Build Information
Failed to build Workflow, reference v3.17.0 (20d302), with Swift 6.4 for macOS (SPM) on 19 Sep 2026 02:15:35 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64Build Log
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RunAll
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Builder version: 5.1.0
Interrupt handler set up.
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Checkout
========================================
Clone URL: https://github.com/jordanekay/workflow-swift.git
Reference: v3.17.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jordanekay/workflow-swift
* tag v3.17.0 -> FETCH_HEAD
HEAD is now at 20d3025 Adds a convenience for mapping Never outputs to other types (#340)
Cloned https://github.com/jordanekay/workflow-swift.git
Revision (git rev-parse @):
20d3025f9e20d1a5c120656964101f8a4e4f96a6
SUCCESS checkout https://github.com/jordanekay/workflow-swift.git at v3.17.0
========================================
Build
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Selected platform: macosSpm
Swift version: 6.4
Building package at path: $PWD
https://github.com/jordanekay/workflow-swift.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Computing dependencies]
[Constructing description]
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[Planning deferred tasks]
[Constructing 3111 / 3871]
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Fetching https://github.com/pointfreeco/swift-custom-dump
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Computing version for https://github.com/ReactiveX/RxSwift.git
warning: 'rxswift': /Package@swift-5.9.swift:99:56: warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
97 | let package = Package(
98 | name: "RxSwift",
99 | platforms: [.iOS(.v12), .macOS(.v10_13), .watchOS(.v4), .tvOS(.v12), .visionOS(.v1)],
| `- warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
100 | products: ([
101 | [
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Computed https://github.com/ReactiveX/RxSwift.git at 6.10.2 (3.20s)
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Computed https://github.com/pointfreeco/swift-macro-testing at 0.7.0 (0.56s)
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Computed https://github.com/pointfreeco/swift-case-paths at 1.10.0 (8.43s)
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Computed https://github.com/pointfreeco/swift-custom-dump at 1.7.3 (0.60s)
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Computed https://github.com/apple/swift-collections at 1.6.0 (0.70s)
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Computed https://github.com/pointfreeco/swift-snapshot-testing at 1.19.5 (0.61s)
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Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.13.1 (0.72s)
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Computed https://github.com/swiftlang/swift-syntax at 600.0.1 (0.86s)
Creating working copy for https://github.com/pointfreeco/swift-macro-testing
Working copy of https://github.com/pointfreeco/swift-macro-testing resolved at 0.7.0
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Working copy of https://github.com/apple/swift-collections resolved at 1.6.0
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Working copy of https://github.com/pointfreeco/swift-issue-reporting resolved at 2.1.0
Creating working copy for https://github.com/pointfreeco/swift-identified-collections
Working copy of https://github.com/pointfreeco/swift-identified-collections resolved at 1.1.1
Creating working copy for https://github.com/pointfreeco/swift-perception
Working copy of https://github.com/pointfreeco/swift-perception resolved at 1.6.0
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Working copy of https://github.com/pointfreeco/swift-case-paths resolved at 1.10.0
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Working copy of https://github.com/ReactiveCocoa/ReactiveSwift.git resolved at 7.2.1
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Working copy of https://github.com/ReactiveX/RxSwift.git resolved at 6.10.2
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Working copy of https://github.com/pointfreeco/swift-snapshot-testing resolved at 1.19.5
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Working copy of https://github.com/swiftlang/swift-syntax resolved at 600.0.1
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Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.13.1
warning: 'rxswift': /Users/admin/builder/spi-builder-workspace/.build/checkouts/RxSwift/Package@swift-5.9.swift:99:56: warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
97 | let package = Package(
98 | name: "RxSwift",
99 | platforms: [.iOS(.v12), .macOS(.v10_13), .watchOS(.v4), .tvOS(.v12), .visionOS(.v1)],
| `- warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
100 | products: ([
101 | [
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/Extensions.swift:47:21: [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m45 |[0;0m func accessorsMatching(_ predicate: (TokenKind) -> Bool) -> [AccessorDeclSyntax] {
[0;36m46 |[0;0m let patternBindings = bindings.compactMap { binding in
[0;36m47 |[0;0m binding.as(PatternBindingSyntax.self)
[0;36m|[0;0m `- [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m48 |[0;0m }
[0;36m49 |[0;0m let accessors: [AccessorDeclListSyntax.Element] = patternBindings.compactMap { patternBinding in
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/Extensions.swift:58:39: [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m56 |[0;0m }.flatMap { $0 }
[0;36m57 |[0;0m return accessors.compactMap { accessor in
[0;36m58 |[0;0m guard let decl = accessor.as(AccessorDeclSyntax.self) else {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m59 |[0;0m return nil
