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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

Successful build of MockDuck, reference main (4729d1), with Swift 6.0 for macOS (SPM) on 1 Nov 2024 03:10:56 UTC.

Swift 6 data race errors: 13

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/buzzfeed/MockDuck.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/buzzfeed/MockDuck
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 4729d15 Merge pull request #32 from buzzfeed/feature/update-installation-readme
Cloned https://github.com/buzzfeed/MockDuck.git
Revision (git rev-parse @):
4729d150c199f6920219c1ea969d54dcd0efe943
SUCCESS checkout https://github.com/buzzfeed/MockDuck.git at main
========================================
ResolveProductDependencies
========================================
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",
  "dependencies": [
    {
      "identity": "mockduck",
      "name": "MockDuck",
      "url": "https://github.com/buzzfeed/MockDuck.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/MockDuck",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/buzzfeed/MockDuck.git
[1/572] Fetching mockduck
Fetched https://github.com/buzzfeed/MockDuck.git from cache (0.82s)
Creating working copy for https://github.com/buzzfeed/MockDuck.git
Working copy of https://github.com/buzzfeed/MockDuck.git resolved at main (4729d15)
warning: '.resolve-product-dependencies': dependency 'mockduck' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/buzzfeed/MockDuck.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/13] Compiling MockDuck MockURLProtocol.swift
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockURLProtocol.swift:13:7: warning: non-final class 'MockURLProtocol' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
11 | /// This is the URLProtocol subclass that intercepts all network requests and uses `MockSession` to
12 | /// stub out the responses. One of these is instantiated per request.
13 | class MockURLProtocol: URLProtocol, URLSessionDelegate, URLSessionDataDelegate {
   |       `- warning: non-final class 'MockURLProtocol' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
14 |     private struct Constants {
15 |         static let ProtocolHandled = "com.buzzfeed.MockDuck.URLProtocolHandled"
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockURLProtocol.swift:13:7: warning: 'Sendable' class 'MockURLProtocol' cannot inherit from another class other than 'NSObject'; this is an error in the Swift 6 language mode
11 | /// This is the URLProtocol subclass that intercepts all network requests and uses `MockSession` to
12 | /// stub out the responses. One of these is instantiated per request.
13 | class MockURLProtocol: URLProtocol, URLSessionDelegate, URLSessionDataDelegate {
   |       `- warning: 'Sendable' class 'MockURLProtocol' cannot inherit from another class other than 'NSObject'; this is an error in the Swift 6 language mode
14 |     private struct Constants {
15 |         static let ProtocolHandled = "com.buzzfeed.MockDuck.URLProtocolHandled"
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockURLProtocol.swift:18:9: warning: stored property 'sessionTask' of 'Sendable'-conforming class 'MockURLProtocol' is mutable; this is an error in the Swift 6 language mode
16 |     }
17 |
18 |     var sessionTask: URLSessionTask?
   |         `- warning: stored property 'sessionTask' of 'Sendable'-conforming class 'MockURLProtocol' is mutable; this is an error in the Swift 6 language mode
19 |
20 |     override init(request: URLRequest, cachedResponse: CachedURLResponse?, client: URLProtocolClient?) {
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:52:23: warning: static property 'enabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 50 |     /// `loadingURL`, `recordingURL`, or by registering a request mock. This is here, however, to allow
 51 |     /// developers to quickly disable MockDuck by setting this to `false`.
 52 |     public static var enabled = true {
    |                       |- warning: static property 'enabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'enabled' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'enabled' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 53 |         willSet {
 54 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:149:38: warning: static property 'mockSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
147 |
148 |     // This is the URLSession subclass that we use to handle all mocked network requests.
149 |     internal private(set) static var mockSession = MockSession()
    |                                      |- warning: static property 'mockSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'mockSession' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'mockSession' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
150 |
151 |     /// This is the object responsible for loading cached requests from disks as well as recording
[4/14] Compiling MockDuck MockResponse.swift
[5/14] Compiling MockDuck MockSession.swift
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockSession.swift:13:13: warning: class 'MockSession' must restate inherited '@unchecked Sendable' conformance
11 | /// MockSession is a basic subclass of URLSession, created so that we can hook into the creation of
12 | /// NSURLSession tasks and provide our own tasks that can load cached requests from disk.
