 73 |
 74 | let conformanceLock = NSLock()
 75 | var conformances = [UnsafeRawPointer: [ConformanceDescriptor]]()
    |     |- warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'conformances' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'conformances' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 76 |
 77 | @_cdecl("registerProtocolConformances")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:137:5: warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
135 |
136 | let typeLock = NSLock()
137 | var _types = Set<UnsafeRawPointer>()
    |     |- warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_types' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_types' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | @_cdecl("registerTypeMetadata")
[65/75] Compiling Echo KnownMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:26:2: warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 24 | }
 25 |
 26 | @_silgen_name("swift_allocBox")
    |  `- warning: symbol name 'swift_allocBox' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 27 | public func swift_allocBox(for type: Any.Type) -> BoxPair
 28 |
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/Functions.swift:33:2: warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 31 | }
 32 |
 33 | @_silgen_name("swift_makeBoxUnique")
    |  `- warning: symbol name 'swift_makeBoxUnique' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 34 | func _swift_makeBoxUnique(
 35 |     for buffer: UnsafeRawPointer,
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:56:5: warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 54 |
 55 | let protocolLock = NSLock()
 56 | var _protocols = Set<UnsafeRawPointer>()
    |     |- warning: var '_protocols' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_protocols' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_protocols' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 57 |
 58 | @_cdecl("registerProtocols")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:75:5: warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 73 |
 74 | let conformanceLock = NSLock()
 75 | var conformances = [UnsafeRawPointer: [ConformanceDescriptor]]()
    |     |- warning: var 'conformances' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'conformances' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'conformances' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 76 |
 77 | @_cdecl("registerProtocolConformances")
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Runtime/ImageInspection.swift:137:5: warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
135 |
136 | let typeLock = NSLock()
137 | var _types = Set<UnsafeRawPointer>()
    |     |- warning: var '_types' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert '_types' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var '_types' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | @_cdecl("registerTypeMetadata")
[66/75] Compiling Echo HeapGenericLocalVariableMetadata.swift
[67/75] Compiling Echo HeapLocalVariableMetadata.swift
[68/75] Compiling Echo Metadata.swift
[69/75] Compiling Echo MetadataAccessFunction.swift
[70/75] Compiling Echo MetadataRequest.swift
[71/75] Compiling Echo TupleMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Metadata/TypeMetadata.swift:164:5: warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
162 |
163 | let mangledNameLock = NSLock()
164 | var mangledNames = [UnsafeRawPointer: Any.Type?]()
    |     |- warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'mangledNames' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'mangledNames' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
165 |
[72/75] Compiling Echo TypeMetadata.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Metadata/TypeMetadata.swift:164:5: warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
162 |
163 | let mangledNameLock = NSLock()
164 | var mangledNames = [UnsafeRawPointer: Any.Type?]()
    |     |- warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'mangledNames' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'mangledNames' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
165 |
[73/75] Compiling Echo ValueWitnessTable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Metadata/TypeMetadata.swift:164:5: warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
162 |
163 | let mangledNameLock = NSLock()
164 | var mangledNames = [UnsafeRawPointer: Any.Type?]()
    |     |- warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'mangledNames' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'mangledNames' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
165 |
[74/75] Compiling Echo ConformanceDescriptor.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Metadata/TypeMetadata.swift:164:5: warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
162 |
163 | let mangledNameLock = NSLock()
164 | var mangledNames = [UnsafeRawPointer: Any.Type?]()
    |     |- warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'mangledNames' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'mangledNames' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
165 |
[75/75] Compiling Echo ExistentialContainer.swift
/Users/admin/builder/spi-builder-workspace/Sources/Echo/Metadata/TypeMetadata.swift:164:5: warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
162 |
163 | let mangledNameLock = NSLock()
164 | var mangledNames = [UnsafeRawPointer: Any.Type?]()
    |     |- warning: var 'mangledNames' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: convert 'mangledNames' to a 'let' constant to make 'Sendable' shared state immutable
    |     |- note: add '@MainActor' to make var 'mangledNames' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
165 |
Build complete! (5.94s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-atomics",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.0.1",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-atomics.git"
    }
  ],
  "manifest_display_name" : "Echo",
  "name" : "Echo",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Echo",
      "targets" : [
        "Echo"
      ],
      "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",
        "Context Descriptor/FieldDescriptor.swift",
        "Context Descriptor/GenericContext.swift",
        "Context Descriptor/ModuleDescriptor.swift",
        "Context Descriptor/ProtocolDescriptor.swift",
        "Context Descriptor/StructDescriptor.swift",
        "EchoTests.swift",
        "Metadata/ClassMetadata.swift",
        "Metadata/EnumMetadata.swift",
        "Metadata/ExistentialMetadata.swift",
        "Metadata/ExistentialMetatypeMetadata.swift",
        "Metadata/FunctionMetadata.swift",
        "Metadata/MetadataAccessFunction.swift",
        "Metadata/MetatypeMetadata.swift",
        "Metadata/ObjCClassWrapperMetadata.swift",
        "Metadata/OpaqueMetadata.swift",
        "Metadata/StructMetadata.swift",
        "Metadata/TupleMetadata.swift",
        "Runtime/ConformanceDescriptor.swift",
        "Runtime/ExistentialContainer.swift",
        "Runtime/ImageInspection.swift",
        "Utils/Misc.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Echo"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Echo",
      "module_type" : "SwiftTarget",
      "name" : "Echo",
      "path" : "Sources/Echo",
      "product_dependencies" : [
        "Atomics"
      ],
      "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/OpaqueDescriptor.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/ConformanceDescriptor.swift",
        "Runtime/ExistentialContainer.swift",
        "Runtime/Functions.swift",
        "Runtime/HeapObject.swift",
        "Runtime/ImageInspection.swift",
        "Runtime/KeyPaths.swift",
        "Runtime/KnownMetadata.swift",
        "Runtime/RuntimeValues.swift",
        "Runtime/WitnessTable.swift",
        "Utils/FieldType.swift",
        "Utils/Misc.swift",
        "Utils/RelativeDirectPointer.swift",
        "Utils/RelativeIndirectPointer.swift",
        "Utils/RelativeIndirectablePointer.swift",
        "Utils/RelativeIndirectablePointerIntPair.swift",
        "Utils/RelativePointer.swift",
        "Utils/SignedPointer.swift"
      ],
      "target_dependencies" : [
        "CEcho"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CEcho",
      "module_type" : "ClangTarget",
      "name" : "CEcho",
      "path" : "Sources/CEcho",
      "product_memberships" : [
        "Echo"
      ],
      "sources" : [
        "CallAccessor.c",
        "Functions.c",
        "ImageInspectionELF.c",
        "ImageInspectionMachO.c",
        "KnownMetadata.c",
        "ValueWitnessTable.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.