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Build Information

Successful build of AmplitudeCore, reference main (84af94), with Swift 6.1 for macOS (SPM) on 2 Apr 2026 21:36:21 UTC.

Swift 6 data race errors: 12

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/amplitude/AmplitudeCore-Swift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/amplitude/AmplitudeCore-Swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 84af94e chore: SECENG-7706 [security] Pin versions of GitHub Actions to full commit hash (#77)
Cloned https://github.com/amplitude/AmplitudeCore-Swift.git
Revision (git rev-parse @):
84af94e9747b8c8abafc3b3fb5c30e2c2f7c078d
SUCCESS checkout https://github.com/amplitude/AmplitudeCore-Swift.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/amplitude/AmplitudeCore-Swift.git
https://github.com/amplitude/AmplitudeCore-Swift.git
{
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  "manifest_display_name" : "AmplitudeCore",
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  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
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      "name" : "macos",
      "version" : "10.13"
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    },
    {
      "name" : "AmplitudeCoreNoUIKit",
      "targets" : [
        "AmplitudeCoreNoUIKit"
      ],
      "type" : {
        "library" : [
          "automatic"
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    },
    {
      "name" : "AmplitudeCoreFramework",
      "targets" : [
        "AmplitudeCoreFramework"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "AmplitudeCoreNoUIKitFramework",
      "targets" : [
        "AmplitudeCoreNoUIKitFramework"
      ],
      "type" : {
        "library" : [
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  "targets" : [
    {
      "c99name" : "AmplitudeCoreTests",
      "module_type" : "SwiftTarget",
      "name" : "AmplitudeCoreTests",
      "path" : "Tests/AmplitudeCoreTests",
      "sources" : [
        "DiagnosticsClientTests.swift",
        "DiagnosticsRemoteConfigTests.swift",
        "DiagnosticsStorageTests.swift",
        "RemoteConfigTests.swift",
        "SampleTests.swift",
        "StringExtensionTests.swift"
      ],
      "target_dependencies" : [
        "AmplitudeCore"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AmplitudeCoreNoUIKitFramework",
      "module_type" : "BinaryTarget",
      "name" : "AmplitudeCoreNoUIKitFramework",
      "path" : "remote/archive/AmplitudeCoreNoUIKit.zip",
      "product_memberships" : [
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      "sources" : [
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      "type" : "binary"
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      "c99name" : "AmplitudeCoreNoUIKit",
      "module_type" : "SwiftTarget",
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      "path" : "Sources/AmplitudeCoreNoUIKit",
      "product_memberships" : [
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      "resources" : [
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          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/PrivacyInfo.xcprivacy",
          "rule" : {
            "process" : {
            }
          }
        }
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      "sources" : [
        "Constants.swift",
        "Context/AmplitudeContext.swift",
        "Device/CoreDevice.swift",
        "Diagnostics/CoreDiagnostics.swift",
        "Diagnostics/DiagnosticsClient.swift",
        "Diagnostics/DiagnosticsStorage.swift",
        "Functionalities/InterfaceSignal.swift",
        "Logger/CoreLogger.swift",
        "Logger/OSLogger.swift",
        "Plugins/AnalyticsClient.swift",
        "Plugins/AnalyticsEvent.swift",
        "Plugins/AnalyticsIdentity.swift",
        "Plugins/PluginHost.swift",
        "Plugins/UniversalPlugin.swift",
        "Remote Config/RemoteConfigClient.swift",
        "Types/ServerZone.swift",
        "Utilities/CrashCatcher.swift",
        "Utilities/HttpUtil.swift",
        "Utilities/JSONValue.swift",
        "Utilities/Sample.swift",
        "Utilities/StringExtension.swift"
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      "c99name" : "AmplitudeCoreFramework",
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      "c99name" : "AmplitudeCore",
      "module_type" : "SwiftTarget",
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      "path" : "Sources/AmplitudeCore",
      "product_memberships" : [
        "AmplitudeCore"
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      "resources" : [
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          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/PrivacyInfo.xcprivacy",
          "rule" : {
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      ],
      "sources" : [
        "Constants.swift",
        "Context/AmplitudeContext.swift",
        "Device/CoreDevice.swift",
        "Diagnostics/CoreDiagnostics.swift",
        "Diagnostics/DiagnosticsClient.swift",
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        "Functionalities/InterfaceSignal.swift",
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        "Logger/OSLogger.swift",
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warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package@swift-5.9.swift:9:15: warning: 'v11' is deprecated: iOS 12.0 is the oldest supported version
 7 |     platforms: [
 8 |         .macOS(.v10_13),
 9 |         .iOS(.v11),
   |               `- warning: 'v11' is deprecated: iOS 12.0 is the oldest supported version
10 |         .tvOS(.v11),
11 |         .watchOS(.v4),
/Users/admin/builder/spi-builder-workspace/Package@swift-5.9.swift:10:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
 8 |         .macOS(.v10_13),
 9 |         .iOS(.v11),
10 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
11 |         .watchOS(.v4),
12 |         .visionOS(.v1),
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/5] Write sources
[0/5] Copying PrivacyInfo.xcprivacy
[4/5] Write swift-version-2F0A5646E1D333AE.txt
[6/47] Emitting module AmplitudeCore
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:21:24: warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
    |                        |- warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousSignalHandlers' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousSignalHandlers' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:22:24: warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
 22 |     private static var isRegistered = false
