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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 SwiftFormat, reference 0.55.6 (aa34bc), with Swift 6.1 for Linux on 2 May 2025 23:05:37 UTC.

Swift 6 data race errors: 282

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1

Build Log

     |                |- note: add '@MainActor' to make static property 'readLine' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  56 |         Swift.readLine(strippingNewline: false)
  57 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:70:13: warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  68 | }
  69 |
  70 | private var quietMode = false
     |             |- warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert 'quietMode' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var 'quietMode' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  71 | private func print(_ message: String, as type: CLI.OutputType = .info) {
  72 |     if !quietMode || [.raw, .content, .error].contains(type) {
/host/spi-builder-workspace/Sources/CommandLine.swift:777:17: warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 775 |             // If no input file, try stdin
 776 |             DispatchQueue.global(qos: .userInitiated).async {
 777 |                 processFromStdin()
     |                 |- warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
     |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 778 |             }
 779 |             // Wait for input
/host/spi-builder-workspace/Sources/CommandLine.swift:682:14: warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 680 |         var input: String?
 681 |         var status = Status.idle
 682 |         func processFromStdin() {
     |              `- warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 683 |             status = .started
 684 |             while let line = CLI.readLine() {
/host/spi-builder-workspace/Sources/FormatRule.swift:50:16: warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
 48 |
 49 |     /// Null rule, used for testing
 50 |     static let none: FormatRule = .init(help: "") { _ in } examples: { nil }
    |                |- warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'none' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 51 |
 52 |     var isDeprecated: Bool {
/host/spi-builder-workspace/Sources/FormatRule.swift:100:12: warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | public let FormatRules = _FormatRules()
    |            |- warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: add '@MainActor' to make let 'FormatRules' part of global actor 'MainActor'
    |            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | private let rulesByName: [String: FormatRule] = {
    :
187 | }
188 |
189 | public struct _FormatRules {
    |               `- note: consider making struct '_FormatRules' conform to the 'Sendable' protocol
190 |     fileprivate init() {}
191 | }
/host/spi-builder-workspace/Sources/FormatRule.swift:102:13: warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
100 | public let FormatRules = _FormatRules()
101 |
102 | private let rulesByName: [String: FormatRule] = {
    |             |- warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'rulesByName' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
103 |     var rules = [String: FormatRule]()
104 |     for (name, rule) in ruleRegistry {
/host/spi-builder-workspace/Sources/FormatRule.swift:134:13: warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
132 | }
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
    |             |- warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_allRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:135:13: warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
    |             |- warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_deprecatedRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:136:13: warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
    |             |- warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_disabledByDefault' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
137 | private let _defaultRules = allRules(except: _disabledByDefault)
138 |
/host/spi-builder-workspace/Sources/FormatRule.swift:137:13: warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
    |             |- warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_defaultRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | public extension _FormatRules {
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2789:16: warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2787 |
2788 | extension Date {
2789 |     static var yearFormatter: (Date) -> String = {
     |                |- warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'yearFormatter' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'yearFormatter' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2790 |         let formatter = DateFormatter()
2791 |         formatter.dateFormat = "yyyy"
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2795:16: warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2793 |     }()
2794 |
2795 |     static var currentYear = yearFormatter(Date())
     |                |- warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'currentYear' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'currentYear' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2796 |
2797 |     var yearString: String {
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:100:13: warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | private let getGitRoot: (URL) -> URL? = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getGitRoot' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |     let dir = "git rev-parse --show-toplevel".shellOutput(cwd: url)
102 |
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:111:13: warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
109 |
110 | // If a file has never been committed, default to the local git user for the repository
111 | private let getDefaultGitInfo: (URL) -> GitFileInfo = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getDefaultGitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
112 |     let name = "git config user.name".shellOutput(cwd: url)
113 |     let email = "git config user.email".shellOutput(cwd: url)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:118:13: warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
116 | }
117 |
118 | private let getMovedFiles: (URL) -> [(from: URL, to: URL)] = memoize({ $0.relativePath }) { root in
    |             |- warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getMovedFiles' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
119 |     let command = "git diff --diff-filter=R --staged --name-status"
120 |     let output = command.shellOutput(cwd: root)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:167:13: warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
165 | }
166 |
167 | private let getCommitInfo: ((String?, URL)) -> GitFileInfo? = memoize(
    |             |- warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getCommitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
168 |     { hash, root in (hash ?? "none") + root.relativePath },
169 |     { hash, root in
/host/spi-builder-workspace/Sources/Inference.swift:1520:16: warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
  46 | }
  47 |
  48 | private struct OptionInferrer {
     |                `- note: consider making struct 'OptionInferrer' conform to the 'Sendable' protocol
  49 |     let fn: (Formatter, inout FormatOptions) -> Void
  50 |
     :
1518 |     }()
1519 |
1520 |     static let byName: [String: OptionInferrer] = {
     |                |- warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: add '@MainActor' to make static property 'byName' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1521 |         var inferrers = [String: OptionInferrer]()
1522 |         for (label, value) in Mirror(reflecting: Inference()).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:383:5: warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
 381 | }
 382 |
 383 | let Descriptors = _Descriptors()
     |     |- warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
     |     |- note: add '@MainActor' to make let 'Descriptors' part of global actor 'MainActor'
     |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     :
 441 | }
 442 |
 443 | struct _Descriptors {
     |        `- note: consider making struct '_Descriptors' conform to the 'Sendable' protocol
 444 |     let lineAfterMarks = OptionDescriptor(
 445 |         argumentName: "lineaftermarks",
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:385:13: warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 383 | let Descriptors = _Descriptors()
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     |             |- warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_allDescriptors' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_allDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 386 |     var descriptors = [OptionDescriptor]()
 387 |     for (label, value) in Mirror(reflecting: Descriptors).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:406:13: warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 404 | }()
 405 |
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
     |             |- warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_descriptorsByName' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_descriptorsByName' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:408:13: warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
  32 | import Foundation
  33 |
  34 | class OptionDescriptor {
     |       `- note: class 'OptionDescriptor' does not conform to the 'Sendable' protocol
  35 |     enum ArgumentType: EnumAssociable {
  36 |         /// index 0 is official value, others are acceptable
     :
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
     |             |- warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: add '@MainActor' to make let '_formattingDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 409 |     let internalDescriptors = Descriptors.internal.map(\.argumentName)
 410 |     return _allDescriptors.filter { !internalDescriptors.contains($0.argumentName) }
/host/spi-builder-workspace/Sources/Options.swift:180:23: warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
 175 |
 176 | /// Version number wrapper
 177 | public struct Version: RawRepresentable, Comparable, ExpressibleByStringLiteral, CustomStringConvertible {
     |               `- note: consider making struct 'Version' conform to the 'Sendable' protocol
 178 |     public let rawValue: String
 179 |
 180 |     public static let undefined = Version(rawValue: "0")!
     |                       |- warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'undefined' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 181 |
 182 |     public init(stringLiteral value: String) {
/host/spi-builder-workspace/Sources/Options.swift:332:16: warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 330 | /// File info, used for constructing header comments
 331 | public struct FileInfo: Equatable, CustomStringConvertible {
 332 |     static var defaultReplacements: [ReplacementKey: ReplacementType] = [
     |                |- warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'defaultReplacements' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'defaultReplacements' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 333 |         .createdDate: .dynamic { info, options in
 334 |             info.creationDate?.format(with: options.dateFormat,
/host/spi-builder-workspace/Sources/Options.swift:709:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 584 | /// Configuration options for formatting. These aren't actually used by the
 585 | /// Formatter class itself, but it makes them available to the format rules.
