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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Zephyr, reference master (6a17bc), with Swift 6.1 for Linux on 28 Apr 2025 12:37:06 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ArtSabintsev/Zephyr.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/ArtSabintsev/Zephyr
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 6a17bcf Bump rexml from 3.2.5 to 3.2.8 (#69)
Cloned https://github.com/ArtSabintsev/Zephyr.git
Revision (git rev-parse @):
6a17bcfec8a650cc8ac3610ef2aed65fd509a945
SUCCESS checkout https://github.com/ArtSabintsev/Zephyr.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ArtSabintsev/Zephyr.git
https://github.com/ArtSabintsev/Zephyr.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Zephyr",
  "name" : "Zephyr",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "11.0"
    },
    {
      "name" : "tvos",
      "version" : "11.0"
    },
    {
      "name" : "watchos",
      "version" : "9.0"
    }
  ],
  "products" : [
    {
      "name" : "Zephyr",
      "targets" : [
        "Zephyr"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "Zephyr",
      "module_type" : "SwiftTarget",
      "name" : "Zephyr",
      "path" : "Sources",
      "product_memberships" : [
        "Zephyr"
      ],
      "sources" : [
        "Zephyr.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/4] Emitting module Zephyr
/host/spi-builder-workspace/Sources/Zephyr.swift:22:1: error: Objective-C interoperability is disabled
 20 | }
 21 |
 22 | @objcMembers
    | `- error: Objective-C interoperability is disabled
 23 | public final class Zephyr: NSObject {
 24 |     /// A debug flag.
/host/spi-builder-workspace/Sources/Zephyr.swift:29:23: warning: static property 'debugEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 27 |     ///
 28 |     /// By default, this flag is set to **false**.
 29 |     public static var debugEnabled = false
    |                       |- warning: static property 'debugEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'debugEnabled' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'debugEnabled' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 30 |
 31 |     /// If **true**, then `NSUbiquitousKeyValueStore.synchronize()` will be called immediately after any change is made.
/host/spi-builder-workspace/Sources/Zephyr.swift:32:23: warning: static property 'syncUbiquitousKeyValueStoreOnChange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 30 |
 31 |     /// If **true**, then `NSUbiquitousKeyValueStore.synchronize()` will be called immediately after any change is made.
 32 |     public static var syncUbiquitousKeyValueStoreOnChange = true
    |                       |- warning: static property 'syncUbiquitousKeyValueStoreOnChange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'syncUbiquitousKeyValueStoreOnChange' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'syncUbiquitousKeyValueStoreOnChange' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 33 |
 34 |     /// A string containing the notification name that will be posted when Zephyr receives updated data from iCloud.
/host/spi-builder-workspace/Sources/Zephyr.swift:38:24: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'Zephyr' may have shared mutable state; this is an error in the Swift 6 language mode
 21 |
 22 | @objcMembers
 23 | public final class Zephyr: NSObject {
    |                    `- note: class 'Zephyr' does not conform to the 'Sendable' protocol
 24 |     /// A debug flag.
 25 |     ///
    :
 36 |
 37 |     /// The singleton for Zephyr.
 38 |     private static let shared = Zephyr()
    |                        |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'Zephyr' 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
 39 |
 40 |     /// A shared key that stores the last synchronization date between `UserDefaults` and `NSUbiquitousKeyValueStore`.
/host/spi-builder-workspace/Sources/Zephyr.swift:285:3: warning: 'public' modifier conflicts with extension's default access of 'private'
283 |   /// - Parameters:
284 |   ///     - to: A `UserDefaults` suite.
285 |   public static func setUserDefaultsSuite(to suite: UserDefaults) {
    |   `- warning: 'public' modifier conflicts with extension's default access of 'private'
286 |       shared.userDefaults = suite
287 |       printStatus(status: "Updated UserDefaults suite.")
/host/spi-builder-workspace/Sources/Zephyr.swift:438:94: error: cannot find type 'NSKeyValueChangeKey' in scope
436 |     }
437 |
438 |     public override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey: Any]?, context: UnsafeMutableRawPointer?) {
    |                                                                                              `- error: cannot find type 'NSKeyValueChangeKey' in scope
439 |         guard let keyPath = keyPath, let object = object, monitoredKeys.contains(keyPath) else {
440 |             return
/host/spi-builder-workspace/Sources/Zephyr.swift:458:2: error: Objective-C interoperability is disabled
456 | // MARK: - Observers (Objective-C)
457 |
458 | @objc
    |  `- error: Objective-C interoperability is disabled
459 | extension Zephyr {
460 |
[4/4] Compiling Zephyr Zephyr.swift
/host/spi-builder-workspace/Sources/Zephyr.swift:22:1: error: Objective-C interoperability is disabled
 20 | }
 21 |
 22 | @objcMembers
    | `- error: Objective-C interoperability is disabled
 23 | public final class Zephyr: NSObject {
 24 |     /// A debug flag.