    |                        |- warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isRegistered' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'isRegistered' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:24:24: warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
    |                        |- warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousCrashState' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousCrashState' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |
 26 |     // Pre-allocated for signal-safe access
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:27:24: warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 25 |
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
    |                        |- warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathBuffer' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathBuffer' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 |     private static var crashFilePathLength: Int = 0
 29 |
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:28:24: warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
 28 |     private static var crashFilePathLength: Int = 0
    |                        |- warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathLength' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 29 |
 30 |     private typealias SwiftDemangleFunc = @convention(c) (
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:34:24: warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 32 |     ) -> UnsafeMutablePointer<CChar>?
 33 |
 34 |     private static var swiftDemangle: SwiftDemangleFunc? = {
    |                        |- warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'swiftDemangle' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'swiftDemangle' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 35 |         guard let handle = dlopen(nil, RTLD_NOW),
 36 |               let sym = dlsym(handle, "swift_demangle") else { return nil }
[7/49] Emitting module AmplitudeCoreNoUIKit
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:21:24: warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
    |                        |- warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousSignalHandlers' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousSignalHandlers' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:22:24: warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
 22 |     private static var isRegistered = false
    |                        |- warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isRegistered' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'isRegistered' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:24:24: warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
    |                        |- warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousCrashState' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousCrashState' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |
 26 |     // Pre-allocated for signal-safe access
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:27:24: warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 25 |
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
    |                        |- warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathBuffer' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathBuffer' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 |     private static var crashFilePathLength: Int = 0
 29 |
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:28:24: warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
 28 |     private static var crashFilePathLength: Int = 0
    |                        |- warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathLength' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 29 |
 30 |     private typealias SwiftDemangleFunc = @convention(c) (
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:34:24: warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 32 |     ) -> UnsafeMutablePointer<CChar>?
 33 |
 34 |     private static var swiftDemangle: SwiftDemangleFunc? = {
    |                        |- warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'swiftDemangle' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'swiftDemangle' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 35 |         guard let handle = dlopen(nil, RTLD_NOW),
 36 |               let sym = dlsym(handle, "swift_demangle") else { return nil }
[8/51] Compiling AmplitudeCoreNoUIKit StringExtension.swift
[9/51] Compiling AmplitudeCoreNoUIKit resource_bundle_accessor.swift
[10/51] Compiling AmplitudeCoreNoUIKit AnalyticsEvent.swift
[11/51] Compiling AmplitudeCoreNoUIKit AnalyticsIdentity.swift
[12/51] Compiling AmplitudeCoreNoUIKit CrashCatcher.swift
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:21:24: warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
    |                        |- warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousSignalHandlers' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousSignalHandlers' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:22:24: warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
 22 |     private static var isRegistered = false
    |                        |- warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isRegistered' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'isRegistered' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:24:24: warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
    |                        |- warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousCrashState' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousCrashState' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |
 26 |     // Pre-allocated for signal-safe access
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:27:24: warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 25 |
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
    |                        |- warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathBuffer' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathBuffer' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 |     private static var crashFilePathLength: Int = 0
 29 |
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:28:24: warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
 28 |     private static var crashFilePathLength: Int = 0
    |                        |- warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathLength' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 29 |
 30 |     private typealias SwiftDemangleFunc = @convention(c) (
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:34:24: warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 32 |     ) -> UnsafeMutablePointer<CChar>?