13 | final class MockSession: URLSession {
   |             `- warning: class 'MockSession' must restate inherited '@unchecked Sendable' conformance
14 |     private let queue = DispatchQueue(label: "com.buzzfeed.MockDuck.MockSessionQueue", attributes: [])
15 |
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockSession.swift:23:17: warning: capture of 'completionHandler' with non-sendable type '(Data?, URLResponse?, (any Error)?) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
21 |         let task = MockDataTask(request: request) { (sequence, error) in
22 |             self.queue.async {
23 |                 completionHandler(sequence?.responseData, sequence?.response, error)
   |                 |- warning: capture of 'completionHandler' with non-sendable type '(Data?, URLResponse?, (any Error)?) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
   |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
24 |             }
25 |         }
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockSession.swift:23:35: warning: capture of 'sequence' with non-sendable type 'MockRequestResponse?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
21 |         let task = MockDataTask(request: request) { (sequence, error) in
22 |             self.queue.async {
23 |                 completionHandler(sequence?.responseData, sequence?.response, error)
   |                                   `- warning: capture of 'sequence' with non-sendable type 'MockRequestResponse?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
24 |             }
25 |         }
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockRequestResponse.swift:12:13: note: class 'MockRequestResponse' does not conform to the 'Sendable' protocol
 10 |
 11 | /// A basic container for holding a request, a response, and any associated data.
 12 | final class MockRequestResponse: Codable {
    |             `- note: class 'MockRequestResponse' does not conform to the 'Sendable' protocol
 13 |
 14 |     enum MockFileTarget {
[6/14] Compiling MockDuck CryptoUtils.swift
[7/14] Compiling MockDuck RequestResponseCommonProtocol.swift
[8/14] Compiling MockDuck MockRequestResponse.swift
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:43:28: warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 41 |
 42 |     /// A delegate that allows a class to hook into and modify how MockDuck behaves.
 43 |     public static weak var delegate: MockDuckDelegate? {
    |                            |- warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: convert 'delegate' to a 'let' constant to make 'Sendable' shared state immutable
    |                            |- note: annotate 'delegate' with '@MainActor' if property should only be accessed from the main actor
    |                            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 44 |         willSet {
 45 |             checkConfigureMockDuck()
[9/14] Compiling MockDuck MockDuck.swift
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:13:35: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 11 |
 12 | /// A delegate protocol that can be used to modify how MockDuck functions.
 13 | public protocol MockDuckDelegate: class {
    |                                   `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 14 |
 15 |     /// A hook that allows one to normalize a request before it is turned into a hash that uniquely
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:43:28: warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 41 |
 42 |     /// A delegate that allows a class to hook into and modify how MockDuck behaves.
 43 |     public static weak var delegate: MockDuckDelegate? {
    |                            |- warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: convert 'delegate' to a 'let' constant to make 'Sendable' shared state immutable
    |                            |- note: annotate 'delegate' with '@MainActor' if property should only be accessed from the main actor
    |                            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 44 |         willSet {
 45 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:52:23: warning: static property 'enabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 50 |     /// `loadingURL`, `recordingURL`, or by registering a request mock. This is here, however, to allow
 51 |     /// developers to quickly disable MockDuck by setting this to `false`.
 52 |     public static var enabled = true {
    |                       |- warning: static property 'enabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'enabled' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'enabled' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 53 |         willSet {
 54 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:62:23: warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 60 |     /// Set this to `false` to force an error that resembles what `URLSession` provides when the
 61 |     /// network is unreachable.
 62 |     public static var shouldFallbackToNetwork = true {
    |                       |- warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'shouldFallbackToNetwork' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'shouldFallbackToNetwork' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 63 |         willSet {
 64 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:71:23: warning: static property 'fallbackSessionConfiguration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 69 |     /// configured with this object. You can hook in here to modify how these fallback requests
 70 |     /// are made.
 71 |     public static var fallbackSessionConfiguration = URLSessionConfiguration.default {
    |                       |- warning: static property 'fallbackSessionConfiguration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'fallbackSessionConfiguration' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'fallbackSessionConfiguration' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 72 |         willSet {
 73 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:146:38: warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
144 |     /// This is the session MockDuck will fallback to using if the mocked request is not found and
145 |     /// if `MockDuck.shouldFallbackToNetwork` is `true`.
