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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 cassowary, reference main (553057), with Swift 6.0 for macOS (SPM) on 3 Nov 2024 14:24:57 UTC.

Swift 6 data race errors: 4

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/compnerd/cassowary.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/compnerd/cassowary
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 5530573 gitignore: ignore the default SPM build directory
Cloned https://github.com/compnerd/cassowary.git
Revision (git rev-parse @):
5530573af9b3899143c442a14a7069aa3e5ea33b
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/compnerd/cassowary.git at main
Fetching https://github.com/apple/swift-collections.git
[1/15475] Fetching swift-collections
Fetched https://github.com/apple/swift-collections.git from cache (2.13s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.0.6 (0.68s)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.0.6
========================================
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": "cassowary",
      "name": "cassowary",
      "url": "https://github.com/compnerd/cassowary.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/cassowary",
      "dependencies": [
        {
          "identity": "swift-collections",
          "name": "swift-collections",
          "url": "https://github.com/apple/swift-collections.git",
          "version": "1.0.6",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-collections",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/compnerd/cassowary.git
[1/265] Fetching cassowary
Fetched https://github.com/compnerd/cassowary.git from cache (0.75s)
Fetching https://github.com/apple/swift-collections.git from cache
Fetched https://github.com/apple/swift-collections.git from cache (0.58s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.0.6 (0.04s)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.0.6
Creating working copy for https://github.com/compnerd/cassowary.git
Working copy of https://github.com/compnerd/cassowary.git resolved at main (5530573)
warning: '.resolve-product-dependencies': dependency 'cassowary' is not used by any target
Found 1 product dependencies
  - swift-collections
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/compnerd/cassowary.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...
[0/3] Write sources
[2/3] Write swift-version--7754E27361AE5C74.txt
[4/51] Emitting module OrderedCollections
[5/56] Compiling OrderedCollections _HashTable.swift
[6/56] Compiling OrderedCollections _Hashtable+Header.swift
[7/56] Compiling OrderedCollections OrderedDictionary+Codable.swift
[8/56] Compiling OrderedCollections OrderedDictionary+CustomDebugStringConvertible.swift
[9/56] Compiling OrderedCollections OrderedDictionary+CustomReflectable.swift
[10/56] Compiling OrderedCollections OrderedDictionary+CustomStringConvertible.swift
[11/56] Compiling OrderedCollections _HashTable+Bucket.swift
[12/56] Compiling OrderedCollections _HashTable+BucketIterator.swift
[13/56] Compiling OrderedCollections _HashTable+Constants.swift
[14/56] Compiling OrderedCollections _HashTable+CustomStringConvertible.swift
[15/56] Compiling OrderedCollections _HashTable+Testing.swift
[16/56] Compiling OrderedCollections _HashTable+UnsafeHandle.swift
[17/56] Compiling OrderedCollections OrderedDictionary+Hashable.swift
[18/56] Compiling OrderedCollections OrderedDictionary+Initializers.swift
[19/56] Compiling OrderedCollections OrderedDictionary+Invariants.swift
[20/56] Compiling OrderedCollections OrderedDictionary+Partial MutableCollection.swift
[21/56] Compiling OrderedCollections OrderedDictionary+Partial RangeReplaceableCollection.swift
[22/56] Compiling OrderedCollections OrderedSet+RandomAccessCollection.swift
[23/56] Compiling OrderedCollections OrderedSet+ReserveCapacity.swift
[24/56] Compiling OrderedCollections OrderedSet+Sendable.swift
[25/56] Compiling OrderedCollections OrderedSet+SubSequence.swift
[26/56] Compiling OrderedCollections OrderedSet+Testing.swift
[27/56] Compiling OrderedCollections OrderedDictionary+Deprecations.swift
[28/56] Compiling OrderedCollections OrderedDictionary+Elements+SubSequence.swift
[29/56] Compiling OrderedCollections OrderedDictionary+Elements.swift
[30/56] Compiling OrderedCollections OrderedDictionary+Equatable.swift
[31/56] Compiling OrderedCollections OrderedDictionary+ExpressibleByDictionaryLiteral.swift
[32/56] Compiling OrderedCollections OrderedSet+Partial MutableCollection.swift
[33/56] Compiling OrderedCollections OrderedSet+Partial RangeReplaceableCollection.swift
[34/56] Compiling OrderedCollections OrderedSet+Partial SetAlgebra+Basics.swift
[35/56] Compiling OrderedCollections OrderedSet+Partial SetAlgebra+Operations.swift
[36/56] Compiling OrderedCollections OrderedSet+Partial SetAlgebra+Predicates.swift
[37/56] Compiling OrderedCollections OrderedSet+ExpressibleByArrayLiteral.swift
[38/56] Compiling OrderedCollections OrderedSet+Hashable.swift
[39/56] Compiling OrderedCollections OrderedSet+Initializers.swift
[40/56] Compiling OrderedCollections OrderedSet+Insertions.swift
[41/56] Compiling OrderedCollections OrderedSet+Invariants.swift
[42/56] Compiling OrderedCollections OrderedDictionary+Sendable.swift
[43/56] Compiling OrderedCollections OrderedDictionary+Sequence.swift
[44/56] Compiling OrderedCollections OrderedDictionary+Values.swift
[45/56] Compiling OrderedCollections OrderedDictionary.swift
[46/56] Compiling OrderedCollections OrderedSet+Codable.swift
[47/56] Compiling OrderedCollections OrderedSet+CustomDebugStringConvertible.swift
[48/56] Compiling OrderedCollections OrderedSet+CustomReflectable.swift
[49/56] Compiling OrderedCollections OrderedSet+CustomStringConvertible.swift
