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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 LogicKit with Swift 6.0 for Linux.

Swift 6 data race errors: 9

Build Command

bash -c docker run --rm -v "checkouts-4606859-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/kyouko-taiga/logickit.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/kyouko-taiga/logickit
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at f25819a Add a link to the short paper
Cloned https://github.com/kyouko-taiga/logickit.git
Revision (git rev-parse @):
f25819a00278ad9649f57837409940f7721e1fde
SUCCESS checkout https://github.com/kyouko-taiga/logickit.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $workDir
https://github.com/kyouko-taiga/logickit.git
Running build ...
bash -c docker run --rm -v "checkouts-4606859-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
Building for debugging...
[0/7] Write sources
[2/7] Write swift-version-24593BA9C3E375BF.txt
[4/15] Compiling LogicKit Sequence+Extensions.swift
[5/16] Compiling LogicKit Logger.swift
/host/spi-builder-workspace/Sources/LogicKit/Logger.swift:78:14: warning: static property 'foreground' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
 1 | public enum FontColor {
   |             `- note: consider making enum 'FontColor' conform to the 'Sendable' protocol
 2 |
 3 |   case red, green, yellow
   :
76 |   }
77 |
78 |   static let foreground: [FontColor: String] = [
   |              |- warning: static property 'foreground' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: annotate 'foreground' 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
79 |     .red   : "31m",
80 |     .green : "32m",
/host/spi-builder-workspace/Sources/LogicKit/Logger.swift:84:14: warning: static property 'background' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
 1 | public enum FontColor {
   |             `- note: consider making enum 'FontColor' conform to the 'Sendable' protocol
 2 |
 3 |   case red, green, yellow
   :
82 |   ]
83 |
84 |   static let background: [FontColor: String] = [
   |              |- warning: static property 'background' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: annotate 'background' 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
85 |     .red   : "41m",
86 |     .green : "42m",
[6/16] Compiling LogicKit Realizer.swift
[7/16] Compiling LogicKit EDSL.swift
[8/16] Compiling LogicKit BindingMap.swift
[9/16] Emitting module LogicKit
/host/spi-builder-workspace/Sources/LogicKit/Logger.swift:78:14: warning: static property 'foreground' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
 1 | public enum FontColor {
   |             `- note: consider making enum 'FontColor' conform to the 'Sendable' protocol
 2 |
 3 |   case red, green, yellow
   :
76 |   }
77 |
78 |   static let foreground: [FontColor: String] = [
   |              |- warning: static property 'foreground' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: annotate 'foreground' 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
79 |     .red   : "31m",
80 |     .green : "32m",
/host/spi-builder-workspace/Sources/LogicKit/Logger.swift:84:14: warning: static property 'background' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
 1 | public enum FontColor {
   |             `- note: consider making enum 'FontColor' conform to the 'Sendable' protocol
 2 |
 3 |   case red, green, yellow
   :
82 |   ]
83 |
84 |   static let background: [FontColor: String] = [
   |              |- warning: static property 'background' is not concurrency-safe because non-'Sendable' type '[FontColor : String]' may have shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: annotate 'background' 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
85 |     .red   : "41m",
86 |     .green : "42m",
[10/16] Compiling LogicKit AnswerSet.swift
[11/16] Compiling LogicKit KnowledgeBase.swift
[12/16] Compiling LogicKit Term.swift
[13/17] Wrapping AST for LogicKit for debugging
[15/20] Compiling LogicKitBuiltins List.swift
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:7:21: warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  5 |   // MARK: Generators
  6 |
  7 |   public static let empty: Term = .lit("list::empty")
    |                     `- warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  8 |
  9 |   public static func cons(_ head: Term, _ tail: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:1:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  1 | import LogicKit
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  2 |
  3 | public enum List {
    :
  5 |   // MARK: Generators
  6 |
  7 |   public static let empty: Term = .lit("list::empty")
    |                     |- note: annotate 'empty' 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
  8 |
  9 |   public static func cons(_ head: Term, _ tail: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:41:21: warning: static property 'countAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |   public static var axioms: [Term] { return countAxioms + containsAxioms + concatAxioms }
 40 |
 41 |   public static let countAxioms: [Term] = {
    |                     |- warning: static property 'countAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'countAxioms' 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