146 |     internal private(set) static var fallbackSession = URLSession.shared
    |                                      |- warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'fallbackSession' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'fallbackSession' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
147 |
148 |     // This is the URLSession subclass that we use to handle all mocked network requests.
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:82:23: warning: static property 'loadingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 80 |     /// The location where MockDuck will attempt to look for network requests that have been saved
 81 |     /// to disk.
 82 |     public static var loadingURL: URL? {
    |                       |- warning: static property 'loadingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'loadingURL' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'loadingURL' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 83 |         willSet {
 84 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:153:38: warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
151 |     /// This is the object responsible for loading cached requests from disks as well as recording
152 |     /// new requests to disk.
153 |     internal private(set) static var mockBundle = MockBundle()
    |                                      |- warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'mockBundle' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'mockBundle' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
154 |
155 |     // MARK: - Private Configuration
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:100:23: warning: static property 'recordingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 98 |     /// useful way to record a session of network activity to disk which is then used in the future
 99 |     /// by pointing to this same data using `loadingURL`.
100 |     public static var recordingURL: URL? {
    |                       |- warning: static property 'recordingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'recordingURL' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'recordingURL' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |         willSet {
102 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:149:38: warning: static property 'mockSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
147 |
148 |     // This is the URLSession subclass that we use to handle all mocked network requests.
149 |     internal private(set) static var mockSession = MockSession()
    |                                      |- warning: static property 'mockSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'mockSession' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'mockSession' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
150 |
151 |     /// This is the object responsible for loading cached requests from disks as well as recording
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:157:24: warning: static property 'isConfigured' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
155 |     // MARK: - Private Configuration
156 |
157 |     private static var isConfigured = false
    |                        |- warning: static property 'isConfigured' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isConfigured' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: annotate 'isConfigured' with '@MainActor' if property should only be accessed from the main actor
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
158 |
159 |     private static func checkConfigureMockDuck() {
[10/14] Compiling MockDuck MockRequest.swift
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:43:28: warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 41 |
 42 |     /// A delegate that allows a class to hook into and modify how MockDuck behaves.
 43 |     public static weak var delegate: MockDuckDelegate? {
    |                            |- warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: convert 'delegate' to a 'let' constant to make 'Sendable' shared state immutable
    |                            |- note: annotate 'delegate' with '@MainActor' if property should only be accessed from the main actor
    |                            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 44 |         willSet {
 45 |             checkConfigureMockDuck()
[11/14] Compiling MockDuck MockBundle.swift
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDataTask.swift:14:13: warning: class 'MockDataTask' must restate inherited '@unchecked Sendable' conformance
12 | /// possible. When it is unable to load a response from disk, it can optionally use a fallback
13 | /// URLSession to handle the request normally.
14 | final class MockDataTask: URLSessionDataTask {
   |             `- warning: class 'MockDataTask' must restate inherited '@unchecked Sendable' conformance
15 |
16 |     typealias TaskCompletion = (MockRequestResponse?, Error?) -> Void
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:153:38: warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
151 |     /// This is the object responsible for loading cached requests from disks as well as recording
152 |     /// new requests to disk.
153 |     internal private(set) static var mockBundle = MockBundle()
    |                                      |- warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'mockBundle' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'mockBundle' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
154 |
155 |     // MARK: - Private Configuration
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:62:23: warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 60 |     /// Set this to `false` to force an error that resembles what `URLSession` provides when the
 61 |     /// network is unreachable.
 62 |     public static var shouldFallbackToNetwork = true {
    |                       |- warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'shouldFallbackToNetwork' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'shouldFallbackToNetwork' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 63 |         willSet {
 64 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:146:38: warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
144 |     /// This is the session MockDuck will fallback to using if the mocked request is not found and
145 |     /// if `MockDuck.shouldFallbackToNetwork` is `true`.
146 |     internal private(set) static var fallbackSession = URLSession.shared
    |                                      |- warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'fallbackSession' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'fallbackSession' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
147 |
148 |     // This is the URLSession subclass that we use to handle all mocked network requests.