[50/56] Compiling OrderedCollections OrderedSet+Diffing.swift
[51/56] Compiling OrderedCollections OrderedSet+Equatable.swift
[52/56] Compiling OrderedCollections OrderedSet+UnorderedView.swift
[53/56] Compiling OrderedCollections OrderedSet+UnstableInternals.swift
[54/56] Compiling OrderedCollections OrderedSet.swift
[55/56] Compiling OrderedCollections RandomAccessCollection+Offsets.swift
[56/56] Compiling OrderedCollections _UnsafeBitset.swift
[57/66] Compiling Cassowary Term.swift
[58/67] Compiling Cassowary Symbol.swift
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Symbol.swift:27:14: warning: static property 'invalid' is not concurrency-safe because non-'Sendable' type 'Symbol' may have shared mutable state; this is an error in the Swift 6 language mode
12 | }
13 |
14 | public struct Symbol {
   |               `- note: consider making struct 'Symbol' conform to the 'Sendable' protocol
15 |   public typealias ID = UInt64
16 |
   :
25 |
26 | extension Symbol {
27 |   static let invalid: Symbol = Symbol(.invalid, 0)
   |              |- warning: static property 'invalid' is not concurrency-safe because non-'Sendable' type 'Symbol' may have shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: annotate 'invalid' 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
28 | }
29 |
[59/67] Compiling Cassowary Errors.swift
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Errors.swift:6:15: warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnsatisfiableConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
 4 | /// The constraint cannot be satisfied.
 5 | public struct UnsatisfiableConstraint: Error {
 6 |   private let constraint: Constraint
   |               `- warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnsatisfiableConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
 7 |   public init(_ constraint: Constraint) {
 8 |     self.constraint = constraint
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Constraint.swift:13:20: note: class 'Constraint' does not conform to the 'Sendable' protocol
11 |
12 | /// Describes a constraint over variables in the system.
13 | public final class Constraint {
   |                    `- note: class 'Constraint' does not conform to the 'Sendable' protocol
14 |   /// The expression that is constrained.
15 |   public let expression: Expression
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Errors.swift:22:15: warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnknownConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
20 | /// The constraint is not currently in the system.
21 | public struct UnknownConstraint: Error {
22 |   private let constraint: Constraint
   |               `- warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnknownConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
23 |   public init(_ constraint: Constraint) {
24 |     self.constraint = constraint
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Constraint.swift:13:20: note: class 'Constraint' does not conform to the 'Sendable' protocol
11 |
12 | /// Describes a constraint over variables in the system.
13 | public final class Constraint {
   |                    `- note: class 'Constraint' does not conform to the 'Sendable' protocol
14 |   /// The expression that is constrained.
15 |   public let expression: Expression
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Errors.swift:38:15: warning: stored property 'constraint' of 'Sendable'-conforming struct 'DuplicateConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
36 | /// The constraint is already in the system.
37 | public struct DuplicateConstraint: Error {
38 |   private let constraint: Constraint
   |               `- warning: stored property 'constraint' of 'Sendable'-conforming struct 'DuplicateConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
39 |   public init(_ constraint: Constraint) {
40 |     self.constraint = constraint
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Constraint.swift:13:20: note: class 'Constraint' does not conform to the 'Sendable' protocol
11 |
12 | /// Describes a constraint over variables in the system.
13 | public final class Constraint {
   |                    `- note: class 'Constraint' does not conform to the 'Sendable' protocol
14 |   /// The expression that is constrained.
15 |   public let expression: Expression
[60/67] Emitting module Cassowary
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Expression.swift:5:1: warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
 3 |
 4 | @_implementationOnly
 5 | import OrderedCollections
   | `- warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
 6 |
 7 | /// An expression is a linear combination of terms and a constant.
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Row.swift:5:1: warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
  3 |
  4 | @_implementationOnly
  5 | import OrderedCollections
    | `- warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
  6 |
  7 | internal final class Row {
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Errors.swift:6:15: warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnsatisfiableConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
 4 | /// The constraint cannot be satisfied.
 5 | public struct UnsatisfiableConstraint: Error {
 6 |   private let constraint: Constraint
   |               `- warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnsatisfiableConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
 7 |   public init(_ constraint: Constraint) {
 8 |     self.constraint = constraint
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Constraint.swift:13:20: note: class 'Constraint' does not conform to the 'Sendable' protocol
11 |
12 | /// Describes a constraint over variables in the system.