 586 | public struct FormatOptions: CustomStringConvertible {
     |               `- note: consider making struct 'FormatOptions' conform to the 'Sendable' protocol
 587 |     public var lineAfterMarks: Bool
 588 |     public var indent: String
     :
 707 |     var enabledRules: Set<String> = []
 708 |
 709 |     public static let `default` = FormatOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 710 |
 711 |     public init(lineAfterMarks: Bool = true,
/host/spi-builder-workspace/Sources/Options.swift:985:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 976 |
 977 | /// File enumeration options
 978 | public struct FileOptions {
     |               `- note: consider making struct 'FileOptions' conform to the 'Sendable' protocol
 979 |     public var followSymlinks: Bool
 980 |     public var supportedFileExtensions: [String]
     :
 983 |     public var minVersion: Version
 984 |
 985 |     public static let `default` = FileOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 986 |
 987 |     public init(followSymlinks: Bool = false,
/host/spi-builder-workspace/Sources/Options.swift:1025:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
1016 |
1017 | /// All options
1018 | public struct Options {
     |               `- note: consider making struct 'Options' conform to the 'Sendable' protocol
1019 |     public var fileOptions: FileOptions?
1020 |     public var formatOptions: FormatOptions?
     :
1023 |     public var lint: Bool
1024 |
1025 |     public static let `default` = Options(
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1026 |         fileOptions: .default,
1027 |         formatOptions: .default,
/host/spi-builder-workspace/Sources/RuleRegistry.generated.swift:11:5: warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | /// All of the rules defined in the Rules directory.
 10 | /// **Generated automatically when running tests. Do not modify.**
 11 | let ruleRegistry: [String: FormatRule] = [
    |     |- warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: add '@MainActor' to make let 'ruleRegistry' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 |     "acronyms": .acronyms,
 13 |     "andOperator": .andOperator,
/host/spi-builder-workspace/Sources/FormatRule.swift:34:20: note: class 'FormatRule' does not conform to the 'Sendable' protocol
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
/host/spi-builder-workspace/Sources/CommandLine.swift:49:16: warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  47 |
  48 |     /// Output handler - override this to intercept output from the CLI
  49 |     static var print: (String, OutputType) -> Void = { _, _ in
     |                |- warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'print' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'print' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  50 |         fatalError("No print hook set.")
  51 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:55:16: warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  53 |     /// Input handler - override this to inject input into the CLI
  54 |     /// Injected lines should include the terminating newline character
  55 |     static var readLine: () -> String? = {
     |                |- warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'readLine' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'readLine' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  56 |         Swift.readLine(strippingNewline: false)
  57 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:70:13: warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  68 | }
  69 |
  70 | private var quietMode = false
     |             |- warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert 'quietMode' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var 'quietMode' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  71 | private func print(_ message: String, as type: CLI.OutputType = .info) {
  72 |     if !quietMode || [.raw, .content, .error].contains(type) {
/host/spi-builder-workspace/Sources/CommandLine.swift:777:17: warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 775 |             // If no input file, try stdin
 776 |             DispatchQueue.global(qos: .userInitiated).async {
 777 |                 processFromStdin()
     |                 |- warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
     |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 778 |             }
 779 |             // Wait for input
/host/spi-builder-workspace/Sources/CommandLine.swift:682:14: warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 680 |         var input: String?
 681 |         var status = Status.idle
 682 |         func processFromStdin() {
     |              `- warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 683 |             status = .started
 684 |             while let line = CLI.readLine() {
/host/spi-builder-workspace/Sources/FormatRule.swift:50:16: warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
 48 |
 49 |     /// Null rule, used for testing
 50 |     static let none: FormatRule = .init(help: "") { _ in } examples: { nil }
    |                |- warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'none' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 51 |
 52 |     var isDeprecated: Bool {
/host/spi-builder-workspace/Sources/FormatRule.swift:100:12: warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | public let FormatRules = _FormatRules()
    |            |- warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: add '@MainActor' to make let 'FormatRules' part of global actor 'MainActor'
    |            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | private let rulesByName: [String: FormatRule] = {
    :
187 | }
188 |
189 | public struct _FormatRules {
    |               `- note: consider making struct '_FormatRules' conform to the 'Sendable' protocol
190 |     fileprivate init() {}
191 | }
/host/spi-builder-workspace/Sources/FormatRule.swift:102:13: warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
100 | public let FormatRules = _FormatRules()
101 |
102 | private let rulesByName: [String: FormatRule] = {
    |             |- warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'rulesByName' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
103 |     var rules = [String: FormatRule]()
104 |     for (name, rule) in ruleRegistry {
/host/spi-builder-workspace/Sources/FormatRule.swift:134:13: warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
132 | }
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
    |             |- warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_allRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:135:13: warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
    |             |- warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_deprecatedRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:136:13: warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
    |             |- warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_disabledByDefault' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
137 | private let _defaultRules = allRules(except: _disabledByDefault)
138 |
/host/spi-builder-workspace/Sources/FormatRule.swift:137:13: warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
    |             |- warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_defaultRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | public extension _FormatRules {
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2789:16: warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2787 |
2788 | extension Date {
2789 |     static var yearFormatter: (Date) -> String = {
     |                |- warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'yearFormatter' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'yearFormatter' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2790 |         let formatter = DateFormatter()
2791 |         formatter.dateFormat = "yyyy"
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2795:16: warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2793 |     }()
2794 |
2795 |     static var currentYear = yearFormatter(Date())
     |                |- warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'currentYear' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'currentYear' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2796 |
2797 |     var yearString: String {
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:100:13: warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | private let getGitRoot: (URL) -> URL? = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getGitRoot' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |     let dir = "git rev-parse --show-toplevel".shellOutput(cwd: url)
102 |
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:111:13: warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
109 |
110 | // If a file has never been committed, default to the local git user for the repository
111 | private let getDefaultGitInfo: (URL) -> GitFileInfo = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getDefaultGitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
112 |     let name = "git config user.name".shellOutput(cwd: url)
113 |     let email = "git config user.email".shellOutput(cwd: url)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:118:13: warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
116 | }
117 |
118 | private let getMovedFiles: (URL) -> [(from: URL, to: URL)] = memoize({ $0.relativePath }) { root in
    |             |- warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getMovedFiles' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
119 |     let command = "git diff --diff-filter=R --staged --name-status"
120 |     let output = command.shellOutput(cwd: root)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:167:13: warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
165 | }
166 |
167 | private let getCommitInfo: ((String?, URL)) -> GitFileInfo? = memoize(
    |             |- warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getCommitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
168 |     { hash, root in (hash ?? "none") + root.relativePath },
169 |     { hash, root in
/host/spi-builder-workspace/Sources/Inference.swift:1520:16: warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
  46 | }
  47 |
  48 | private struct OptionInferrer {
     |                `- note: consider making struct 'OptionInferrer' conform to the 'Sendable' protocol
  49 |     let fn: (Formatter, inout FormatOptions) -> Void
  50 |
     :
1518 |     }()
1519 |
1520 |     static let byName: [String: OptionInferrer] = {
     |                |- warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: add '@MainActor' to make static property 'byName' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1521 |         var inferrers = [String: OptionInferrer]()
1522 |         for (label, value) in Mirror(reflecting: Inference()).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:383:5: warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
 381 | }
 382 |
 383 | let Descriptors = _Descriptors()
     |     |- warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
     |     |- note: add '@MainActor' to make let 'Descriptors' part of global actor 'MainActor'
     |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     :
 441 | }
 442 |
 443 | struct _Descriptors {
     |        `- note: consider making struct '_Descriptors' conform to the 'Sendable' protocol
 444 |     let lineAfterMarks = OptionDescriptor(
 445 |         argumentName: "lineaftermarks",
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:385:13: warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 383 | let Descriptors = _Descriptors()
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     |             |- warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_allDescriptors' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_allDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 386 |     var descriptors = [OptionDescriptor]()
 387 |     for (label, value) in Mirror(reflecting: Descriptors).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:406:13: warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 404 | }()
 405 |
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
     |             |- warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_descriptorsByName' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_descriptorsByName' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:408:13: warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
  32 | import Foundation
  33 |
  34 | class OptionDescriptor {
     |       `- note: class 'OptionDescriptor' does not conform to the 'Sendable' protocol
  35 |     enum ArgumentType: EnumAssociable {
  36 |         /// index 0 is official value, others are acceptable
     :
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
     |             |- warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: add '@MainActor' to make let '_formattingDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 409 |     let internalDescriptors = Descriptors.internal.map(\.argumentName)
 410 |     return _allDescriptors.filter { !internalDescriptors.contains($0.argumentName) }
/host/spi-builder-workspace/Sources/Options.swift:180:23: warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
 175 |
 176 | /// Version number wrapper
 177 | public struct Version: RawRepresentable, Comparable, ExpressibleByStringLiteral, CustomStringConvertible {
     |               `- note: consider making struct 'Version' conform to the 'Sendable' protocol
 178 |     public let rawValue: String
 179 |
 180 |     public static let undefined = Version(rawValue: "0")!