 33 |
 34 |     private static var swiftDemangle: SwiftDemangleFunc? = {
    |                        |- warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'swiftDemangle' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'swiftDemangle' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 35 |         guard let handle = dlopen(nil, RTLD_NOW),
 36 |               let sym = dlsym(handle, "swift_demangle") else { return nil }
[13/51] Compiling AmplitudeCoreNoUIKit HttpUtil.swift
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:21:24: warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
    |                        |- warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousSignalHandlers' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousSignalHandlers' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:22:24: warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
 22 |     private static var isRegistered = false
    |                        |- warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isRegistered' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'isRegistered' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:24:24: warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
    |                        |- warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousCrashState' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousCrashState' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |
 26 |     // Pre-allocated for signal-safe access
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:27:24: warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 25 |
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
    |                        |- warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathBuffer' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathBuffer' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 |     private static var crashFilePathLength: Int = 0
 29 |
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:28:24: warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
 28 |     private static var crashFilePathLength: Int = 0
    |                        |- warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathLength' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 29 |
 30 |     private typealias SwiftDemangleFunc = @convention(c) (
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Utilities/CrashCatcher.swift:34:24: warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 32 |     ) -> UnsafeMutablePointer<CChar>?
 33 |
 34 |     private static var swiftDemangle: SwiftDemangleFunc? = {
    |                        |- warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'swiftDemangle' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'swiftDemangle' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 35 |         guard let handle = dlopen(nil, RTLD_NOW),
 36 |               let sym = dlsym(handle, "swift_demangle") else { return nil }
[14/51] Compiling AmplitudeCore CoreDiagnostics.swift
[15/51] Compiling AmplitudeCore DiagnosticsClient.swift
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:285:44: warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
 53 |     }
 54 |
 55 |     private class CallbackInfo {
    |                   `- note: class 'CallbackInfo' does not conform to the 'Sendable' protocol
 56 |         let id: UUID
 57 |         let key: String?
    :
283 |             }
284 |             if let updatedRemoteConfig = try await self?._updateConfigs().value, let self {
285 |                 for callback in await self.callbacks {
    |                                            `- warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
286 |                     switch callback.deliveryMode {
287 |                     case .all:
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:176:23: warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
174 |         callbacks.append(callbackInfo)
175 |
176 |         Task.detached { [weak self, fetchLocalTask, fetchRemoteTask] in
    |                       `- warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
177 |             switch callbackInfo.deliveryMode {
    |                    `- note: closure captures 'callbackInfo' which is accessible to 'self'-isolated code
178 |             case .all:
179 |                 await withThrowingTaskGroup(of: (configInfo: RemoteConfigInfo, source: Source).self) { [fetchLocalTask, fetchRemoteTask] taskGroup in
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:225:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
223 |                     timeoutTask.cancel()
224 |                     if let self {
225 |                         await sendCallback(callbackInfo, configInfo: remoteConfig, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
226 |                     }
227 |                 } catch {
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:233:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
231 |                     // timeout or remote fetch error, try storage
232 |                     if let localConfig = try? await fetchLocalTask.value {
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:235:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
236 |                     }
237 |                 }
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:193:41: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
191 |                             didSendCallback = true
192 |
193 |                             await self?.sendCallback(callbackInfo, configInfo: result.configInfo, source: result.source)
    |                                         |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                         `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
194 |
195 |                             // no need to send local callbacks if we already have remote
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:206:33: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
204 |                     }
205 |
206 |                     await self?.sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                                 |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                 `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
207 |                 }
208 |             case .waitForRemote(timeout: let timeout):
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:296:32: warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
294 |                     }
295 |
296 |                     await self.sendCallback(callback, configInfo: updatedRemoteConfig, source: .remote)
    |                                |- warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
    |                                |- note: sending 'self'-isolated 'callback' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and local nonisolated uses
    |                                `- note: access can happen concurrently
297 |                 }
298 |             }
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:285:44: warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
 53 |     }
 54 |
 55 |     private class CallbackInfo {
    |                   `- note: class 'CallbackInfo' does not conform to the 'Sendable' protocol
 56 |         let id: UUID
 57 |         let key: String?