/host/spi-builder-workspace/Sources/Zephyr.swift:29:23: warning: static property 'debugEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 27 |     ///
 28 |     /// By default, this flag is set to **false**.
 29 |     public static var debugEnabled = false
    |                       |- warning: static property 'debugEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'debugEnabled' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'debugEnabled' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 30 |
 31 |     /// If **true**, then `NSUbiquitousKeyValueStore.synchronize()` will be called immediately after any change is made.
/host/spi-builder-workspace/Sources/Zephyr.swift:32:23: warning: static property 'syncUbiquitousKeyValueStoreOnChange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 30 |
 31 |     /// If **true**, then `NSUbiquitousKeyValueStore.synchronize()` will be called immediately after any change is made.
 32 |     public static var syncUbiquitousKeyValueStoreOnChange = true
    |                       |- warning: static property 'syncUbiquitousKeyValueStoreOnChange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'syncUbiquitousKeyValueStoreOnChange' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'syncUbiquitousKeyValueStoreOnChange' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 33 |
 34 |     /// A string containing the notification name that will be posted when Zephyr receives updated data from iCloud.
/host/spi-builder-workspace/Sources/Zephyr.swift:38:24: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'Zephyr' may have shared mutable state; this is an error in the Swift 6 language mode
 21 |
 22 | @objcMembers
 23 | public final class Zephyr: NSObject {
    |                    `- note: class 'Zephyr' does not conform to the 'Sendable' protocol
 24 |     /// A debug flag.
 25 |     ///
    :
 36 |
 37 |     /// The singleton for Zephyr.
 38 |     private static let shared = Zephyr()
    |                        |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'Zephyr' 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
 39 |
 40 |     /// A shared key that stores the last synchronization date between `UserDefaults` and `NSUbiquitousKeyValueStore`.
/host/spi-builder-workspace/Sources/Zephyr.swift:285:3: warning: 'public' modifier conflicts with extension's default access of 'private'
283 |   /// - Parameters:
284 |   ///     - to: A `UserDefaults` suite.
285 |   public static func setUserDefaultsSuite(to suite: UserDefaults) {
    |   `- warning: 'public' modifier conflicts with extension's default access of 'private'
286 |       shared.userDefaults = suite
287 |       printStatus(status: "Updated UserDefaults suite.")
/host/spi-builder-workspace/Sources/Zephyr.swift:438:94: error: cannot find type 'NSKeyValueChangeKey' in scope
436 |     }
437 |
438 |     public override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey: Any]?, context: UnsafeMutableRawPointer?) {
    |                                                                                              `- error: cannot find type 'NSKeyValueChangeKey' in scope
439 |         guard let keyPath = keyPath, let object = object, monitoredKeys.contains(keyPath) else {
440 |             return
/host/spi-builder-workspace/Sources/Zephyr.swift:458:2: error: Objective-C interoperability is disabled
456 | // MARK: - Observers (Objective-C)
457 |
458 | @objc
    |  `- error: Objective-C interoperability is disabled
459 | extension Zephyr {
460 |
/host/spi-builder-workspace/Sources/Zephyr.swift:59:16: error: cannot find 'NSUbiquitousKeyValueStore' in scope
 57 |     /// A session-persisted variable to directly access all of the `NSUbiquitousKeyValueStore` elements.