     |                       |- warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'undefined' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 181 |
 182 |     public init(stringLiteral value: String) {
/host/spi-builder-workspace/Sources/Options.swift:332:16: warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 330 | /// File info, used for constructing header comments
 331 | public struct FileInfo: Equatable, CustomStringConvertible {
 332 |     static var defaultReplacements: [ReplacementKey: ReplacementType] = [
     |                |- warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'defaultReplacements' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'defaultReplacements' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 333 |         .createdDate: .dynamic { info, options in
 334 |             info.creationDate?.format(with: options.dateFormat,
/host/spi-builder-workspace/Sources/Options.swift:709:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 584 | /// Configuration options for formatting. These aren't actually used by the
 585 | /// Formatter class itself, but it makes them available to the format rules.
 586 | public struct FormatOptions: CustomStringConvertible {
     |               `- note: consider making struct 'FormatOptions' conform to the 'Sendable' protocol
 587 |     public var lineAfterMarks: Bool
 588 |     public var indent: String
     :
 707 |     var enabledRules: Set<String> = []
 708 |
 709 |     public static let `default` = FormatOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 710 |
 711 |     public init(lineAfterMarks: Bool = true,
/host/spi-builder-workspace/Sources/Options.swift:985:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 976 |
 977 | /// File enumeration options
 978 | public struct FileOptions {
     |               `- note: consider making struct 'FileOptions' conform to the 'Sendable' protocol
 979 |     public var followSymlinks: Bool
 980 |     public var supportedFileExtensions: [String]
     :
 983 |     public var minVersion: Version
 984 |
 985 |     public static let `default` = FileOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 986 |
 987 |     public init(followSymlinks: Bool = false,
/host/spi-builder-workspace/Sources/Options.swift:1025:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
1016 |
1017 | /// All options
1018 | public struct Options {
     |               `- note: consider making struct 'Options' conform to the 'Sendable' protocol
1019 |     public var fileOptions: FileOptions?
1020 |     public var formatOptions: FormatOptions?
     :
1023 |     public var lint: Bool
1024 |
1025 |     public static let `default` = Options(
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1026 |         fileOptions: .default,
1027 |         formatOptions: .default,
/host/spi-builder-workspace/Sources/RuleRegistry.generated.swift:11:5: warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | /// All of the rules defined in the Rules directory.
 10 | /// **Generated automatically when running tests. Do not modify.**
 11 | let ruleRegistry: [String: FormatRule] = [
    |     |- warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: add '@MainActor' to make let 'ruleRegistry' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 |     "acronyms": .acronyms,
 13 |     "andOperator": .andOperator,
/host/spi-builder-workspace/Sources/FormatRule.swift:34:20: note: class 'FormatRule' does not conform to the 'Sendable' protocol
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
/host/spi-builder-workspace/Sources/CommandLine.swift:49:16: warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  47 |
  48 |     /// Output handler - override this to intercept output from the CLI
  49 |     static var print: (String, OutputType) -> Void = { _, _ in
     |                |- warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'print' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'print' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  50 |         fatalError("No print hook set.")
  51 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:55:16: warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  53 |     /// Input handler - override this to inject input into the CLI
  54 |     /// Injected lines should include the terminating newline character
  55 |     static var readLine: () -> String? = {
     |                |- warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'readLine' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'readLine' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  56 |         Swift.readLine(strippingNewline: false)
  57 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:70:13: warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  68 | }
  69 |
  70 | private var quietMode = false
     |             |- warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert 'quietMode' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var 'quietMode' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  71 | private func print(_ message: String, as type: CLI.OutputType = .info) {
  72 |     if !quietMode || [.raw, .content, .error].contains(type) {
/host/spi-builder-workspace/Sources/CommandLine.swift:777:17: warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 775 |             // If no input file, try stdin
 776 |             DispatchQueue.global(qos: .userInitiated).async {
 777 |                 processFromStdin()
     |                 |- warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
     |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 778 |             }
 779 |             // Wait for input
/host/spi-builder-workspace/Sources/CommandLine.swift:682:14: warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 680 |         var input: String?
 681 |         var status = Status.idle
 682 |         func processFromStdin() {
     |              `- warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 683 |             status = .started
 684 |             while let line = CLI.readLine() {
/host/spi-builder-workspace/Sources/FormatRule.swift:50:16: warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
 48 |
 49 |     /// Null rule, used for testing
 50 |     static let none: FormatRule = .init(help: "") { _ in } examples: { nil }
    |                |- warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'none' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 51 |
 52 |     var isDeprecated: Bool {
/host/spi-builder-workspace/Sources/FormatRule.swift:100:12: warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | public let FormatRules = _FormatRules()
    |            |- warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: add '@MainActor' to make let 'FormatRules' part of global actor 'MainActor'
    |            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | private let rulesByName: [String: FormatRule] = {
    :
187 | }
188 |
189 | public struct _FormatRules {
    |               `- note: consider making struct '_FormatRules' conform to the 'Sendable' protocol
190 |     fileprivate init() {}
191 | }
/host/spi-builder-workspace/Sources/FormatRule.swift:102:13: warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
100 | public let FormatRules = _FormatRules()
101 |
102 | private let rulesByName: [String: FormatRule] = {
    |             |- warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'rulesByName' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
103 |     var rules = [String: FormatRule]()
104 |     for (name, rule) in ruleRegistry {
/host/spi-builder-workspace/Sources/FormatRule.swift:134:13: warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
132 | }
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
    |             |- warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_allRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:135:13: warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
    |             |- warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_deprecatedRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:136:13: warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
    |             |- warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_disabledByDefault' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
137 | private let _defaultRules = allRules(except: _disabledByDefault)
138 |
/host/spi-builder-workspace/Sources/FormatRule.swift:137:13: warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
    |             |- warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_defaultRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | public extension _FormatRules {
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2789:16: warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2787 |
2788 | extension Date {
2789 |     static var yearFormatter: (Date) -> String = {
     |                |- warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'yearFormatter' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'yearFormatter' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2790 |         let formatter = DateFormatter()
2791 |         formatter.dateFormat = "yyyy"
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2795:16: warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2793 |     }()
2794 |
2795 |     static var currentYear = yearFormatter(Date())
     |                |- warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'currentYear' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'currentYear' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2796 |
2797 |     var yearString: String {
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:100:13: warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | private let getGitRoot: (URL) -> URL? = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getGitRoot' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |     let dir = "git rev-parse --show-toplevel".shellOutput(cwd: url)
102 |
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:111:13: warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
109 |
110 | // If a file has never been committed, default to the local git user for the repository
111 | private let getDefaultGitInfo: (URL) -> GitFileInfo = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getDefaultGitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
