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Build Information

Successful build of swift-observation, reference main (d8843f), with Swift 6.4 for macOS (SPM) on 30 Sep 2026 15:12:38 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 5.1.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/moreSwift/swift-observation-polyfill.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/moreSwift/swift-observation-polyfill
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at d8843fa Fix make_polyfill.py bug that swapped nonisolated and regular conformances (#4)
Submodule path 'swift-perception': checked out '3bd12e883efd5162cf252eb225b46b77d04126c6'
Submodule 'swift-perception' (https://github.com/pointfreeco/swift-perception) registered for path 'swift-perception'
Cloning into '/Users/admin/builder/spi-builder-workspace/swift-perception'...
Cloned https://github.com/moreSwift/swift-observation-polyfill.git
Revision (git rev-parse @):
d8843fa6dbf970aab42faaf101c9ce1cfd16fb94
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/moreSwift/swift-observation-polyfill.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/moreSwift/swift-observation-polyfill.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Computing dependencies]
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Build complete! (22.34 sec)
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/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillCore/ObservationPolyfills.swift:15:2: warning: symbol name 'swift_task_addCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 13 |
 14 | @usableFromInline
 15 | @_silgen_name("swift_task_addCancellationHandler")
    |  `- warning: symbol name 'swift_task_addCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 16 | func _taskAddCancellationHandler(handler: () -> Void) -> UnsafeRawPointer /*CancellationNotificationStatusRecord*/
 17 |
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillCore/ObservationPolyfills.swift:19:2: warning: symbol name 'swift_task_removeCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 17 |
 18 | @usableFromInline
 19 | @_silgen_name("swift_task_removeCancellationHandler")
    |  `- warning: symbol name 'swift_task_removeCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 20 | func _taskRemoveCancellationHandler(
 21 |   record: UnsafeRawPointer /*CancellationNotificationStatusRecord*/
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillCore/ObservationPolyfills.swift:15:2: warning: symbol name 'swift_task_addCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 13 |
 14 | @usableFromInline
 15 | @_silgen_name("swift_task_addCancellationHandler")
    |  `- warning: symbol name 'swift_task_addCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 16 | func _taskAddCancellationHandler(handler: () -> Void) -> UnsafeRawPointer /*CancellationNotificationStatusRecord*/
 17 |
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillCore/ObservationPolyfills.swift:19:2: warning: symbol name 'swift_task_removeCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 17 |
 18 | @usableFromInline
 19 | @_silgen_name("swift_task_removeCancellationHandler")
    |  `- warning: symbol name 'swift_task_removeCancellationHandler' is reserved for the Swift runtime and cannot be directly referenced without causing unpredictable behavior; this will become an error
 20 | func _taskRemoveCancellationHandler(
 21 |   record: UnsafeRawPointer /*CancellationNotificationStatusRecord*/
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillCore/ObservationPolyfills.swift:120:20: warning: 'withUnsafeContinuation(isolation:_:)' is deprecated: Replaced by nonisolated(nonsending) overload [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
118 |     // this must take a locally unique id (to the active calls of next)
119 |     static func willChange(isolation iterationIsolation: isolated (any Actor)? = #isolation, state: _ManagedCriticalState<State>, id: Int) async {
120 |       return await withUnsafeContinuation(isolation: iterationIsolation) { continuation in
    |                    `- warning: 'withUnsafeContinuation(isolation:_:)' is deprecated: Replaced by nonisolated(nonsending) overload [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
121 |         state.withCriticalRegion { state in
122 |           defer { state.dirty = false }
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillCore/ObservationPolyfills.swift:212:28: warning: converting @isolated(any) function of type '@isolated(any) @Sendable () throws(Failure) -> Element' to synchronous function type '() throws(Failure) -> Element' is not allowed; this will be an error in a future Swift language mode [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/conversion-from-isolated-any-to-synchronous\ConversionFromIsolatedAnyToSynchronous]8;;\]
210 |         case .element(let element):
211 |           // NB: This warning exists in the Swift standard library and appears to be unavoidable
212 |           Result(catching: element).map { Iteration.next($0) }
    |                            `- warning: converting @isolated(any) function of type '@isolated(any) @Sendable () throws(Failure) -> Element' to synchronous function type '() throws(Failure) -> Element' is not allowed; this will be an error in a future Swift language mode [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/conversion-from-isolated-any-to-synchronous\ConversionFromIsolatedAnyToSynchronous]8;;\]