 58 |     private var zephyrRemoteStoreDictionary: [String: Any] {
 59 |         return NSUbiquitousKeyValueStore.default.dictionaryRepresentation
    |                `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
 60 |     }
 61 |
/host/spi-builder-workspace/Sources/Zephyr.swift:71:9: error: cannot find 'NSUbiquitousKeyValueStore' in scope
 69 |         super.init()
 70 |         setupNotifications()
 71 |         NSUbiquitousKeyValueStore.default.synchronize()
    |         `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
 72 |     }
 73 |
/host/spi-builder-workspace/Sources/Zephyr.swift:78:30: error: value of type 'UserDefaults' has no member 'removeObserver'
 76 |         zephyrQueue.sync {
 77 |             for key in registeredObservationKeys {
 78 |                 userDefaults.removeObserver(self, forKeyPath: key)
    |                              `- error: value of type 'UserDefaults' has no member 'removeObserver'
 79 |             }
 80 |         }
/host/spi-builder-workspace/Sources/Zephyr.swift:225:54: error: cannot find 'NSUbiquitousKeyValueStore' in scope
223 |     private func setupNotifications() {
224 |         NotificationCenter.default.addObserver(self, selector: #selector(keysDidChangeOnCloud(notification:)),
225 |                                                name: NSUbiquitousKeyValueStore.didChangeExternallyNotification,
    |                                                      `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
226 |                                                object: nil)
227 |
/host/spi-builder-workspace/Sources/Zephyr.swift:224:64: error: '#selector' can only be used with the Objective-C runtime
222 |     /// Setup UIApplication and UIScene event state notifications.
223 |     private func setupNotifications() {
224 |         NotificationCenter.default.addObserver(self, selector: #selector(keysDidChangeOnCloud(notification:)),
    |                                                                `- error: '#selector' can only be used with the Objective-C runtime
225 |                                                name: NSUbiquitousKeyValueStore.didChangeExternallyNotification,
226 |                                                object: nil)
/host/spi-builder-workspace/Sources/Zephyr.swift:321:31: error: cannot find 'NSUbiquitousKeyValueStore' in scope
319 |     ///     - value: The value that will be synchronized. Must be passed with a key, otherwise, nothing will happen.
320 |     func syncToCloud(key: String? = nil, value: Any? = nil) {
321 |         let ubiquitousStore = NSUbiquitousKeyValueStore.default
    |                               `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
322 |         ubiquitousStore.set(Date(), forKey: ZephyrSyncKey)
323 |
/host/spi-builder-workspace/Sources/Zephyr.swift:345:13: error: cannot find 'NSUbiquitousKeyValueStore' in scope
343 |             Zephyr.printKeySyncStatus(key: key, value: value, destination: .remote)
344 |         } else {
345 |             NSUbiquitousKeyValueStore.default.removeObject(forKey: key)
    |             `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
346 |             Zephyr.printKeySyncStatus(key: key, value: value, destination: .remote)
347 |         }
/host/spi-builder-workspace/Sources/Zephyr.swift:411:26: error: value of type 'UserDefaults' has no member 'addObserver'
409 |         if !registeredObservationKeys.contains(key) {
410 |
411 |             userDefaults.addObserver(self, forKeyPath: key, options: .new, context: nil)
    |                          `- error: value of type 'UserDefaults' has no member 'addObserver'
412 |             registeredObservationKeys.append(key)
413 |
/host/spi-builder-workspace/Sources/Zephyr.swift:411:71: error: cannot infer contextual base in reference to member 'new'
409 |         if !registeredObservationKeys.contains(key) {
410 |
411 |             userDefaults.addObserver(self, forKeyPath: key, options: .new, context: nil)
    |                                                                       `- error: cannot infer contextual base in reference to member 'new'
412 |             registeredObservationKeys.append(key)
413 |
/host/spi-builder-workspace/Sources/Zephyr.swift:411:85: error: 'nil' requires a contextual type
409 |         if !registeredObservationKeys.contains(key) {
410 |
411 |             userDefaults.addObserver(self, forKeyPath: key, options: .new, context: nil)
    |                                                                                     `- error: 'nil' requires a contextual type
412 |             registeredObservationKeys.append(key)
413 |
/host/spi-builder-workspace/Sources/Zephyr.swift:430:26: error: value of type 'UserDefaults' has no member 'removeObserver'
428 |         if let index = registeredObservationKeys.firstIndex(of: key) {
429 |
430 |             userDefaults.removeObserver(self, forKeyPath: key, context: nil)
    |                          `- error: value of type 'UserDefaults' has no member 'removeObserver'
431 |             registeredObservationKeys.remove(at: index)
432 |
/host/spi-builder-workspace/Sources/Zephyr.swift:430:73: error: 'nil' requires a contextual type
428 |         if let index = registeredObservationKeys.firstIndex(of: key) {
429 |
430 |             userDefaults.removeObserver(self, forKeyPath: key, context: nil)
    |                                                                         `- error: 'nil' requires a contextual type
431 |             registeredObservationKeys.remove(at: index)
432 |
/host/spi-builder-workspace/Sources/Zephyr.swift:445:16: warning: capture of 'self' with non-sendable type 'Zephyr' in a '@Sendable' closure; this is an error in the Swift 6 language mode
 21 |
 22 | @objcMembers
 23 | public final class Zephyr: NSObject {
    |                    `- note: class 'Zephyr' does not conform to the 'Sendable' protocol
 24 |     /// A debug flag.