112 |     let name = "git config user.name".shellOutput(cwd: url)
113 |     let email = "git config user.email".shellOutput(cwd: url)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:118:13: warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
116 | }
117 |
118 | private let getMovedFiles: (URL) -> [(from: URL, to: URL)] = memoize({ $0.relativePath }) { root in
    |             |- warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getMovedFiles' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
119 |     let command = "git diff --diff-filter=R --staged --name-status"
120 |     let output = command.shellOutput(cwd: root)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:167:13: warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
165 | }
166 |
167 | private let getCommitInfo: ((String?, URL)) -> GitFileInfo? = memoize(
    |             |- warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getCommitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
168 |     { hash, root in (hash ?? "none") + root.relativePath },
169 |     { hash, root in
/host/spi-builder-workspace/Sources/Inference.swift:1520:16: warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
  46 | }
  47 |
  48 | private struct OptionInferrer {
     |                `- note: consider making struct 'OptionInferrer' conform to the 'Sendable' protocol
  49 |     let fn: (Formatter, inout FormatOptions) -> Void
  50 |
     :
1518 |     }()
1519 |
1520 |     static let byName: [String: OptionInferrer] = {
     |                |- warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: add '@MainActor' to make static property 'byName' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1521 |         var inferrers = [String: OptionInferrer]()
1522 |         for (label, value) in Mirror(reflecting: Inference()).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:383:5: warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
 381 | }
 382 |
 383 | let Descriptors = _Descriptors()
     |     |- warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
     |     |- note: add '@MainActor' to make let 'Descriptors' part of global actor 'MainActor'
     |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     :
 441 | }
 442 |
 443 | struct _Descriptors {
     |        `- note: consider making struct '_Descriptors' conform to the 'Sendable' protocol
 444 |     let lineAfterMarks = OptionDescriptor(
 445 |         argumentName: "lineaftermarks",
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:385:13: warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 383 | let Descriptors = _Descriptors()
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     |             |- warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_allDescriptors' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_allDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 386 |     var descriptors = [OptionDescriptor]()
 387 |     for (label, value) in Mirror(reflecting: Descriptors).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:406:13: warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 404 | }()
 405 |
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
     |             |- warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_descriptorsByName' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_descriptorsByName' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:408:13: warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
  32 | import Foundation
  33 |
  34 | class OptionDescriptor {
     |       `- note: class 'OptionDescriptor' does not conform to the 'Sendable' protocol
  35 |     enum ArgumentType: EnumAssociable {
  36 |         /// index 0 is official value, others are acceptable
     :
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
     |             |- warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: add '@MainActor' to make let '_formattingDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 409 |     let internalDescriptors = Descriptors.internal.map(\.argumentName)
 410 |     return _allDescriptors.filter { !internalDescriptors.contains($0.argumentName) }
/host/spi-builder-workspace/Sources/Options.swift:180:23: warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
 175 |
 176 | /// Version number wrapper
 177 | public struct Version: RawRepresentable, Comparable, ExpressibleByStringLiteral, CustomStringConvertible {
     |               `- note: consider making struct 'Version' conform to the 'Sendable' protocol
 178 |     public let rawValue: String
 179 |
 180 |     public static let undefined = Version(rawValue: "0")!
     |                       |- warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'undefined' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 181 |
 182 |     public init(stringLiteral value: String) {
/host/spi-builder-workspace/Sources/Options.swift:332:16: warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 330 | /// File info, used for constructing header comments
 331 | public struct FileInfo: Equatable, CustomStringConvertible {
 332 |     static var defaultReplacements: [ReplacementKey: ReplacementType] = [
     |                |- warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'defaultReplacements' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'defaultReplacements' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 333 |         .createdDate: .dynamic { info, options in
 334 |             info.creationDate?.format(with: options.dateFormat,
/host/spi-builder-workspace/Sources/Options.swift:709:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 584 | /// Configuration options for formatting. These aren't actually used by the
 585 | /// Formatter class itself, but it makes them available to the format rules.
 586 | public struct FormatOptions: CustomStringConvertible {
     |               `- note: consider making struct 'FormatOptions' conform to the 'Sendable' protocol
 587 |     public var lineAfterMarks: Bool
 588 |     public var indent: String
     :
 707 |     var enabledRules: Set<String> = []
 708 |
 709 |     public static let `default` = FormatOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 710 |
 711 |     public init(lineAfterMarks: Bool = true,
/host/spi-builder-workspace/Sources/Options.swift:985:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 976 |
 977 | /// File enumeration options
 978 | public struct FileOptions {
     |               `- note: consider making struct 'FileOptions' conform to the 'Sendable' protocol
 979 |     public var followSymlinks: Bool
 980 |     public var supportedFileExtensions: [String]
     :
 983 |     public var minVersion: Version
 984 |
 985 |     public static let `default` = FileOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 986 |
 987 |     public init(followSymlinks: Bool = false,
/host/spi-builder-workspace/Sources/Options.swift:1025:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
1016 |
1017 | /// All options
1018 | public struct Options {
     |               `- note: consider making struct 'Options' conform to the 'Sendable' protocol
1019 |     public var fileOptions: FileOptions?
1020 |     public var formatOptions: FormatOptions?
     :
1023 |     public var lint: Bool
1024 |
1025 |     public static let `default` = Options(
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1026 |         fileOptions: .default,
1027 |         formatOptions: .default,
/host/spi-builder-workspace/Sources/RuleRegistry.generated.swift:11:5: warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | /// All of the rules defined in the Rules directory.
 10 | /// **Generated automatically when running tests. Do not modify.**
 11 | let ruleRegistry: [String: FormatRule] = [
    |     |- warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: add '@MainActor' to make let 'ruleRegistry' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 |     "acronyms": .acronyms,
 13 |     "andOperator": .andOperator,
/host/spi-builder-workspace/Sources/FormatRule.swift:34:20: note: class 'FormatRule' does not conform to the 'Sendable' protocol
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
/host/spi-builder-workspace/Sources/CommandLine.swift:49:16: warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  47 |
  48 |     /// Output handler - override this to intercept output from the CLI
  49 |     static var print: (String, OutputType) -> Void = { _, _ in
     |                |- warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'print' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'print' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  50 |         fatalError("No print hook set.")
  51 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:55:16: warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  53 |     /// Input handler - override this to inject input into the CLI
  54 |     /// Injected lines should include the terminating newline character
  55 |     static var readLine: () -> String? = {
     |                |- warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'readLine' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'readLine' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  56 |         Swift.readLine(strippingNewline: false)
  57 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:70:13: warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  68 | }
  69 |
  70 | private var quietMode = false
     |             |- warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert 'quietMode' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var 'quietMode' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  71 | private func print(_ message: String, as type: CLI.OutputType = .info) {
  72 |     if !quietMode || [.raw, .content, .error].contains(type) {
/host/spi-builder-workspace/Sources/CommandLine.swift:777:17: warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 775 |             // If no input file, try stdin
 776 |             DispatchQueue.global(qos: .userInitiated).async {
 777 |                 processFromStdin()
     |                 |- warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
     |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 778 |             }
 779 |             // Wait for input
/host/spi-builder-workspace/Sources/CommandLine.swift:682:14: warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 680 |         var input: String?