213 |         case .iteration(let iteration):
214 |           // NB: This warning exists in the Swift standard library and appears to be unavoidable
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillCore/ObservationPolyfills.swift:215:28: warning: converting @isolated(any) function of type '@isolated(any) @Sendable () throws(Failure) -> ObservationPolyfills<Element, Failure>.Iteration' to synchronous function type '() throws(Failure) -> ObservationPolyfills<Element, Failure>.Iteration' is not allowed; this will be an error in a future Swift language mode [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/conversion-from-isolated-any-to-synchronous\ConversionFromIsolatedAnyToSynchronous]8;;\]
213 |         case .iteration(let iteration):
214 |           // NB: This warning exists in the Swift standard library and appears to be unavoidable
215 |           Result(catching: iteration)
    |                            `- warning: converting @isolated(any) function of type '@isolated(any) @Sendable () throws(Failure) -> ObservationPolyfills<Element, Failure>.Iteration' to synchronous function type '() throws(Failure) -> ObservationPolyfills<Element, Failure>.Iteration' is not allowed; this will be an error in a future Swift language mode [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/conversion-from-isolated-any-to-synchronous\ConversionFromIsolatedAnyToSynchronous]8;;\]
216 |         }
217 |       } onChange: { [state] in
[#ConversionFromIsolatedAnyToSynchronous]: <https://docs.swift.org/compiler/documentation/diagnostics/conversion-from-isolated-any-to-synchronous>
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillMacros/ObservableMacro.swift:220:12: warning: 'init(leadingTrivia:_:attributes:_:modifier:_:accessorSpecifier:_:parameters:_:effectSpecifiers:_:body:_:trailingTrivia:)' is deprecated: use `modifiers:` instead of `modifier:` [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
218 | extension AccessorDeclSyntax {
219 |   func locationAnnotated(in context: LocalMacroExpansionContext<some MacroExpansionContext>) -> AccessorDeclSyntax {
220 |     return AccessorDeclSyntax(
    |            `- warning: 'init(leadingTrivia:_:attributes:_:modifier:_:accessorSpecifier:_:parameters:_:effectSpecifiers:_:body:_:trailingTrivia:)' is deprecated: use `modifiers:` instead of `modifier:` [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
221 |       leadingTrivia: leadingTrivia,
222 |       attributes: attributes,
/Users/admin/builder/spi-builder-workspace/Sources/ObservationPolyfillMacros/ObservableMacro.swift:223:17: warning: 'modifier' is deprecated: use `modifiers` to see all modifiers on an accessor declaration; `modifier` only returns the first one [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
221 |       leadingTrivia: leadingTrivia,
222 |       attributes: attributes,
223 |       modifier: modifier,
    |                 `- warning: 'modifier' is deprecated: use `modifiers` to see all modifiers on an accessor declaration; `modifier` only returns the first one [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
224 |       accessorSpecifier: accessorSpecifier,
225 |       parameters: parameters,
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Build complete.
{
  "dependencies" : [
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  "platforms" : [
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    {
      "name" : "ObservationPolyfillMacros",
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      "type" : {
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  ],
  "swift_languages_versions" : [
    "5"
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  "targets" : [
    {
      "c99name" : "ObservationPolyfillTests",
      "module_type" : "SwiftTarget",
      "name" : "ObservationPolyfillTests",
      "path" : "Tests/ObservationPolyfillTests",
      "sources" : [
        "ModifyAccessorTests.swift",
        "ObservationPolyfillCheckingTests.swift",
        "ObservationTrackingTests.swift"
      ],
      "target_dependencies" : [
        "ObservationPolyfill"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ObservationPolyfillMacrosTests",
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        "SwiftSyntaxMacros",
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      "product_memberships" : [
        "ObservationPolyfill",
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      "sources" : [
        "Availability.swift",
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        "Internal/ObservationBeta.swift",
        "Locking.swift",
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        "ObservationPolyfill/ObservationPolyfillChecking.swift",
        "ObservationPolyfill/ObservationPolyfillRegistrar.swift",
        "ObservationPolyfills.swift",
        "ObservationTracking.swift",
        "SwiftUI/Bindable.swift",
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        "ObservationPolyfillMacros"
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      "type" : "library"
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  ],
  "tools_version" : "6.0"
}
Done.