Swift Package IndexBuild Information
Failed to build UserDefaultsExtensions, reference v1.0.1 (bab30c), with Swift 6.3 for macOS (SPM) on 13 Apr 2026 05:35:44 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build 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/elegantchaos/UserDefaultsExtensions.git
Reference: v1.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/elegantchaos/UserDefaultsExtensions
* tag v1.0.1 -> FETCH_HEAD
HEAD is now at bab30cf Added onChanged
Cloned https://github.com/elegantchaos/UserDefaultsExtensions.git
Revision (git rev-parse @):
bab30cfe8908918fa295460e51c5e80ad9fac7b6
SUCCESS checkout https://github.com/elegantchaos/UserDefaultsExtensions.git at v1.0.1
Fetching https://github.com/elegantchaos/XCTestExtensions.git
[1/571] Fetching xctestextensions
Fetched https://github.com/elegantchaos/XCTestExtensions.git from cache (0.67s)
Computing version for https://github.com/elegantchaos/XCTestExtensions.git
Computed https://github.com/elegantchaos/XCTestExtensions.git at 1.5.1 (1.34s)
Fetching https://github.com/elegantchaos/Matchable.git
[1/166] Fetching matchable
Fetched https://github.com/elegantchaos/Matchable.git from cache (0.83s)
Computing version for https://github.com/elegantchaos/Matchable.git
Computed https://github.com/elegantchaos/Matchable.git at 1.0.7 (1.53s)
Creating working copy for https://github.com/elegantchaos/Matchable.git
Working copy of https://github.com/elegantchaos/Matchable.git resolved at 1.0.7
Creating working copy for https://github.com/elegantchaos/XCTestExtensions.git
Working copy of https://github.com/elegantchaos/XCTestExtensions.git resolved at 1.5.1
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ResolveProductDependencies
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Resolving dependencies ...
{
"identity": ".resolve-product-dependencies",
"name": "resolve-dependencies",
"url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"traits": [
"default"
],
"dependencies": [
{
"identity": "userdefaultsextensions",
"name": "UserDefaultsExtensions",
"url": "https://github.com/elegantchaos/UserDefaultsExtensions.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/UserDefaultsExtensions",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/elegantchaos/UserDefaultsExtensions.git
[1/43] Fetching userdefaultsextensions
Fetched https://github.com/elegantchaos/UserDefaultsExtensions.git from cache (0.62s)
Creating working copy for https://github.com/elegantchaos/UserDefaultsExtensions.git
Working copy of https://github.com/elegantchaos/UserDefaultsExtensions.git resolved at v1.0.1 (bab30cf)
warning: '.resolve-product-dependencies': dependency 'userdefaultsextensions' is not used by any target
Found 0 product dependencies
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Build
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Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/elegantchaos/UserDefaultsExtensions.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--6988338F2F200930.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/6] Emitting module UserDefaultsExtensions
/Users/admin/builder/spi-builder-workspace/Sources/UserDefaultsExtensions/UserDefaults+Combine.swift:15:80: error: 'AnyCancellable' is only available in macOS 10.15 or newer
7 | import Foundation
8 |
9 | public extension UserDefaults {
| `- note: add '@available' attribute to enclosing extension
10 | /// Perform an action if the defaults have been changed.
11 | ///
:
13 | /// firing the action multiple times after a quick sequence of changes.
14 |
15 | func onChanged(delay: TimeInterval = 1.0, _ action: @escaping () -> ()) -> AnyCancellable {
| | `- error: 'AnyCancellable' is only available in macOS 10.15 or newer
| `- note: add '@available' attribute to enclosing instance method
16 | return NotificationCenter.default
17 | .publisher(for: UserDefaults.didChangeNotification, object: self)
[4/6] Compiling UserDefaultsExtensions UserDefaultsRepresentable.swift
[5/6] Compiling UserDefaultsExtensions UserDefaultsExtensions.swift
[6/6] Compiling UserDefaultsExtensions UserDefaults+Combine.swift
/Users/admin/builder/spi-builder-workspace/Sources/UserDefaultsExtensions/UserDefaults+Combine.swift:15:80: error: 'AnyCancellable' is only available in macOS 10.15 or newer
7 | import Foundation
8 |
9 | public extension UserDefaults {
| `- note: add '@available' attribute to enclosing extension
10 | /// Perform an action if the defaults have been changed.