 681 |         var status = Status.idle
 682 |         func processFromStdin() {
     |              `- warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 683 |             status = .started
 684 |             while let line = CLI.readLine() {
/host/spi-builder-workspace/Sources/FormatRule.swift:50:16: warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
 48 |
 49 |     /// Null rule, used for testing
 50 |     static let none: FormatRule = .init(help: "") { _ in } examples: { nil }
    |                |- warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'none' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 51 |
 52 |     var isDeprecated: Bool {
/host/spi-builder-workspace/Sources/FormatRule.swift:100:12: warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | public let FormatRules = _FormatRules()
    |            |- warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: add '@MainActor' to make let 'FormatRules' part of global actor 'MainActor'
    |            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | private let rulesByName: [String: FormatRule] = {
    :
187 | }
188 |
189 | public struct _FormatRules {
    |               `- note: consider making struct '_FormatRules' conform to the 'Sendable' protocol
190 |     fileprivate init() {}
191 | }
/host/spi-builder-workspace/Sources/FormatRule.swift:102:13: warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
100 | public let FormatRules = _FormatRules()
101 |
102 | private let rulesByName: [String: FormatRule] = {
    |             |- warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'rulesByName' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
103 |     var rules = [String: FormatRule]()
104 |     for (name, rule) in ruleRegistry {
/host/spi-builder-workspace/Sources/FormatRule.swift:134:13: warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
132 | }
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
    |             |- warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_allRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:135:13: warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
    |             |- warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_deprecatedRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:136:13: warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
    |             |- warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_disabledByDefault' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
137 | private let _defaultRules = allRules(except: _disabledByDefault)
138 |
/host/spi-builder-workspace/Sources/FormatRule.swift:137:13: warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
    |             |- warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_defaultRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | public extension _FormatRules {
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2789:16: warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2787 |
2788 | extension Date {
2789 |     static var yearFormatter: (Date) -> String = {
     |                |- warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'yearFormatter' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'yearFormatter' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2790 |         let formatter = DateFormatter()
2791 |         formatter.dateFormat = "yyyy"
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2795:16: warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2793 |     }()
2794 |
2795 |     static var currentYear = yearFormatter(Date())
     |                |- warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'currentYear' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'currentYear' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2796 |
2797 |     var yearString: String {
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:100:13: warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | private let getGitRoot: (URL) -> URL? = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getGitRoot' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |     let dir = "git rev-parse --show-toplevel".shellOutput(cwd: url)
102 |
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:111:13: warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
109 |
110 | // If a file has never been committed, default to the local git user for the repository
111 | private let getDefaultGitInfo: (URL) -> GitFileInfo = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getDefaultGitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
112 |     let name = "git config user.name".shellOutput(cwd: url)
113 |     let email = "git config user.email".shellOutput(cwd: url)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:118:13: warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
116 | }
117 |
118 | private let getMovedFiles: (URL) -> [(from: URL, to: URL)] = memoize({ $0.relativePath }) { root in
    |             |- warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getMovedFiles' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
119 |     let command = "git diff --diff-filter=R --staged --name-status"
120 |     let output = command.shellOutput(cwd: root)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:167:13: warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
165 | }
166 |
167 | private let getCommitInfo: ((String?, URL)) -> GitFileInfo? = memoize(
    |             |- warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getCommitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
168 |     { hash, root in (hash ?? "none") + root.relativePath },
169 |     { hash, root in
/host/spi-builder-workspace/Sources/Inference.swift:1520:16: warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
  46 | }
  47 |
  48 | private struct OptionInferrer {
     |                `- note: consider making struct 'OptionInferrer' conform to the 'Sendable' protocol
  49 |     let fn: (Formatter, inout FormatOptions) -> Void
  50 |
     :
1518 |     }()
1519 |
1520 |     static let byName: [String: OptionInferrer] = {
     |                |- warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: add '@MainActor' to make static property 'byName' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1521 |         var inferrers = [String: OptionInferrer]()
1522 |         for (label, value) in Mirror(reflecting: Inference()).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:383:5: warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
 381 | }
 382 |
 383 | let Descriptors = _Descriptors()
     |     |- warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
     |     |- note: add '@MainActor' to make let 'Descriptors' part of global actor 'MainActor'
     |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     :
 441 | }
 442 |
 443 | struct _Descriptors {
     |        `- note: consider making struct '_Descriptors' conform to the 'Sendable' protocol
 444 |     let lineAfterMarks = OptionDescriptor(
 445 |         argumentName: "lineaftermarks",
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:385:13: warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 383 | let Descriptors = _Descriptors()
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     |             |- warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_allDescriptors' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_allDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 386 |     var descriptors = [OptionDescriptor]()
 387 |     for (label, value) in Mirror(reflecting: Descriptors).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:406:13: warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 404 | }()
 405 |
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
     |             |- warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_descriptorsByName' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_descriptorsByName' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:408:13: warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
  32 | import Foundation
  33 |
  34 | class OptionDescriptor {
     |       `- note: class 'OptionDescriptor' does not conform to the 'Sendable' protocol
  35 |     enum ArgumentType: EnumAssociable {
  36 |         /// index 0 is official value, others are acceptable
     :
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
     |             |- warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: add '@MainActor' to make let '_formattingDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 409 |     let internalDescriptors = Descriptors.internal.map(\.argumentName)
 410 |     return _allDescriptors.filter { !internalDescriptors.contains($0.argumentName) }
/host/spi-builder-workspace/Sources/Options.swift:180:23: warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
 175 |
 176 | /// Version number wrapper
 177 | public struct Version: RawRepresentable, Comparable, ExpressibleByStringLiteral, CustomStringConvertible {
     |               `- note: consider making struct 'Version' conform to the 'Sendable' protocol
 178 |     public let rawValue: String
 179 |
 180 |     public static let undefined = Version(rawValue: "0")!
     |                       |- warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'undefined' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 181 |
 182 |     public init(stringLiteral value: String) {
/host/spi-builder-workspace/Sources/Options.swift:332:16: warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 330 | /// File info, used for constructing header comments
 331 | public struct FileInfo: Equatable, CustomStringConvertible {
 332 |     static var defaultReplacements: [ReplacementKey: ReplacementType] = [
     |                |- warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'defaultReplacements' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'defaultReplacements' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 333 |         .createdDate: .dynamic { info, options in
 334 |             info.creationDate?.format(with: options.dateFormat,
/host/spi-builder-workspace/Sources/Options.swift:709:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 584 | /// Configuration options for formatting. These aren't actually used by the
 585 | /// Formatter class itself, but it makes them available to the format rules.
 586 | public struct FormatOptions: CustomStringConvertible {
     |               `- note: consider making struct 'FormatOptions' conform to the 'Sendable' protocol
 587 |     public var lineAfterMarks: Bool
 588 |     public var indent: String
     :
 707 |     var enabledRules: Set<String> = []
 708 |
 709 |     public static let `default` = FormatOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 710 |
 711 |     public init(lineAfterMarks: Bool = true,
/host/spi-builder-workspace/Sources/Options.swift:985:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 976 |
 977 | /// File enumeration options
 978 | public struct FileOptions {
     |               `- note: consider making struct 'FileOptions' conform to the 'Sendable' protocol
 979 |     public var followSymlinks: Bool
 980 |     public var supportedFileExtensions: [String]
     :
 983 |     public var minVersion: Version
 984 |
 985 |     public static let `default` = FileOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 986 |
 987 |     public init(followSymlinks: Bool = false,
/host/spi-builder-workspace/Sources/Options.swift:1025:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
1016 |
1017 | /// All options
1018 | public struct Options {
     |               `- note: consider making struct 'Options' conform to the 'Sendable' protocol
1019 |     public var fileOptions: FileOptions?
1020 |     public var formatOptions: FormatOptions?
     :
1023 |     public var lint: Bool
1024 |
1025 |     public static let `default` = Options(
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1026 |         fileOptions: .default,
1027 |         formatOptions: .default,
/host/spi-builder-workspace/Sources/RuleRegistry.generated.swift:11:5: warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | /// All of the rules defined in the Rules directory.
 10 | /// **Generated automatically when running tests. Do not modify.**
 11 | let ruleRegistry: [String: FormatRule] = [
    |     |- warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: add '@MainActor' to make let 'ruleRegistry' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 |     "acronyms": .acronyms,
 13 |     "andOperator": .andOperator,
/host/spi-builder-workspace/Sources/FormatRule.swift:34:20: note: class 'FormatRule' does not conform to the 'Sendable' protocol
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
/host/spi-builder-workspace/Sources/CommandLine.swift:49:16: warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  47 |
  48 |     /// Output handler - override this to intercept output from the CLI
  49 |     static var print: (String, OutputType) -> Void = { _, _ in
     |                |- warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'print' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'print' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  50 |         fatalError("No print hook set.")
  51 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:55:16: warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  53 |     /// Input handler - override this to inject input into the CLI
  54 |     /// Injected lines should include the terminating newline character
  55 |     static var readLine: () -> String? = {
     |                |- warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'readLine' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'readLine' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  56 |         Swift.readLine(strippingNewline: false)
  57 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:70:13: warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  68 | }
  69 |
  70 | private var quietMode = false
     |             |- warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert 'quietMode' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var 'quietMode' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  71 | private func print(_ message: String, as type: CLI.OutputType = .info) {
  72 |     if !quietMode || [.raw, .content, .error].contains(type) {
/host/spi-builder-workspace/Sources/CommandLine.swift:777:17: warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 775 |             // If no input file, try stdin
 776 |             DispatchQueue.global(qos: .userInitiated).async {
 777 |                 processFromStdin()
     |                 |- warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
     |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 778 |             }
 779 |             // Wait for input
/host/spi-builder-workspace/Sources/CommandLine.swift:682:14: warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 680 |         var input: String?