 25 |     ///
    :
443 |         // Synchronize changes if key is monitored and if key is currently registered to respond to changes
444 |         zephyrQueue.async {
445 |             if self.registeredObservationKeys.contains(keyPath) {
    |                `- warning: capture of 'self' with non-sendable type 'Zephyr' in a '@Sendable' closure; this is an error in the Swift 6 language mode
446 |                 if object is UserDefaults {
447 |                     self.userDefaults.set(Date(), forKey: self.ZephyrSyncKey)
/host/spi-builder-workspace/Sources/Zephyr.swift:446:20: warning: capture of 'object' with non-sendable type 'Any' in a '@Sendable' closure; this is an error in the Swift 6 language mode
444 |         zephyrQueue.async {
445 |             if self.registeredObservationKeys.contains(keyPath) {
446 |                 if object is UserDefaults {
    |                    `- warning: capture of 'object' with non-sendable type 'Any' in a '@Sendable' closure; this is an error in the Swift 6 language mode
447 |                     self.userDefaults.set(Date(), forKey: self.ZephyrSyncKey)
448 |                 }
/host/spi-builder-workspace/Sources/Zephyr.swift:463:9: error: cannot find 'NSUbiquitousKeyValueStore' in scope
461 |     /// Observation method for UIApplicationWillEnterForegroundNotification
462 |     func willEnterForeground(notification: Notification) {
463 |         NSUbiquitousKeyValueStore.default.synchronize()
    |         `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
464 |     }
465 |
/host/spi-builder-workspace/Sources/Zephyr.swift:468:33: error: cannot find 'NSUbiquitousKeyValueStore' in scope
466 |     ///  Observation method for `NSUbiquitousKeyValueStore.didChangeExternallyNotification`
467 |     func keysDidChangeOnCloud(notification: Notification) {
468 |         if notification.name == NSUbiquitousKeyValueStore.didChangeExternallyNotification {
    |                                 `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
469 |             guard let userInfo = (notification as NSNotification).userInfo,
470 |                 let cloudKeys = userInfo[NSUbiquitousKeyValueStoreChangedKeysKey] as? [String],
/host/spi-builder-workspace/Sources/Zephyr.swift:470:42: error: cannot find 'NSUbiquitousKeyValueStoreChangedKeysKey' in scope
468 |         if notification.name == NSUbiquitousKeyValueStore.didChangeExternallyNotification {
469 |             guard let userInfo = (notification as NSNotification).userInfo,
470 |                 let cloudKeys = userInfo[NSUbiquitousKeyValueStoreChangedKeysKey] as? [String],
    |                                          `- error: cannot find 'NSUbiquitousKeyValueStoreChangedKeysKey' in scope
471 |                 let remoteStoredDate = zephyrRemoteStoreDictionary[ZephyrSyncKey] as? Date else {
472 |                     return
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/3] Emitting module Zephyr
/host/spi-builder-workspace/Sources/Zephyr.swift:22:1: error: Objective-C interoperability is disabled
 20 | }
 21 |
 22 | @objcMembers
    | `- error: Objective-C interoperability is disabled
 23 | public final class Zephyr: NSObject {
 24 |     /// A debug flag.
/host/spi-builder-workspace/Sources/Zephyr.swift:285:3: warning: 'public' modifier conflicts with extension's default access of 'private'
283 |   /// - Parameters:
284 |   ///     - to: A `UserDefaults` suite.
285 |   public static func setUserDefaultsSuite(to suite: UserDefaults) {
    |   `- warning: 'public' modifier conflicts with extension's default access of 'private'
286 |       shared.userDefaults = suite
287 |       printStatus(status: "Updated UserDefaults suite.")
