Swift Package IndexBuild Information
Successful build of NotificationManager, reference main (383a4c), with Swift 6.1 for macOS (SPM) on 5 Oct 2026 06:04:12 UTC.
Swift 6 data race errors: 2
Build Command
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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 InferSendableFromCapturesBuild Log
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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/timokoethe/NotificationManager.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/timokoethe/NotificationManager
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 383a4c0 Serialize pending notification operations (#13)
Cloned https://github.com/timokoethe/NotificationManager.git
Revision (git rev-parse @):
383a4c0ccd9ccb5ba55c74b6180b64d7b5c42b99
SUCCESS checkout https://github.com/timokoethe/NotificationManager.git at main
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Build
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Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/timokoethe/NotificationManager.git
https://github.com/timokoethe/NotificationManager.git
{
"dependencies" : [
],
"manifest_display_name" : "NotificationManager",
"name" : "NotificationManager",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "10.15"
},
{
"name" : "ios",
"version" : "13.0"
},
{
"name" : "visionos",
"version" : "1.0"
}
],
"products" : [
{
"name" : "NotificationManager",
"targets" : [
"NotificationManager"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "NotificationManagerTests",
"module_type" : "SwiftTarget",
"name" : "NotificationManagerTests",
"path" : "Tests/NotificationManagerTests",
"sources" : [
"NotificationManagerTests.swift"
],
"target_dependencies" : [
"NotificationManager"
],
"type" : "test"
},
{
"c99name" : "NotificationManager",
"module_type" : "SwiftTarget",
"name" : "NotificationManager",
"path" : "Sources/NotificationManager",
"product_memberships" : [
"NotificationManager"
],
"sources" : [
"NotificationManager.swift"
],
"type" : "library"
}
],
"tools_version" : "5.9"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/4] Compiling NotificationManager NotificationManager.swift
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:54:24: warning: static property 'pendingOperations' is not concurrency-safe because non-'Sendable' type 'PendingNotificationOperations' may have shared mutable state; this is an error in the Swift 6 language mode
52 | public struct NotificationManager {
53 | private static let defaultAuthorizationOptions: UNAuthorizationOptions = [.alert, .sound, .badge]
54 | private static let pendingOperations = PendingNotificationOperations()
| |- warning: static property 'pendingOperations' is not concurrency-safe because non-'Sendable' type 'PendingNotificationOperations' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'pendingOperations' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
55 | private static var centerOverride: (any UserNotificationCenter)?
56 | static var center: any UserNotificationCenter {
:
452 | /// Registers operations synchronously, then waits for each predecessor to finish.
453 | /// A serial task chain also preserves ordering across suspension points.
454 | private final class PendingNotificationOperations {
| `- note: class 'PendingNotificationOperations' does not conform to the 'Sendable' protocol
455 | private let lock = NSLock()
456 | private var tail: Task<Void, Never>?
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:55:24: warning: static property 'centerOverride' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
53 | private static let defaultAuthorizationOptions: UNAuthorizationOptions = [.alert, .sound, .badge]
54 | private static let pendingOperations = PendingNotificationOperations()
55 | private static var centerOverride: (any UserNotificationCenter)?
| |- warning: static property 'centerOverride' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'centerOverride' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'centerOverride' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
56 | static var center: any UserNotificationCenter {
57 | get { centerOverride ?? UNUserNotificationCenter.current() }
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:302:40: warning: type 'UNNotificationRequest' does not conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
300 | public static func getPendingNotificationRequests() async -> [UNNotificationRequest] {
301 | let notificationCenter = center
302 | return await pendingOperations.enqueue {
| `- warning: type 'UNNotificationRequest' does not conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
303 | await notificationCenter.pendingNotificationRequests()
304 | }.value
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/UserNotifications.framework/Headers/UNNotificationRequest.h:16:12: note: class 'UNNotificationRequest' does not conform to the 'Sendable' protocol
14 |
15 | API_AVAILABLE(macos(10.14), ios(10.0), watchos(3.0), tvos(10.0))
16 | @interface UNNotificationRequest : NSObject <NSCopying, NSSecureCoding>
| `- note: class 'UNNotificationRequest' does not conform to the 'Sendable' protocol
17 |
18 | // The unique identifier for this notification request. It can be used to replace or remove a pending notification request or a delivered notification.