 681 |         var status = Status.idle
 682 |         func processFromStdin() {
     |              `- warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 683 |             status = .started
 684 |             while let line = CLI.readLine() {
/host/spi-builder-workspace/Sources/FormatRule.swift:50:16: warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
 48 |
 49 |     /// Null rule, used for testing
 50 |     static let none: FormatRule = .init(help: "") { _ in } examples: { nil }
    |                |- warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'none' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 51 |
 52 |     var isDeprecated: Bool {
/host/spi-builder-workspace/Sources/FormatRule.swift:100:12: warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | public let FormatRules = _FormatRules()
    |            |- warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: add '@MainActor' to make let 'FormatRules' part of global actor 'MainActor'
    |            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | private let rulesByName: [String: FormatRule] = {
    :
187 | }
188 |
189 | public struct _FormatRules {
    |               `- note: consider making struct '_FormatRules' conform to the 'Sendable' protocol
190 |     fileprivate init() {}
191 | }
/host/spi-builder-workspace/Sources/FormatRule.swift:102:13: warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
100 | public let FormatRules = _FormatRules()
101 |
102 | private let rulesByName: [String: FormatRule] = {
    |             |- warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'rulesByName' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
103 |     var rules = [String: FormatRule]()
104 |     for (name, rule) in ruleRegistry {
/host/spi-builder-workspace/Sources/FormatRule.swift:134:13: warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
132 | }
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
    |             |- warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_allRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:135:13: warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
    |             |- warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_deprecatedRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:136:13: warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
    |             |- warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_disabledByDefault' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
137 | private let _defaultRules = allRules(except: _disabledByDefault)
138 |
/host/spi-builder-workspace/Sources/FormatRule.swift:137:13: warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
    |             |- warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_defaultRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | public extension _FormatRules {
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2789:16: warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2787 |
2788 | extension Date {
2789 |     static var yearFormatter: (Date) -> String = {
     |                |- warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'yearFormatter' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'yearFormatter' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2790 |         let formatter = DateFormatter()
2791 |         formatter.dateFormat = "yyyy"
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2795:16: warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2793 |     }()
2794 |
2795 |     static var currentYear = yearFormatter(Date())
     |                |- warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'currentYear' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'currentYear' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2796 |
2797 |     var yearString: String {
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:100:13: warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | private let getGitRoot: (URL) -> URL? = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getGitRoot' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |     let dir = "git rev-parse --show-toplevel".shellOutput(cwd: url)
102 |
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:111:13: warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
109 |
110 | // If a file has never been committed, default to the local git user for the repository
111 | private let getDefaultGitInfo: (URL) -> GitFileInfo = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getDefaultGitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
112 |     let name = "git config user.name".shellOutput(cwd: url)
113 |     let email = "git config user.email".shellOutput(cwd: url)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:118:13: warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
116 | }
117 |
118 | private let getMovedFiles: (URL) -> [(from: URL, to: URL)] = memoize({ $0.relativePath }) { root in
    |             |- warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getMovedFiles' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
119 |     let command = "git diff --diff-filter=R --staged --name-status"
120 |     let output = command.shellOutput(cwd: root)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:167:13: warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
165 | }
166 |
167 | private let getCommitInfo: ((String?, URL)) -> GitFileInfo? = memoize(
    |             |- warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getCommitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
168 |     { hash, root in (hash ?? "none") + root.relativePath },
169 |     { hash, root in
/host/spi-builder-workspace/Sources/Inference.swift:1520:16: warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
  46 | }
  47 |
  48 | private struct OptionInferrer {
     |                `- note: consider making struct 'OptionInferrer' conform to the 'Sendable' protocol
  49 |     let fn: (Formatter, inout FormatOptions) -> Void
  50 |
     :
1518 |     }()
1519 |
1520 |     static let byName: [String: OptionInferrer] = {
     |                |- warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: add '@MainActor' to make static property 'byName' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1521 |         var inferrers = [String: OptionInferrer]()
1522 |         for (label, value) in Mirror(reflecting: Inference()).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:383:5: warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
 381 | }
 382 |
 383 | let Descriptors = _Descriptors()
     |     |- warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
     |     |- note: add '@MainActor' to make let 'Descriptors' part of global actor 'MainActor'
     |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     :
 441 | }
 442 |
 443 | struct _Descriptors {
     |        `- note: consider making struct '_Descriptors' conform to the 'Sendable' protocol
 444 |     let lineAfterMarks = OptionDescriptor(
 445 |         argumentName: "lineaftermarks",
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:385:13: warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 383 | let Descriptors = _Descriptors()
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     |             |- warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_allDescriptors' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_allDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 386 |     var descriptors = [OptionDescriptor]()
 387 |     for (label, value) in Mirror(reflecting: Descriptors).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:406:13: warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 404 | }()
 405 |
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
     |             |- warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_descriptorsByName' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_descriptorsByName' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:408:13: warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
  32 | import Foundation
  33 |
  34 | class OptionDescriptor {
     |       `- note: class 'OptionDescriptor' does not conform to the 'Sendable' protocol
  35 |     enum ArgumentType: EnumAssociable {
  36 |         /// index 0 is official value, others are acceptable
     :
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
     |             |- warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: add '@MainActor' to make let '_formattingDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 409 |     let internalDescriptors = Descriptors.internal.map(\.argumentName)
 410 |     return _allDescriptors.filter { !internalDescriptors.contains($0.argumentName) }
/host/spi-builder-workspace/Sources/Options.swift:180:23: warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
 175 |
 176 | /// Version number wrapper
 177 | public struct Version: RawRepresentable, Comparable, ExpressibleByStringLiteral, CustomStringConvertible {
     |               `- note: consider making struct 'Version' conform to the 'Sendable' protocol
 178 |     public let rawValue: String
 179 |
 180 |     public static let undefined = Version(rawValue: "0")!
     |                       |- warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'undefined' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 181 |
 182 |     public init(stringLiteral value: String) {
/host/spi-builder-workspace/Sources/Options.swift:332:16: warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 330 | /// File info, used for constructing header comments
 331 | public struct FileInfo: Equatable, CustomStringConvertible {
 332 |     static var defaultReplacements: [ReplacementKey: ReplacementType] = [
     |                |- warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'defaultReplacements' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'defaultReplacements' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 333 |         .createdDate: .dynamic { info, options in
 334 |             info.creationDate?.format(with: options.dateFormat,
/host/spi-builder-workspace/Sources/Options.swift:709:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 584 | /// Configuration options for formatting. These aren't actually used by the
 585 | /// Formatter class itself, but it makes them available to the format rules.
 586 | public struct FormatOptions: CustomStringConvertible {
     |               `- note: consider making struct 'FormatOptions' conform to the 'Sendable' protocol
 587 |     public var lineAfterMarks: Bool
 588 |     public var indent: String
     :
 707 |     var enabledRules: Set<String> = []
 708 |
 709 |     public static let `default` = FormatOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 710 |
 711 |     public init(lineAfterMarks: Bool = true,
/host/spi-builder-workspace/Sources/Options.swift:985:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 976 |
 977 | /// File enumeration options
 978 | public struct FileOptions {
     |               `- note: consider making struct 'FileOptions' conform to the 'Sendable' protocol
 979 |     public var followSymlinks: Bool
 980 |     public var supportedFileExtensions: [String]
     :
 983 |     public var minVersion: Version
 984 |
 985 |     public static let `default` = FileOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 986 |
 987 |     public init(followSymlinks: Bool = false,
/host/spi-builder-workspace/Sources/Options.swift:1025:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
1016 |
1017 | /// All options
1018 | public struct Options {
     |               `- note: consider making struct 'Options' conform to the 'Sendable' protocol
1019 |     public var fileOptions: FileOptions?
1020 |     public var formatOptions: FormatOptions?