 42 |     let a: Term = .var("a")
 43 |     let b: Term = .var("b")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:7:21: warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  5 |   // MARK: Generators
  6 |
  7 |   public static let zero: Term = .lit("nat::0")
    |                     `- warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  8 |
  9 |   public static func succ(_ n: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:1:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  1 | import LogicKit
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  2 |
  3 | public enum Nat {
    :
  5 |   // MARK: Generators
  6 |
  7 |   public static let zero: Term = .lit("nat::0")
    |                     |- note: annotate 'zero' 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
  8 |
  9 |   public static func succ(_ n: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:54:21: warning: static property 'containsAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 52 |   }()
 53 |
 54 |   public static let containsAxioms: [Term] = {
    |                     |- warning: static property 'containsAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'containsAxioms' 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
 55 |     let a: Term = .var("a")
 56 |     let b: Term = .var("b")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:67:21: warning: static property 'concatAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 65 |   }()
 66 |
 67 |   public static let concatAxioms: [Term] = {
    |                     |- warning: static property 'concatAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'concatAxioms' 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
 68 |     let a: Term = .var("a")
 69 |     let b: Term = .var("b")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
[16/20] Emitting module LogicKitBuiltins
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:7:21: warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  5 |   // MARK: Generators
  6 |
  7 |   public static let empty: Term = .lit("list::empty")
    |                     `- warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  8 |
  9 |   public static func cons(_ head: Term, _ tail: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:1:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  1 | import LogicKit
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  2 |
  3 | public enum List {
    :
  5 |   // MARK: Generators
  6 |
  7 |   public static let empty: Term = .lit("list::empty")
    |                     |- note: annotate 'empty' 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
  8 |
  9 |   public static func cons(_ head: Term, _ tail: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:41:21: warning: static property 'countAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |   public static var axioms: [Term] { return countAxioms + containsAxioms + concatAxioms }
 40 |
 41 |   public static let countAxioms: [Term] = {
    |                     |- warning: static property 'countAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'countAxioms' 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
 42 |     let a: Term = .var("a")
 43 |     let b: Term = .var("b")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:7:21: warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  5 |   // MARK: Generators
  6 |
  7 |   public static let zero: Term = .lit("nat::0")
    |                     `- warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  8 |
  9 |   public static func succ(_ n: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:1:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  1 | import LogicKit
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  2 |
  3 | public enum Nat {
    :
  5 |   // MARK: Generators
  6 |
  7 |   public static let zero: Term = .lit("nat::0")
    |                     |- note: annotate 'zero' 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
  8 |
  9 |   public static func succ(_ n: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:54:21: warning: static property 'containsAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 52 |   }()
 53 |
 54 |   public static let containsAxioms: [Term] = {
    |                     |- warning: static property 'containsAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'containsAxioms' 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
 55 |     let a: Term = .var("a")
 56 |     let b: Term = .var("b")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/List.swift:67:21: warning: static property 'concatAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 65 |   }()
 66 |
 67 |   public static let concatAxioms: [Term] = {
    |                     |- warning: static property 'concatAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'concatAxioms' 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
 68 |     let a: Term = .var("a")
 69 |     let b: Term = .var("b")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:88:21: warning: static property 'relationAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 86 |   public static var axioms: [Term] { return arithmeticAxioms }