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDataTask.swift:47:21: warning: capture of 'mockRequestResponse' with non-sendable type 'MockRequestResponse' in a `@Sendable` closure; this is an error in the Swift 6 language mode
45 |                     self.completion(nil, error)
46 |                 } else if let response = response {
47 |                     mockRequestResponse.responseWrapper = MockResponse(response: response, responseData: responseData)
   |                     `- warning: capture of 'mockRequestResponse' with non-sendable type 'MockRequestResponse' in a `@Sendable` closure; this is an error in the Swift 6 language mode
48 |                     MockDuck.mockBundle.record(requestResponse: mockRequestResponse)
49 |                     self.completion(mockRequestResponse, nil)
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockRequestResponse.swift:12:13: note: class 'MockRequestResponse' does not conform to the 'Sendable' protocol
 10 |
 11 | /// A basic container for holding a request, a response, and any associated data.
 12 | final class MockRequestResponse: Codable {
    |             `- note: class 'MockRequestResponse' does not conform to the 'Sendable' protocol
 13 |
 14 |     enum MockFileTarget {
[12/14] Compiling MockDuck MockDataTask.swift
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDataTask.swift:14:13: warning: class 'MockDataTask' must restate inherited '@unchecked Sendable' conformance
12 | /// possible. When it is unable to load a response from disk, it can optionally use a fallback
13 | /// URLSession to handle the request normally.
14 | final class MockDataTask: URLSessionDataTask {
   |             `- warning: class 'MockDataTask' must restate inherited '@unchecked Sendable' conformance
15 |
16 |     typealias TaskCompletion = (MockRequestResponse?, Error?) -> Void
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:153:38: warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
151 |     /// This is the object responsible for loading cached requests from disks as well as recording
152 |     /// new requests to disk.
153 |     internal private(set) static var mockBundle = MockBundle()
    |                                      |- warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'mockBundle' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'mockBundle' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
154 |
155 |     // MARK: - Private Configuration
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:62:23: warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 60 |     /// Set this to `false` to force an error that resembles what `URLSession` provides when the
 61 |     /// network is unreachable.
 62 |     public static var shouldFallbackToNetwork = true {
    |                       |- warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'shouldFallbackToNetwork' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'shouldFallbackToNetwork' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 63 |         willSet {
 64 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:146:38: warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
144 |     /// This is the session MockDuck will fallback to using if the mocked request is not found and
145 |     /// if `MockDuck.shouldFallbackToNetwork` is `true`.
146 |     internal private(set) static var fallbackSession = URLSession.shared
    |                                      |- warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'fallbackSession' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'fallbackSession' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
147 |
148 |     // This is the URLSession subclass that we use to handle all mocked network requests.
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDataTask.swift:47:21: warning: capture of 'mockRequestResponse' with non-sendable type 'MockRequestResponse' in a `@Sendable` closure; this is an error in the Swift 6 language mode
45 |                     self.completion(nil, error)
46 |                 } else if let response = response {
47 |                     mockRequestResponse.responseWrapper = MockResponse(response: response, responseData: responseData)
   |                     `- warning: capture of 'mockRequestResponse' with non-sendable type 'MockRequestResponse' in a `@Sendable` closure; this is an error in the Swift 6 language mode
48 |                     MockDuck.mockBundle.record(requestResponse: mockRequestResponse)
49 |                     self.completion(mockRequestResponse, nil)
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockRequestResponse.swift:12:13: note: class 'MockRequestResponse' does not conform to the 'Sendable' protocol
 10 |
 11 | /// A basic container for holding a request, a response, and any associated data.
 12 | final class MockRequestResponse: Codable {
    |             `- note: class 'MockRequestResponse' does not conform to the 'Sendable' protocol
 13 |
 14 |     enum MockFileTarget {
[13/14] Emitting module MockDuck
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDataTask.swift:14:13: warning: class 'MockDataTask' must restate inherited '@unchecked Sendable' conformance
12 | /// possible. When it is unable to load a response from disk, it can optionally use a fallback
13 | /// URLSession to handle the request normally.