     :
1023 |     public var lint: Bool
1024 |
1025 |     public static let `default` = Options(
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1026 |         fileOptions: .default,
1027 |         formatOptions: .default,
/host/spi-builder-workspace/Sources/RuleRegistry.generated.swift:11:5: warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | /// All of the rules defined in the Rules directory.
 10 | /// **Generated automatically when running tests. Do not modify.**
 11 | let ruleRegistry: [String: FormatRule] = [
    |     |- warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: add '@MainActor' to make let 'ruleRegistry' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 |     "acronyms": .acronyms,
 13 |     "andOperator": .andOperator,
/host/spi-builder-workspace/Sources/FormatRule.swift:34:20: note: class 'FormatRule' does not conform to the 'Sendable' protocol
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
/host/spi-builder-workspace/Sources/CommandLine.swift:49:16: warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  47 |
  48 |     /// Output handler - override this to intercept output from the CLI
  49 |     static var print: (String, OutputType) -> Void = { _, _ in
     |                |- warning: static property 'print' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'print' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'print' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  50 |         fatalError("No print hook set.")
  51 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:55:16: warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  53 |     /// Input handler - override this to inject input into the CLI
  54 |     /// Injected lines should include the terminating newline character
  55 |     static var readLine: () -> String? = {
     |                |- warning: static property 'readLine' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'readLine' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'readLine' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  56 |         Swift.readLine(strippingNewline: false)
  57 |     }
/host/spi-builder-workspace/Sources/CommandLine.swift:70:13: warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  68 | }
  69 |
  70 | private var quietMode = false
     |             |- warning: var 'quietMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert 'quietMode' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var 'quietMode' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  71 | private func print(_ message: String, as type: CLI.OutputType = .info) {
  72 |     if !quietMode || [.raw, .content, .error].contains(type) {
/host/spi-builder-workspace/Sources/CommandLine.swift:777:17: warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 775 |             // If no input file, try stdin
 776 |             DispatchQueue.global(qos: .userInitiated).async {
 777 |                 processFromStdin()
     |                 |- warning: capture of 'processFromStdin()' with non-sendable type '() -> ()' in a '@Sendable' closure; this is an error in the Swift 6 language mode
     |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
 778 |             }
 779 |             // Wait for input
/host/spi-builder-workspace/Sources/CommandLine.swift:682:14: warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 680 |         var input: String?
 681 |         var status = Status.idle
 682 |         func processFromStdin() {
     |              `- warning: concurrently-executed local function 'processFromStdin()' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
 683 |             status = .started
 684 |             while let line = CLI.readLine() {
/host/spi-builder-workspace/Sources/FormatRule.swift:50:16: warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
 48 |
 49 |     /// Null rule, used for testing
 50 |     static let none: FormatRule = .init(help: "") { _ in } examples: { nil }
    |                |- warning: static property 'none' is not concurrency-safe because non-'Sendable' type 'FormatRule' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'none' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 51 |
 52 |     var isDeprecated: Bool {
/host/spi-builder-workspace/Sources/FormatRule.swift:100:12: warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | public let FormatRules = _FormatRules()
    |            |- warning: let 'FormatRules' is not concurrency-safe because non-'Sendable' type '_FormatRules' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: add '@MainActor' to make let 'FormatRules' part of global actor 'MainActor'
    |            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | private let rulesByName: [String: FormatRule] = {
    :
187 | }
188 |
189 | public struct _FormatRules {
    |               `- note: consider making struct '_FormatRules' conform to the 'Sendable' protocol
190 |     fileprivate init() {}
191 | }
/host/spi-builder-workspace/Sources/FormatRule.swift:102:13: warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
100 | public let FormatRules = _FormatRules()
101 |
102 | private let rulesByName: [String: FormatRule] = {
    |             |- warning: let 'rulesByName' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'rulesByName' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
103 |     var rules = [String: FormatRule]()
104 |     for (name, rule) in ruleRegistry {
/host/spi-builder-workspace/Sources/FormatRule.swift:134:13: warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
132 | }
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
    |             |- warning: let '_allRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_allRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:135:13: warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
133 |
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
    |             |- warning: let '_deprecatedRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_deprecatedRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
/host/spi-builder-workspace/Sources/FormatRule.swift:136:13: warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
134 | private let _allRules = rulesByName.sorted(by: { $0.key < $1.key }).map(\.value)
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
    |             |- warning: let '_disabledByDefault' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_disabledByDefault' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
137 | private let _defaultRules = allRules(except: _disabledByDefault)
138 |
/host/spi-builder-workspace/Sources/FormatRule.swift:137:13: warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
    :
135 | private let _deprecatedRules = _allRules.filter(\.isDeprecated)
136 | private let _disabledByDefault = _allRules.filter(\.disabledByDefault)
137 | private let _defaultRules = allRules(except: _disabledByDefault)
    |             |- warning: let '_defaultRules' is not concurrency-safe because non-'Sendable' type '[FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let '_defaultRules' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
138 |
139 | public extension _FormatRules {
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2789:16: warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2787 |
2788 | extension Date {
2789 |     static var yearFormatter: (Date) -> String = {
     |                |- warning: static property 'yearFormatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'yearFormatter' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'yearFormatter' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2790 |         let formatter = DateFormatter()
2791 |         formatter.dateFormat = "yyyy"
/host/spi-builder-workspace/Sources/FormattingHelpers.swift:2795:16: warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2793 |     }()
2794 |
2795 |     static var currentYear = yearFormatter(Date())
     |                |- warning: static property 'currentYear' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'currentYear' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'currentYear' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2796 |
2797 |     var yearString: String {
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:100:13: warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
 98 | }
 99 |
100 | private let getGitRoot: (URL) -> URL? = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getGitRoot' is not concurrency-safe because non-'Sendable' type '(URL) -> URL?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getGitRoot' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |     let dir = "git rev-parse --show-toplevel".shellOutput(cwd: url)
102 |
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:111:13: warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
109 |
110 | // If a file has never been committed, default to the local git user for the repository
111 | private let getDefaultGitInfo: (URL) -> GitFileInfo = memoize({ $0.relativePath }) { url in
    |             |- warning: let 'getDefaultGitInfo' is not concurrency-safe because non-'Sendable' type '(URL) -> GitFileInfo' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getDefaultGitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
112 |     let name = "git config user.name".shellOutput(cwd: url)
113 |     let email = "git config user.email".shellOutput(cwd: url)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:118:13: warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
116 | }
117 |
118 | private let getMovedFiles: (URL) -> [(from: URL, to: URL)] = memoize({ $0.relativePath }) { root in
    |             |- warning: let 'getMovedFiles' is not concurrency-safe because non-'Sendable' type '(URL) -> [(from: URL, to: URL)]' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getMovedFiles' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
119 |     let command = "git diff --diff-filter=R --staged --name-status"
120 |     let output = command.shellOutput(cwd: root)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/GitFileInfo.swift:167:13: warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
165 | }
166 |
167 | private let getCommitInfo: ((String?, URL)) -> GitFileInfo? = memoize(
    |             |- warning: let 'getCommitInfo' is not concurrency-safe because non-'Sendable' type '((String?, URL)) -> GitFileInfo?' may have shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: add '@MainActor' to make let 'getCommitInfo' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
168 |     { hash, root in (hash ?? "none") + root.relativePath },
169 |     { hash, root in
/host/spi-builder-workspace/Sources/Inference.swift:1520:16: warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
  46 | }
  47 |