13 | public final class Constraint {
   |                    `- note: class 'Constraint' does not conform to the 'Sendable' protocol
14 |   /// The expression that is constrained.
15 |   public let expression: Expression
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Errors.swift:22:15: warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnknownConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
20 | /// The constraint is not currently in the system.
21 | public struct UnknownConstraint: Error {
22 |   private let constraint: Constraint
   |               `- warning: stored property 'constraint' of 'Sendable'-conforming struct 'UnknownConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
23 |   public init(_ constraint: Constraint) {
24 |     self.constraint = constraint
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Constraint.swift:13:20: note: class 'Constraint' does not conform to the 'Sendable' protocol
11 |
12 | /// Describes a constraint over variables in the system.
13 | public final class Constraint {
   |                    `- note: class 'Constraint' does not conform to the 'Sendable' protocol
14 |   /// The expression that is constrained.
15 |   public let expression: Expression
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Errors.swift:38:15: warning: stored property 'constraint' of 'Sendable'-conforming struct 'DuplicateConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
36 | /// The constraint is already in the system.
37 | public struct DuplicateConstraint: Error {
38 |   private let constraint: Constraint
   |               `- warning: stored property 'constraint' of 'Sendable'-conforming struct 'DuplicateConstraint' has non-sendable type 'Constraint'; this is an error in the Swift 6 language mode
39 |   public init(_ constraint: Constraint) {
40 |     self.constraint = constraint
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Constraint.swift:13:20: note: class 'Constraint' does not conform to the 'Sendable' protocol
11 |
12 | /// Describes a constraint over variables in the system.
13 | public final class Constraint {
   |                    `- note: class 'Constraint' does not conform to the 'Sendable' protocol
14 |   /// The expression that is constrained.
15 |   public let expression: Expression
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Symbol.swift:27:14: warning: static property 'invalid' is not concurrency-safe because non-'Sendable' type 'Symbol' may have shared mutable state; this is an error in the Swift 6 language mode
12 | }
13 |
14 | public struct Symbol {
   |               `- note: consider making struct 'Symbol' conform to the 'Sendable' protocol
15 |   public typealias ID = UInt64
16 |
   :
25 |
26 | extension Symbol {
27 |   static let invalid: Symbol = Symbol(.invalid, 0)
   |              |- warning: static property 'invalid' is not concurrency-safe because non-'Sendable' type 'Symbol' may have shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: annotate 'invalid' 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
28 | }
29 |
[61/67] Compiling Cassowary Variable.swift
[62/67] Compiling Cassowary Symbolics.swift
[63/67] Compiling Cassowary Expression.swift
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Expression.swift:5:1: warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
 3 |
 4 | @_implementationOnly
 5 | import OrderedCollections
   | `- warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
 6 |
 7 | /// An expression is a linear combination of terms and a constant.
[64/67] Compiling Cassowary Constraint.swift
[65/67] Compiling Cassowary Strength.swift
[66/67] Compiling Cassowary Solver.swift
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Symbol.swift:27:14: warning: static property 'invalid' is not concurrency-safe because non-'Sendable' type 'Symbol' may have shared mutable state; this is an error in the Swift 6 language mode
12 | }
13 |
14 | public struct Symbol {
   |               `- note: consider making struct 'Symbol' conform to the 'Sendable' protocol
15 |   public typealias ID = UInt64
16 |
   :
25 |
26 | extension Symbol {
27 |   static let invalid: Symbol = Symbol(.invalid, 0)
   |              |- warning: static property 'invalid' is not concurrency-safe because non-'Sendable' type 'Symbol' may have shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: annotate 'invalid' 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
28 | }
29 |
[67/67] Compiling Cassowary Row.swift
/Users/admin/builder/spi-builder-workspace/Sources/Cassowary/Row.swift:5:1: warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
  3 |
  4 | @_implementationOnly
  5 | import OrderedCollections
    | `- warning: using '@_implementationOnly' without enabling library evolution for 'Cassowary' may lead to instability during execution
  6 |
  7 | internal final class Row {
Build complete! (10.08s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-collections",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "1.1.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-collections.git"
    }
  ],
  "manifest_display_name" : "cassowary",
  "name" : "cassowary",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "cassowary",
      "targets" : [
        "Cassowary"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CassowaryTests",
      "module_type" : "SwiftTarget",
      "name" : "CassowaryTests",
      "path" : "Tests/CassowaryTests",
      "sources" : [
        "CassowaryTests.swift"
      ],
      "target_dependencies" : [
        "Cassowary"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Cassowary",
      "module_type" : "SwiftTarget",
      "name" : "Cassowary",
      "path" : "Sources/Cassowary",
      "product_dependencies" : [
        "OrderedCollections"
      ],
      "product_memberships" : [
        "cassowary"
      ],
      "sources" : [
        "Constraint.swift",
        "Errors.swift",
        "Expression.swift",
        "Row.swift",
        "Solver.swift",
        "Strength.swift",
        "Symbol.swift",
        "Symbolics.swift",
        "Term.swift",
        "Variable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Done.