14 | final class MockDataTask: URLSessionDataTask {
   |             `- warning: class 'MockDataTask' must restate inherited '@unchecked Sendable' conformance
15 |
16 |     typealias TaskCompletion = (MockRequestResponse?, Error?) -> Void
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:13:35: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 11 |
 12 | /// A delegate protocol that can be used to modify how MockDuck functions.
 13 | public protocol MockDuckDelegate: class {
    |                                   `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 14 |
 15 |     /// A hook that allows one to normalize a request before it is turned into a hash that uniquely
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:43:28: warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 41 |
 42 |     /// A delegate that allows a class to hook into and modify how MockDuck behaves.
 43 |     public static weak var delegate: MockDuckDelegate? {
    |                            |- warning: static property 'delegate' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: convert 'delegate' to a 'let' constant to make 'Sendable' shared state immutable
    |                            |- note: annotate 'delegate' with '@MainActor' if property should only be accessed from the main actor
    |                            `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 44 |         willSet {
 45 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:52:23: warning: static property 'enabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 50 |     /// `loadingURL`, `recordingURL`, or by registering a request mock. This is here, however, to allow
 51 |     /// developers to quickly disable MockDuck by setting this to `false`.
 52 |     public static var enabled = true {
    |                       |- warning: static property 'enabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'enabled' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'enabled' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 53 |         willSet {
 54 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:62:23: warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 60 |     /// Set this to `false` to force an error that resembles what `URLSession` provides when the
 61 |     /// network is unreachable.
 62 |     public static var shouldFallbackToNetwork = true {
    |                       |- warning: static property 'shouldFallbackToNetwork' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'shouldFallbackToNetwork' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'shouldFallbackToNetwork' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 63 |         willSet {
 64 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:71:23: warning: static property 'fallbackSessionConfiguration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 69 |     /// configured with this object. You can hook in here to modify how these fallback requests
 70 |     /// are made.
 71 |     public static var fallbackSessionConfiguration = URLSessionConfiguration.default {
    |                       |- warning: static property 'fallbackSessionConfiguration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'fallbackSessionConfiguration' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'fallbackSessionConfiguration' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 72 |         willSet {
 73 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:146:38: warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
144 |     /// This is the session MockDuck will fallback to using if the mocked request is not found and
145 |     /// if `MockDuck.shouldFallbackToNetwork` is `true`.
146 |     internal private(set) static var fallbackSession = URLSession.shared
    |                                      |- warning: static property 'fallbackSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'fallbackSession' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'fallbackSession' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
147 |
148 |     // This is the URLSession subclass that we use to handle all mocked network requests.
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:82:23: warning: static property 'loadingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 80 |     /// The location where MockDuck will attempt to look for network requests that have been saved
 81 |     /// to disk.
 82 |     public static var loadingURL: URL? {
    |                       |- warning: static property 'loadingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'loadingURL' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'loadingURL' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 83 |         willSet {
 84 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:153:38: warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
151 |     /// This is the object responsible for loading cached requests from disks as well as recording
152 |     /// new requests to disk.
153 |     internal private(set) static var mockBundle = MockBundle()
    |                                      |- warning: static property 'mockBundle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'mockBundle' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'mockBundle' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
154 |
155 |     // MARK: - Private Configuration
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:100:23: warning: static property 'recordingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 98 |     /// useful way to record a session of network activity to disk which is then used in the future
 99 |     /// by pointing to this same data using `loadingURL`.
100 |     public static var recordingURL: URL? {
    |                       |- warning: static property 'recordingURL' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'recordingURL' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'recordingURL' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |         willSet {
102 |             checkConfigureMockDuck()
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:149:38: warning: static property 'mockSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
147 |
148 |     // This is the URLSession subclass that we use to handle all mocked network requests.