/host/spi-builder-workspace/Sources/Zephyr.swift:438:94: error: cannot find type 'NSKeyValueChangeKey' in scope
436 |     }
437 |
438 |     public override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey: Any]?, context: UnsafeMutableRawPointer?) {
    |                                                                                              `- error: cannot find type 'NSKeyValueChangeKey' in scope
439 |         guard let keyPath = keyPath, let object = object, monitoredKeys.contains(keyPath) else {
440 |             return
/host/spi-builder-workspace/Sources/Zephyr.swift:458:2: error: Objective-C interoperability is disabled
456 | // MARK: - Observers (Objective-C)
457 |
458 | @objc
    |  `- error: Objective-C interoperability is disabled
459 | extension Zephyr {
460 |
[3/3] Compiling Zephyr Zephyr.swift
/host/spi-builder-workspace/Sources/Zephyr.swift:22:1: error: Objective-C interoperability is disabled
 20 | }
 21 |
 22 | @objcMembers
    | `- error: Objective-C interoperability is disabled
 23 | public final class Zephyr: NSObject {
 24 |     /// A debug flag.
/host/spi-builder-workspace/Sources/Zephyr.swift:285:3: warning: 'public' modifier conflicts with extension's default access of 'private'
283 |   /// - Parameters:
284 |   ///     - to: A `UserDefaults` suite.
285 |   public static func setUserDefaultsSuite(to suite: UserDefaults) {
    |   `- warning: 'public' modifier conflicts with extension's default access of 'private'
286 |       shared.userDefaults = suite
287 |       printStatus(status: "Updated UserDefaults suite.")
/host/spi-builder-workspace/Sources/Zephyr.swift:438:94: error: cannot find type 'NSKeyValueChangeKey' in scope
436 |     }
437 |
438 |     public override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey: Any]?, context: UnsafeMutableRawPointer?) {
    |                                                                                              `- error: cannot find type 'NSKeyValueChangeKey' in scope
439 |         guard let keyPath = keyPath, let object = object, monitoredKeys.contains(keyPath) else {
440 |             return
/host/spi-builder-workspace/Sources/Zephyr.swift:458:2: error: Objective-C interoperability is disabled
456 | // MARK: - Observers (Objective-C)
457 |
458 | @objc
    |  `- error: Objective-C interoperability is disabled
459 | extension Zephyr {
460 |
/host/spi-builder-workspace/Sources/Zephyr.swift:59:16: error: cannot find 'NSUbiquitousKeyValueStore' in scope
 57 |     /// A session-persisted variable to directly access all of the `NSUbiquitousKeyValueStore` elements.
 58 |     private var zephyrRemoteStoreDictionary: [String: Any] {
 59 |         return NSUbiquitousKeyValueStore.default.dictionaryRepresentation
    |                `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
 60 |     }
 61 |
/host/spi-builder-workspace/Sources/Zephyr.swift:71:9: error: cannot find 'NSUbiquitousKeyValueStore' in scope
 69 |         super.init()
 70 |         setupNotifications()
 71 |         NSUbiquitousKeyValueStore.default.synchronize()
    |         `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
 72 |     }
 73 |
/host/spi-builder-workspace/Sources/Zephyr.swift:78:30: error: value of type 'UserDefaults' has no member 'removeObserver'
 76 |         zephyrQueue.sync {
 77 |             for key in registeredObservationKeys {
 78 |                 userDefaults.removeObserver(self, forKeyPath: key)
    |                              `- error: value of type 'UserDefaults' has no member 'removeObserver'
 79 |             }
 80 |         }
/host/spi-builder-workspace/Sources/Zephyr.swift:225:54: error: cannot find 'NSUbiquitousKeyValueStore' in scope
223 |     private func setupNotifications() {
224 |         NotificationCenter.default.addObserver(self, selector: #selector(keysDidChangeOnCloud(notification:)),
225 |                                                name: NSUbiquitousKeyValueStore.didChangeExternallyNotification,
    |                                                      `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
226 |                                                object: nil)
227 |
/host/spi-builder-workspace/Sources/Zephyr.swift:224:64: error: '#selector' can only be used with the Objective-C runtime
222 |     /// Setup UIApplication and UIScene event state notifications.
223 |     private func setupNotifications() {
224 |         NotificationCenter.default.addObserver(self, selector: #selector(keysDidChangeOnCloud(notification:)),
    |                                                                `- error: '#selector' can only be used with the Objective-C runtime
225 |                                                name: NSUbiquitousKeyValueStore.didChangeExternallyNotification,
226 |                                                object: nil)
/host/spi-builder-workspace/Sources/Zephyr.swift:321:31: error: cannot find 'NSUbiquitousKeyValueStore' in scope
319 |     ///     - value: The value that will be synchronized. Must be passed with a key, otherwise, nothing will happen.