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:2:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'UserNotifications'
1 | import Foundation
2 | import UserNotifications
| `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'UserNotifications'
3 |
4 | protocol UserNotificationCenter {
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:304:11: warning: type 'UNNotificationRequest' does not conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
302 | return await pendingOperations.enqueue {
303 | await notificationCenter.pendingNotificationRequests()
304 | }.value
| `- warning: type 'UNNotificationRequest' does not conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
305 | }
306 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/UserNotifications.framework/Headers/UNNotificationRequest.h:16:12: note: class 'UNNotificationRequest' does not conform to the 'Sendable' protocol
14 |
15 | API_AVAILABLE(macos(10.14), ios(10.0), watchos(3.0), tvos(10.0))
16 | @interface UNNotificationRequest : NSObject <NSCopying, NSSecureCoding>
| `- note: class 'UNNotificationRequest' does not conform to the 'Sendable' protocol
17 |
18 | // The unique identifier for this notification request. It can be used to replace or remove a pending notification request or a delivered notification.
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:476:25: warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
474 | defer { lock.unlock() }
475 | let previous = tail
476 | let task = Task {
| `- warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
477 | await previous?.value
478 | return try await operation()
| `- note: closure captures 'operation' which is accessible to code in the current task
479 | }
480 | // Failure must not prevent later operations (especially removals).
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:463:25: warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
461 | defer { lock.unlock() }
462 | let previous = tail
463 | let task = Task {
| `- warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
464 | await previous?.value
465 | return await operation()
| `- note: closure captures 'operation' which is accessible to code in the current task
466 | }
467 | tail = Task { _ = await task.value }
[4/4] Emitting module NotificationManager
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:54:24: warning: static property 'pendingOperations' is not concurrency-safe because non-'Sendable' type 'PendingNotificationOperations' may have shared mutable state; this is an error in the Swift 6 language mode
52 | public struct NotificationManager {
53 | private static let defaultAuthorizationOptions: UNAuthorizationOptions = [.alert, .sound, .badge]
54 | private static let pendingOperations = PendingNotificationOperations()
| |- warning: static property 'pendingOperations' is not concurrency-safe because non-'Sendable' type 'PendingNotificationOperations' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'pendingOperations' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
55 | private static var centerOverride: (any UserNotificationCenter)?
56 | static var center: any UserNotificationCenter {
:
452 | /// Registers operations synchronously, then waits for each predecessor to finish.
453 | /// A serial task chain also preserves ordering across suspension points.
454 | private final class PendingNotificationOperations {
| `- note: class 'PendingNotificationOperations' does not conform to the 'Sendable' protocol
455 | private let lock = NSLock()
456 | private var tail: Task<Void, Never>?
/Users/admin/builder/spi-builder-workspace/Sources/NotificationManager/NotificationManager.swift:55:24: warning: static property 'centerOverride' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
53 | private static let defaultAuthorizationOptions: UNAuthorizationOptions = [.alert, .sound, .badge]
54 | private static let pendingOperations = PendingNotificationOperations()
55 | private static var centerOverride: (any UserNotificationCenter)?
| |- warning: static property 'centerOverride' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'centerOverride' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'centerOverride' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
56 | static var center: any UserNotificationCenter {
57 | get { centerOverride ?? UNUserNotificationCenter.current() }
Build complete! (4.51s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "NotificationManager",
"name" : "NotificationManager",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "10.15"
},
{
"name" : "ios",
"version" : "13.0"
},
{
"name" : "visionos",
"version" : "1.0"
}
],
"products" : [
{
"name" : "NotificationManager",
"targets" : [
"NotificationManager"
],
"type" : {
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]
}
}
],
"targets" : [
{
"c99name" : "NotificationManagerTests",
"module_type" : "SwiftTarget",
"name" : "NotificationManagerTests",
"path" : "Tests/NotificationManagerTests",
"sources" : [
"NotificationManagerTests.swift"
],
"target_dependencies" : [
"NotificationManager"
],
"type" : "test"
},
{
"c99name" : "NotificationManager",
"module_type" : "SwiftTarget",
"name" : "NotificationManager",
"path" : "Sources/NotificationManager",
"product_memberships" : [
"NotificationManager"
],
"sources" : [
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],
"type" : "library"
}
],
"tools_version" : "5.9"
}
Done.