149 |     internal private(set) static var mockSession = MockSession()
    |                                      |- warning: static property 'mockSession' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                                      |- note: convert 'mockSession' to a 'let' constant to make 'Sendable' shared state immutable
    |                                      |- note: annotate 'mockSession' with '@MainActor' if property should only be accessed from the main actor
    |                                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
150 |
151 |     /// This is the object responsible for loading cached requests from disks as well as recording
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockDuck.swift:157:24: warning: static property 'isConfigured' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
155 |     // MARK: - Private Configuration
156 |
157 |     private static var isConfigured = false
    |                        |- warning: static property 'isConfigured' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isConfigured' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: annotate 'isConfigured' with '@MainActor' if property should only be accessed from the main actor
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
158 |
159 |     private static func checkConfigureMockDuck() {
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockSession.swift:13:13: warning: class 'MockSession' must restate inherited '@unchecked Sendable' conformance
11 | /// MockSession is a basic subclass of URLSession, created so that we can hook into the creation of
12 | /// NSURLSession tasks and provide our own tasks that can load cached requests from disk.
13 | final class MockSession: URLSession {
   |             `- warning: class 'MockSession' must restate inherited '@unchecked Sendable' conformance
14 |     private let queue = DispatchQueue(label: "com.buzzfeed.MockDuck.MockSessionQueue", attributes: [])
15 |
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockURLProtocol.swift:13:7: warning: non-final class 'MockURLProtocol' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
11 | /// This is the URLProtocol subclass that intercepts all network requests and uses `MockSession` to
12 | /// stub out the responses. One of these is instantiated per request.
13 | class MockURLProtocol: URLProtocol, URLSessionDelegate, URLSessionDataDelegate {
   |       `- warning: non-final class 'MockURLProtocol' cannot conform to 'Sendable'; use '@unchecked Sendable'; this is an error in the Swift 6 language mode
14 |     private struct Constants {
15 |         static let ProtocolHandled = "com.buzzfeed.MockDuck.URLProtocolHandled"
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockURLProtocol.swift:13:7: warning: 'Sendable' class 'MockURLProtocol' cannot inherit from another class other than 'NSObject'; this is an error in the Swift 6 language mode
11 | /// This is the URLProtocol subclass that intercepts all network requests and uses `MockSession` to
12 | /// stub out the responses. One of these is instantiated per request.
13 | class MockURLProtocol: URLProtocol, URLSessionDelegate, URLSessionDataDelegate {
   |       `- warning: 'Sendable' class 'MockURLProtocol' cannot inherit from another class other than 'NSObject'; this is an error in the Swift 6 language mode
14 |     private struct Constants {
15 |         static let ProtocolHandled = "com.buzzfeed.MockDuck.URLProtocolHandled"
/Users/admin/builder/spi-builder-workspace/MockDuck/Sources/MockURLProtocol.swift:18:9: warning: stored property 'sessionTask' of 'Sendable'-conforming class 'MockURLProtocol' is mutable; this is an error in the Swift 6 language mode
16 |     }
17 |
18 |     var sessionTask: URLSessionTask?
   |         `- warning: stored property 'sessionTask' of 'Sendable'-conforming class 'MockURLProtocol' is mutable; this is an error in the Swift 6 language mode
19 |
20 |     override init(request: URLRequest, cachedResponse: CachedURLResponse?, client: URLProtocolClient?) {
[14/14] Compiling MockDuck EncodingUtils.swift
Build complete! (14.96s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MockDuck",
  "name" : "MockDuck",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.12"
    },
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    }
  ],
  "products" : [
    {
      "name" : "MockDuck",
      "targets" : [
        "MockDuck"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MockDuckTests",
      "module_type" : "SwiftTarget",
      "name" : "MockDuckTests",
      "path" : "MockDuckTests/Sources",
      "sources" : [
        "CryptoTests.swift",
        "MockBundleTests.swift",
        "MockDuckTests.swift",
        "MockURLProtocolTests.swift",
        "RequestHandlerTests.swift",
        "RequestHashTests.swift"
      ],
      "target_dependencies" : [
        "MockDuck"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MockDuck",
      "module_type" : "SwiftTarget",
      "name" : "MockDuck",
      "path" : "MockDuck/Sources",
      "product_memberships" : [
        "MockDuck"
      ],
      "sources" : [
        "MockBundle.swift",
        "MockDataTask.swift",
        "MockDuck.swift",
        "MockRequest.swift",
        "MockRequestResponse.swift",
        "MockResponse.swift",
        "MockSession.swift",
        "MockURLProtocol.swift",
        "RequestResponseCommonProtocol.swift",
        "Utilities/CryptoUtils.swift",
        "Utilities/EncodingUtils.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.