  48 | private struct OptionInferrer {
     |                `- note: consider making struct 'OptionInferrer' conform to the 'Sendable' protocol
  49 |     let fn: (Formatter, inout FormatOptions) -> Void
  50 |
     :
1518 |     }()
1519 |
1520 |     static let byName: [String: OptionInferrer] = {
     |                |- warning: static property 'byName' is not concurrency-safe because non-'Sendable' type '[String : OptionInferrer]' may have shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: add '@MainActor' to make static property 'byName' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1521 |         var inferrers = [String: OptionInferrer]()
1522 |         for (label, value) in Mirror(reflecting: Inference()).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:383:5: warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
 381 | }
 382 |
 383 | let Descriptors = _Descriptors()
     |     |- warning: let 'Descriptors' is not concurrency-safe because non-'Sendable' type '_Descriptors' may have shared mutable state; this is an error in the Swift 6 language mode
     |     |- note: add '@MainActor' to make let 'Descriptors' part of global actor 'MainActor'
     |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     :
 441 | }
 442 |
 443 | struct _Descriptors {
     |        `- note: consider making struct '_Descriptors' conform to the 'Sendable' protocol
 444 |     let lineAfterMarks = OptionDescriptor(
 445 |         argumentName: "lineaftermarks",
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:385:13: warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 383 | let Descriptors = _Descriptors()
 384 |
 385 | private var _allDescriptors: [OptionDescriptor] = {
     |             |- warning: var '_allDescriptors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_allDescriptors' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_allDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 386 |     var descriptors = [OptionDescriptor]()
 387 |     for (label, value) in Mirror(reflecting: Descriptors).children {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:406:13: warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 404 | }()
 405 |
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
     |             |- warning: var '_descriptorsByName' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: convert '_descriptorsByName' to a 'let' constant to make 'Sendable' shared state immutable
     |             |- note: add '@MainActor' to make var '_descriptorsByName' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
/host/spi-builder-workspace/Sources/OptionDescriptor.swift:408:13: warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
  32 | import Foundation
  33 |
  34 | class OptionDescriptor {
     |       `- note: class 'OptionDescriptor' does not conform to the 'Sendable' protocol
  35 |     enum ArgumentType: EnumAssociable {
  36 |         /// index 0 is official value, others are acceptable
     :
 406 | private var _descriptorsByName: [String: OptionDescriptor] = Dictionary(uniqueKeysWithValues: _allDescriptors.map { ($0.argumentName, $0) })
 407 |
 408 | private let _formattingDescriptors: [OptionDescriptor] = {
     |             |- warning: let '_formattingDescriptors' is not concurrency-safe because non-'Sendable' type '[OptionDescriptor]' may have shared mutable state; this is an error in the Swift 6 language mode
     |             |- note: add '@MainActor' to make let '_formattingDescriptors' part of global actor 'MainActor'
     |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 409 |     let internalDescriptors = Descriptors.internal.map(\.argumentName)
 410 |     return _allDescriptors.filter { !internalDescriptors.contains($0.argumentName) }
/host/spi-builder-workspace/Sources/Options.swift:180:23: warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
 175 |
 176 | /// Version number wrapper
 177 | public struct Version: RawRepresentable, Comparable, ExpressibleByStringLiteral, CustomStringConvertible {
     |               `- note: consider making struct 'Version' conform to the 'Sendable' protocol
 178 |     public let rawValue: String
 179 |
 180 |     public static let undefined = Version(rawValue: "0")!
     |                       |- warning: static property 'undefined' is not concurrency-safe because non-'Sendable' type 'Version' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'undefined' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 181 |
 182 |     public init(stringLiteral value: String) {
/host/spi-builder-workspace/Sources/Options.swift:332:16: warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 330 | /// File info, used for constructing header comments
 331 | public struct FileInfo: Equatable, CustomStringConvertible {
 332 |     static var defaultReplacements: [ReplacementKey: ReplacementType] = [
     |                |- warning: static property 'defaultReplacements' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                |- note: convert 'defaultReplacements' to a 'let' constant to make 'Sendable' shared state immutable
     |                |- note: add '@MainActor' to make static property 'defaultReplacements' part of global actor 'MainActor'
     |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 333 |         .createdDate: .dynamic { info, options in
 334 |             info.creationDate?.format(with: options.dateFormat,
/host/spi-builder-workspace/Sources/Options.swift:709:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 584 | /// Configuration options for formatting. These aren't actually used by the
 585 | /// Formatter class itself, but it makes them available to the format rules.
 586 | public struct FormatOptions: CustomStringConvertible {
     |               `- note: consider making struct 'FormatOptions' conform to the 'Sendable' protocol
 587 |     public var lineAfterMarks: Bool
 588 |     public var indent: String
     :
 707 |     var enabledRules: Set<String> = []
 708 |
 709 |     public static let `default` = FormatOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FormatOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 710 |
 711 |     public init(lineAfterMarks: Bool = true,
/host/spi-builder-workspace/Sources/Options.swift:985:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 976 |
 977 | /// File enumeration options
 978 | public struct FileOptions {
     |               `- note: consider making struct 'FileOptions' conform to the 'Sendable' protocol
 979 |     public var followSymlinks: Bool
 980 |     public var supportedFileExtensions: [String]
     :
 983 |     public var minVersion: Version
 984 |
 985 |     public static let `default` = FileOptions()
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'FileOptions' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 986 |
 987 |     public init(followSymlinks: Bool = false,
/host/spi-builder-workspace/Sources/Options.swift:1025:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
1016 |
1017 | /// All options
1018 | public struct Options {
     |               `- note: consider making struct 'Options' conform to the 'Sendable' protocol
1019 |     public var fileOptions: FileOptions?
1020 |     public var formatOptions: FormatOptions?
     :
1023 |     public var lint: Bool
1024 |
1025 |     public static let `default` = Options(
     |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Options' may have shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
     |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
1026 |         fileOptions: .default,
1027 |         formatOptions: .default,
/host/spi-builder-workspace/Sources/RuleRegistry.generated.swift:11:5: warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | /// All of the rules defined in the Rules directory.
 10 | /// **Generated automatically when running tests. Do not modify.**
 11 | let ruleRegistry: [String: FormatRule] = [
    |     |- warning: let 'ruleRegistry' is not concurrency-safe because non-'Sendable' type '[String : FormatRule]' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: add '@MainActor' to make let 'ruleRegistry' part of global actor 'MainActor'
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 |     "acronyms": .acronyms,
 13 |     "andOperator": .andOperator,
/host/spi-builder-workspace/Sources/FormatRule.swift:34:20: note: class 'FormatRule' does not conform to the 'Sendable' protocol
 32 | import Foundation
 33 |
 34 | public final class FormatRule: Hashable, Comparable, CustomStringConvertible {
    |                    `- note: class 'FormatRule' does not conform to the 'Sendable' protocol
 35 |     static let unnamedRule = "[unnamed rule]"
 36 |
[275/279] Wrapping AST for SwiftFormat for debugging
[277/281] Emitting module CommandLineTool
/host/spi-builder-workspace/CommandLineTool/main.swift:69:5: warning: reference to static property 'print' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
67 | private let printQueue = DispatchQueue(label: "swiftformat.print")
68 |
69 | CLI.print = { message, type in
   |     `- warning: reference to static property 'print' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
70 |     printQueue.sync {
71 |         switch type {
/host/spi-builder-workspace/Sources/CommandLine.swift:49:16: note: static property declared here
  47 |
  48 |     /// Output handler - override this to intercept output from the CLI
  49 |     static var print: (String, OutputType) -> Void = { _, _ in
     |                `- note: static property declared here
  50 |         fatalError("No print hook set.")
  51 |     }
[278/281] Compiling CommandLineTool main.swift
/host/spi-builder-workspace/CommandLineTool/main.swift:69:5: warning: reference to static property 'print' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
67 | private let printQueue = DispatchQueue(label: "swiftformat.print")
68 |
69 | CLI.print = { message, type in
   |     `- warning: reference to static property 'print' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
70 |     printQueue.sync {
71 |         switch type {
/host/spi-builder-workspace/Sources/CommandLine.swift:49:16: note: static property declared here
  47 |
  48 |     /// Output handler - override this to intercept output from the CLI
  49 |     static var print: (String, OutputType) -> Void = { _, _ in
     |                `- note: static property declared here
  50 |         fatalError("No print hook set.")
  51 |     }
[279/282] Wrapping AST for CommandLineTool for debugging
[280/282] Write Objects.LinkFileList
[281/282] Linking swiftformat
Build complete! (54.41s)
Build complete.
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        "Rules/RedundantPropertyTests.swift",
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basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.