11 | ///
:
13 | /// firing the action multiple times after a quick sequence of changes.
14 |
15 | func onChanged(delay: TimeInterval = 1.0, _ action: @escaping () -> ()) -> AnyCancellable {
| | `- error: 'AnyCancellable' is only available in macOS 10.15 or newer
| `- note: add '@available' attribute to enclosing instance method
16 | return NotificationCenter.default
17 | .publisher(for: UserDefaults.didChangeNotification, object: self)
/Users/admin/builder/spi-builder-workspace/Sources/UserDefaultsExtensions/UserDefaults+Combine.swift:17:14: error: 'publisher(for:object:)' is only available in macOS 10.15 or newer
7 | import Foundation
8 |
9 | public extension UserDefaults {
| `- note: add '@available' attribute to enclosing extension
10 | /// Perform an action if the defaults have been changed.
11 | ///
:
13 | /// firing the action multiple times after a quick sequence of changes.
14 |
15 | func onChanged(delay: TimeInterval = 1.0, _ action: @escaping () -> ()) -> AnyCancellable {
| `- note: add '@available' attribute to enclosing instance method
16 | return NotificationCenter.default
17 | .publisher(for: UserDefaults.didChangeNotification, object: self)
| |- error: 'publisher(for:object:)' is only available in macOS 10.15 or newer
| `- note: add 'if #available' version check
18 | .debounce(for: .seconds(delay), scheduler: RunLoop.main)
19 | .sink { _ in
/Users/admin/builder/spi-builder-workspace/Sources/UserDefaultsExtensions/UserDefaults+Combine.swift:18:14: error: 'debounce(for:scheduler:options:)' is only available in macOS 10.15 or newer
7 | import Foundation
8 |
9 | public extension UserDefaults {
| `- note: add '@available' attribute to enclosing extension
10 | /// Perform an action if the defaults have been changed.
11 | ///
:
13 | /// firing the action multiple times after a quick sequence of changes.
14 |
15 | func onChanged(delay: TimeInterval = 1.0, _ action: @escaping () -> ()) -> AnyCancellable {
| `- note: add '@available' attribute to enclosing instance method
16 | return NotificationCenter.default
17 | .publisher(for: UserDefaults.didChangeNotification, object: self)
18 | .debounce(for: .seconds(delay), scheduler: RunLoop.main)
| |- error: 'debounce(for:scheduler:options:)' is only available in macOS 10.15 or newer
| `- note: add 'if #available' version check
19 | .sink { _ in
20 | action()
/Users/admin/builder/spi-builder-workspace/Sources/UserDefaultsExtensions/UserDefaults+Combine.swift:19:14: error: 'sink(receiveValue:)' is only available in macOS 10.15 or newer
7 | import Foundation
8 |
9 | public extension UserDefaults {
| `- note: add '@available' attribute to enclosing extension
10 | /// Perform an action if the defaults have been changed.
11 | ///
:
13 | /// firing the action multiple times after a quick sequence of changes.
14 |
15 | func onChanged(delay: TimeInterval = 1.0, _ action: @escaping () -> ()) -> AnyCancellable {
| `- note: add '@available' attribute to enclosing instance method
16 | return NotificationCenter.default
17 | .publisher(for: UserDefaults.didChangeNotification, object: self)
18 | .debounce(for: .seconds(delay), scheduler: RunLoop.main)
19 | .sink { _ in
| |- error: 'sink(receiveValue:)' is only available in macOS 10.15 or newer
| `- note: add 'if #available' version check
20 | action()
21 | }
BUILD FAILURE 6.3 macosSpm