 87 |
 88 |   public static let relationAxioms: [Term] = {
    |                     |- warning: static property 'relationAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'relationAxioms' 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
 89 |     let x: Term = .var("x")
 90 |     let y: Term = .var("y")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:115:21: warning: static property 'arithmeticAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
113 |   }()
114 |
115 |   public static let arithmeticAxioms: [Term] = {
    |                     |- warning: static property 'arithmeticAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'arithmeticAxioms' 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
116 |     let v: Term = .var("v")
117 |     let w: Term = .var("w")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
[17/20] Compiling LogicKitBuiltins Nat.swift
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:7:21: warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  5 |   // MARK: Generators
  6 |
  7 |   public static let zero: Term = .lit("nat::0")
    |                     `- warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Term' may have shared mutable state; this is an error in the Swift 6 language mode
  8 |
  9 |   public static func succ(_ n: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:1:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  1 | import LogicKit
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'LogicKit'
  2 |
  3 | public enum Nat {
    :
  5 |   // MARK: Generators
  6 |
  7 |   public static let zero: Term = .lit("nat::0")
    |                     |- note: annotate 'zero' 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
  8 |
  9 |   public static func succ(_ n: Term) -> Term {
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:88:21: warning: static property 'relationAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
 86 |   public static var axioms: [Term] { return arithmeticAxioms }
 87 |
 88 |   public static let relationAxioms: [Term] = {
    |                     |- warning: static property 'relationAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'relationAxioms' 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
 89 |     let x: Term = .var("x")
 90 |     let y: Term = .var("y")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
/host/spi-builder-workspace/Sources/LogicKitBuiltins/Nat.swift:115:21: warning: static property 'arithmeticAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
113 |   }()
114 |
115 |   public static let arithmeticAxioms: [Term] = {
    |                     |- warning: static property 'arithmeticAxioms' is not concurrency-safe because non-'Sendable' type '[Term]' may have shared mutable state; this is an error in the Swift 6 language mode
    |                     |- note: annotate 'arithmeticAxioms' 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
116 |     let v: Term = .var("v")
117 |     let w: Term = .var("w")
/host/spi-builder-workspace/Sources/LogicKit/Term.swift:1:13: note: enum 'Term' does not conform to the 'Sendable' protocol
  1 | public enum Term {
    |             `- note: enum 'Term' does not conform to the 'Sendable' protocol
  2 |
  3 |   /// A logic variable.
[18/21] Wrapping AST for LogicKitBuiltins for debugging
[19/21] Write Objects.LinkFileList
[20/21] Archiving libLogicKit.a
Build complete! (7.97s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "LogicKit",
  "name" : "LogicKit",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "LogicKit",
      "targets" : [
        "LogicKit",
        "LogicKitBuiltins"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "LogicKitTests",
      "module_type" : "SwiftTarget",
      "name" : "LogicKitTests",
      "path" : "Tests/LogicKitTests",
      "sources" : [
        "BindingMapTests.swift",
        "KnowledgeBaseTests.swift",
        "LogicKitTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "LogicKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LogicKitBuiltinsTests",
      "module_type" : "SwiftTarget",
      "name" : "LogicKitBuiltinsTests",
      "path" : "Tests/LogicKitBuiltinsTests",
      "sources" : [
        "ListTests.swift",
        "NatTests.swift"
      ],
      "target_dependencies" : [
        "LogicKitBuiltins"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LogicKitBuiltins",
      "module_type" : "SwiftTarget",
      "name" : "LogicKitBuiltins",
      "path" : "Sources/LogicKitBuiltins",
      "product_memberships" : [
        "LogicKit"
      ],
      "sources" : [
        "List.swift",
        "Nat.swift"
      ],
      "target_dependencies" : [
        "LogicKit"
      ],
      "type" : "library"
    },
    {
      "c99name" : "LogicKit",
      "module_type" : "SwiftTarget",
      "name" : "LogicKit",
      "path" : "Sources/LogicKit",
      "product_memberships" : [
        "LogicKit"
      ],
      "sources" : [
        "AnswerSet.swift",
        "BindingMap.swift",
        "EDSL.swift",
        "KnowledgeBase.swift",
        "Logger.swift",
        "Realizer.swift",
        "Sequence+Extensions.swift",
        "Term.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.2"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.