[0;36m60 |[0;0m }
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/Extensions.swift:236:38: [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m234 |[0;0m var standins = [FunctionDeclSyntax.SignatureStandin]()
[0;36m235 |[0;0m for member in memberBlock.members {
[0;36m236 |[0;0m if let function = member.as(MemberBlockItemSyntax.self)?.decl.as(FunctionDeclSyntax.self) {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m237 |[0;0m standins.append(function.signatureStandin)
[0;36m238 |[0;0m }
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/Extensions.swift:245:38: [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m243 |[0;0m func hasMemberFunction(equvalentTo other: FunctionDeclSyntax) -> Bool {
[0;36m244 |[0;0m for member in memberBlock.members {
[0;36m245 |[0;0m if let function = member.as(MemberBlockItemSyntax.self)?.decl.as(FunctionDeclSyntax.self) {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m246 |[0;0m if function.isEquivalent(to: other) {
[0;36m247 |[0;0m return true
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/Extensions.swift:256:38: [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m254 |[0;0m func hasMemberProperty(equivalentTo other: VariableDeclSyntax) -> Bool {
[0;36m255 |[0;0m for member in memberBlock.members {
[0;36m256 |[0;0m if let variable = member.as(MemberBlockItemSyntax.self)?.decl.as(VariableDeclSyntax.self) {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m257 |[0;0m if variable.isEquivalent(to: other) {
[0;36m258 |[0;0m return true
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/Extensions.swift:267:42: [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m265 |[0;0m var definedVariables: [VariableDeclSyntax] {
[0;36m266 |[0;0m memberBlock.members.compactMap { member in
[0;36m267 |[0;0m if let variableDecl = member.as(MemberBlockItemSyntax.self)?.decl.as(VariableDeclSyntax.self) {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'as' is deprecated: This cast will always succeed[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m268 |[0;0m return variableDecl
[0;36m269 |[0;0m }
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/ObservableStateMacro.swift:454:30: [1;33mwarning: [1;39m'MacroExpansionErrorMessage' is deprecated: MacroExpansionErrorMessage has been moved to the SwiftSyntaxMacros module[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m452 |[0;0m Diagnostic(
[0;36m453 |[0;0m node: attribute,
[0;36m454 |[0;0m message: MacroExpansionErrorMessage("'@\(name)' cannot be used in '@ObservableState'"),
[0;36m|[0;0m `- [1;33mwarning: [1;39m'MacroExpansionErrorMessage' is deprecated: MacroExpansionErrorMessage has been moved to the SwiftSyntaxMacros module[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m455 |[0;0m fixIt: .replace(
[0;36m456 |[0;0m message: MacroExpansionFixItMessage("Use '@\(rename)' instead"),
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUIMacros/Sources/Derived/ObservableStateMacro.swift:456:34: [1;33mwarning: [1;39m'MacroExpansionFixItMessage' is deprecated: MacroExpansionFixItMessage has been moved to the SwiftSyntaxMacros module[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m454 |[0;0m message: MacroExpansionErrorMessage("'@\(name)' cannot be used in '@ObservableState'"),
[0;36m455 |[0;0m fixIt: .replace(
[0;36m456 |[0;0m message: MacroExpansionFixItMessage("Use '@\(rename)' instead"),
[0;36m|[0;0m `- [1;33mwarning: [1;39m'MacroExpansionFixItMessage' is deprecated: MacroExpansionFixItMessage has been moved to the SwiftSyntaxMacros module[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m457 |[0;0m oldNode: attribute,
[0;36m458 |[0;0m newNode: attribute.with(
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Store.swift failed with a nonzero exit code. Command line: cd /Users/admin/builder
builtin-SwiftPerFileCompile Store.swift
/Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Store.swift:405:51: [1;31merror: [1;39mextraneous argument label '_offset:' in call[0;0m
[0;36m403 |[0;0m ) { index in
[0;36m404 |[0;0m self.scope(
[0;36m405 |[0;0m key: collection.appending(path: \.[_offset: index]),
[0;36m|[0;0m `- [1;31merror: [1;39mextraneous argument label '_offset:' in call[0;0m
[0;36m406 |[0;0m getModel: { model in
[0;36m407 |[0;0m model[keyPath: collection][index]
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/ActionModel.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Bindable+Store.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Derived/AreOrderedSetsDuplicates.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Derived/ObservableState.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Derived/ObservationStateRegistrar.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Exports.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Macros.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/ObservableModel.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/ObservableScreen+Preview.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/ObservableScreen.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/RenderContext+ObservableModel.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/StateAccessor.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Store+Preview.swift -primary-file /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Store.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/Workflow+Preview.swift /Users/admin/builder/spi-builder-workspace/WorkflowSwiftUI/Sources/WorkflowView.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Workflow.build/Debug/WorkflowSwiftUI-t.build/Objects-normal/arm64/Store.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Workflow.build/Debug/WorkflowSwiftUI-t.build/Objects-normal/arm64/Store.swiftconstvalues 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error: Build failed
BUILD FAILURE 6.4 macosSpm