320 |     func syncToCloud(key: String? = nil, value: Any? = nil) {
321 |         let ubiquitousStore = NSUbiquitousKeyValueStore.default
    |                               `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
322 |         ubiquitousStore.set(Date(), forKey: ZephyrSyncKey)
323 |
/host/spi-builder-workspace/Sources/Zephyr.swift:345:13: error: cannot find 'NSUbiquitousKeyValueStore' in scope
343 |             Zephyr.printKeySyncStatus(key: key, value: value, destination: .remote)
344 |         } else {
345 |             NSUbiquitousKeyValueStore.default.removeObject(forKey: key)
    |             `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
346 |             Zephyr.printKeySyncStatus(key: key, value: value, destination: .remote)
347 |         }
/host/spi-builder-workspace/Sources/Zephyr.swift:411:26: error: value of type 'UserDefaults' has no member 'addObserver'
409 |         if !registeredObservationKeys.contains(key) {
410 |
411 |             userDefaults.addObserver(self, forKeyPath: key, options: .new, context: nil)
    |                          `- error: value of type 'UserDefaults' has no member 'addObserver'
412 |             registeredObservationKeys.append(key)
413 |
/host/spi-builder-workspace/Sources/Zephyr.swift:411:71: error: cannot infer contextual base in reference to member 'new'
409 |         if !registeredObservationKeys.contains(key) {
410 |
411 |             userDefaults.addObserver(self, forKeyPath: key, options: .new, context: nil)
    |                                                                       `- error: cannot infer contextual base in reference to member 'new'
412 |             registeredObservationKeys.append(key)
413 |
/host/spi-builder-workspace/Sources/Zephyr.swift:411:85: error: 'nil' requires a contextual type
409 |         if !registeredObservationKeys.contains(key) {
410 |
411 |             userDefaults.addObserver(self, forKeyPath: key, options: .new, context: nil)
    |                                                                                     `- error: 'nil' requires a contextual type
412 |             registeredObservationKeys.append(key)
413 |
/host/spi-builder-workspace/Sources/Zephyr.swift:430:26: error: value of type 'UserDefaults' has no member 'removeObserver'
428 |         if let index = registeredObservationKeys.firstIndex(of: key) {
429 |
430 |             userDefaults.removeObserver(self, forKeyPath: key, context: nil)
    |                          `- error: value of type 'UserDefaults' has no member 'removeObserver'
431 |             registeredObservationKeys.remove(at: index)
432 |
/host/spi-builder-workspace/Sources/Zephyr.swift:430:73: error: 'nil' requires a contextual type
428 |         if let index = registeredObservationKeys.firstIndex(of: key) {
429 |
430 |             userDefaults.removeObserver(self, forKeyPath: key, context: nil)
    |                                                                         `- error: 'nil' requires a contextual type
431 |             registeredObservationKeys.remove(at: index)
432 |
/host/spi-builder-workspace/Sources/Zephyr.swift:463:9: error: cannot find 'NSUbiquitousKeyValueStore' in scope
461 |     /// Observation method for UIApplicationWillEnterForegroundNotification
462 |     func willEnterForeground(notification: Notification) {
463 |         NSUbiquitousKeyValueStore.default.synchronize()
    |         `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
464 |     }
465 |
/host/spi-builder-workspace/Sources/Zephyr.swift:468:33: error: cannot find 'NSUbiquitousKeyValueStore' in scope
466 |     ///  Observation method for `NSUbiquitousKeyValueStore.didChangeExternallyNotification`
467 |     func keysDidChangeOnCloud(notification: Notification) {
468 |         if notification.name == NSUbiquitousKeyValueStore.didChangeExternallyNotification {
    |                                 `- error: cannot find 'NSUbiquitousKeyValueStore' in scope
469 |             guard let userInfo = (notification as NSNotification).userInfo,
470 |                 let cloudKeys = userInfo[NSUbiquitousKeyValueStoreChangedKeysKey] as? [String],
/host/spi-builder-workspace/Sources/Zephyr.swift:470:42: error: cannot find 'NSUbiquitousKeyValueStoreChangedKeysKey' in scope
468 |         if notification.name == NSUbiquitousKeyValueStore.didChangeExternallyNotification {
469 |             guard let userInfo = (notification as NSNotification).userInfo,
470 |                 let cloudKeys = userInfo[NSUbiquitousKeyValueStoreChangedKeysKey] as? [String],
    |                                          `- error: cannot find 'NSUbiquitousKeyValueStoreChangedKeysKey' in scope
471 |                 let remoteStoredDate = zephyrRemoteStoreDictionary[ZephyrSyncKey] as? Date else {
472 |                     return
BUILD FAILURE 6.1 linux