Swift Package IndexBuild Information
Successful build of UserStorage, reference 0.2.0 (81662e), with Swift 6.1 for macOS (SPM) on 20 Apr 2026 08:25:07 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: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/smart-byte/UserStorage.git
Reference: 0.2.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/smart-byte/UserStorage
* tag 0.2.0 -> FETCH_HEAD
HEAD is now at 81662e6 Improve Public API (#3)
Cloned https://github.com/smart-byte/UserStorage.git
Revision (git rev-parse @):
81662e693d34a03bd6c8b5f58b9c01e1eacb32f7
SUCCESS checkout https://github.com/smart-byte/UserStorage.git at 0.2.0
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Build
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Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/smart-byte/UserStorage.git
https://github.com/smart-byte/UserStorage.git
{
"dependencies" : [
],
"manifest_display_name" : "UserStorage",
"name" : "UserStorage",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "10.15"
},
{
"name" : "ios",
"version" : "13.0"
},
{
"name" : "watchos",
"version" : "6.0"
},
{
"name" : "tvos",
"version" : "13.0"
}
],
"products" : [
{
"name" : "UserStorage",
"targets" : [
"UserStorage"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "UserStorageTests",
"module_type" : "SwiftTarget",
"name" : "UserStorageTests",
"path" : "Tests/UserStorageTests",
"sources" : [
"CoreDataStackTests.swift",
"UserStorageServiceTests.swift",
"UserStorageTests.swift"
],
"target_dependencies" : [
"UserStorage"
],
"type" : "test"
},
{
"c99name" : "UserStorage",
"module_type" : "SwiftTarget",
"name" : "UserStorage",
"path" : "Sources/UserStorage",
"product_memberships" : [
"UserStorage"
],
"sources" : [
"CoreDataStack.swift",
"PublishedUserStorage.swift",
"UserStorage.swift",
"UserStorageService.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
[3/7] Compiling UserStorage UserStorageService.swift
[4/7] Compiling UserStorage CoreDataStack.swift
/Users/admin/builder/spi-builder-workspace/Sources/UserStorage/CoreDataStack.swift:4:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CoreDataStack' may have shared mutable state; this is an error in the Swift 6 language mode
1 | import CoreData
2 |
3 | public class CoreDataStack {
| `- note: class 'CoreDataStack' does not conform to the 'Sendable' protocol
4 | public static let shared = CoreDataStack()
| |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CoreDataStack' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
5 |
6 | let persistentContainer: NSPersistentContainer
[5/7] Compiling UserStorage UserStorage.swift
/Users/admin/builder/spi-builder-workspace/Sources/UserStorage/UserStorage.swift:10:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'UserStorage' may have shared mutable state; this is an error in the Swift 6 language mode
7 | }
8 |
9 | public class UserStorage {
| `- note: class 'UserStorage' does not conform to the 'Sendable' protocol
10 | public static let shared = UserStorage()
| |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'UserStorage' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
12 | private let service: UserStorageService
[6/7] Compiling UserStorage PublishedUserStorage.swift
[7/7] Emitting module UserStorage
/Users/admin/builder/spi-builder-workspace/Sources/UserStorage/CoreDataStack.swift:4:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CoreDataStack' may have shared mutable state; this is an error in the Swift 6 language mode
1 | import CoreData
2 |
3 | public class CoreDataStack {
| `- note: class 'CoreDataStack' does not conform to the 'Sendable' protocol
4 | public static let shared = CoreDataStack()
| |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CoreDataStack' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
5 |
6 | let persistentContainer: NSPersistentContainer
/Users/admin/builder/spi-builder-workspace/Sources/UserStorage/UserStorage.swift:10:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'UserStorage' may have shared mutable state; this is an error in the Swift 6 language mode
7 | }
8 |
9 | public class UserStorage {
| `- note: class 'UserStorage' does not conform to the 'Sendable' protocol
10 | public static let shared = UserStorage()
| |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'UserStorage' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
12 | private let service: UserStorageService
Build complete! (8.09s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "UserStorage",
"name" : "UserStorage",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "10.15"
},
{
"name" : "ios",
"version" : "13.0"
},
{
"name" : "watchos",
"version" : "6.0"
},
{
"name" : "tvos",
"version" : "13.0"
}
],
"products" : [
{
"name" : "UserStorage",
"targets" : [
"UserStorage"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "UserStorageTests",
"module_type" : "SwiftTarget",
"name" : "UserStorageTests",
"path" : "Tests/UserStorageTests",
"sources" : [
"CoreDataStackTests.swift",
"UserStorageServiceTests.swift",
"UserStorageTests.swift"
],
"target_dependencies" : [
"UserStorage"
],
"type" : "test"
},
{
"c99name" : "UserStorage",
"module_type" : "SwiftTarget",
"name" : "UserStorage",
"path" : "Sources/UserStorage",
"product_memberships" : [
"UserStorage"
],
"sources" : [
"CoreDataStack.swift",
"PublishedUserStorage.swift",
"UserStorage.swift",
"UserStorageService.swift"
],
"type" : "library"
}
],
"tools_version" : "5.9"
}
Done.