    :
283 |             }
284 |             if let updatedRemoteConfig = try await self?._updateConfigs().value, let self {
285 |                 for callback in await self.callbacks {
    |                                            `- warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
286 |                     switch callback.deliveryMode {
287 |                     case .all:
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:176:23: warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
174 |         callbacks.append(callbackInfo)
175 |
176 |         Task.detached { [weak self, fetchLocalTask, fetchRemoteTask] in
    |                       `- warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
177 |             switch callbackInfo.deliveryMode {
    |                    `- note: closure captures 'callbackInfo' which is accessible to 'self'-isolated code
178 |             case .all:
179 |                 await withThrowingTaskGroup(of: (configInfo: RemoteConfigInfo, source: Source).self) { [fetchLocalTask, fetchRemoteTask] taskGroup in
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:225:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
223 |                     timeoutTask.cancel()
224 |                     if let self {
225 |                         await sendCallback(callbackInfo, configInfo: remoteConfig, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
226 |                     }
227 |                 } catch {
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:233:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
231 |                     // timeout or remote fetch error, try storage
232 |                     if let localConfig = try? await fetchLocalTask.value {
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:235:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
236 |                     }
237 |                 }
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:193:41: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
191 |                             didSendCallback = true
192 |
193 |                             await self?.sendCallback(callbackInfo, configInfo: result.configInfo, source: result.source)
    |                                         |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                         `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
194 |
195 |                             // no need to send local callbacks if we already have remote
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:206:33: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
204 |                     }
205 |
206 |                     await self?.sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                                 |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                 `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
207 |                 }
208 |             case .waitForRemote(timeout: let timeout):
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Remote Config/RemoteConfigClient.swift:296:32: warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
294 |                     }
295 |
296 |                     await self.sendCallback(callback, configInfo: updatedRemoteConfig, source: .remote)
    |                                |- warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
    |                                |- note: sending 'self'-isolated 'callback' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and local nonisolated uses
    |                                `- note: access can happen concurrently
297 |                 }
298 |             }
[22/51] Compiling AmplitudeCoreNoUIKit InterfaceSignal.swift
[23/51] Compiling AmplitudeCoreNoUIKit CoreLogger.swift
[24/51] Compiling AmplitudeCoreNoUIKit DiagnosticsClient.swift
[25/51] Compiling AmplitudeCoreNoUIKit DiagnosticsStorage.swift
[26/51] Compiling AmplitudeCore CrashCatcher.swift
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:21:24: warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
    |                        |- warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousSignalHandlers' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousSignalHandlers' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:22:24: warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
 22 |     private static var isRegistered = false
    |                        |- warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isRegistered' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'isRegistered' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:24:24: warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
    |                        |- warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousCrashState' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousCrashState' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |
 26 |     // Pre-allocated for signal-safe access
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:27:24: warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 25 |
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
    |                        |- warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathBuffer' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathBuffer' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 |     private static var crashFilePathLength: Int = 0
 29 |
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:28:24: warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
 28 |     private static var crashFilePathLength: Int = 0
    |                        |- warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathLength' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 29 |
 30 |     private typealias SwiftDemangleFunc = @convention(c) (
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:34:24: warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 32 |     ) -> UnsafeMutablePointer<CChar>?
 33 |
 34 |     private static var swiftDemangle: SwiftDemangleFunc? = {
    |                        |- warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'swiftDemangle' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'swiftDemangle' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 35 |         guard let handle = dlopen(nil, RTLD_NOW),
 36 |               let sym = dlsym(handle, "swift_demangle") else { return nil }
[27/51] Compiling AmplitudeCore HttpUtil.swift
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:21:24: warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
    |                        |- warning: static property 'previousSignalHandlers' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousSignalHandlers' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousSignalHandlers' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:22:24: warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 20 |     private static let fatalSignals: [Int32] = [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP]
 21 |     private static var previousSignalHandlers: [Int32: sigaction] = [:]
 22 |     private static var isRegistered = false
    |                        |- warning: static property 'isRegistered' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'isRegistered' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'isRegistered' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:24:24: warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 22 |     private static var isRegistered = false
 23 |     private static let registrationLock = NSLock()
 24 |     private static var previousCrashState: PreviousCrashState = .notDetected
    |                        |- warning: static property 'previousCrashState' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'previousCrashState' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'previousCrashState' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |
 26 |     // Pre-allocated for signal-safe access
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:27:24: warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 25 |
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
    |                        |- warning: static property 'crashFilePathBuffer' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathBuffer' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathBuffer' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 |     private static var crashFilePathLength: Int = 0
 29 |
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:28:24: warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 26 |     // Pre-allocated for signal-safe access
 27 |     private static var crashFilePathBuffer: [CChar] = []
 28 |     private static var crashFilePathLength: Int = 0
    |                        |- warning: static property 'crashFilePathLength' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'crashFilePathLength' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'crashFilePathLength' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 29 |
 30 |     private typealias SwiftDemangleFunc = @convention(c) (
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCore/Utilities/CrashCatcher.swift:34:24: warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 32 |     ) -> UnsafeMutablePointer<CChar>?
 33 |
 34 |     private static var swiftDemangle: SwiftDemangleFunc? = {
    |                        |- warning: static property 'swiftDemangle' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'swiftDemangle' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'swiftDemangle' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 35 |         guard let handle = dlopen(nil, RTLD_NOW),
 36 |               let sym = dlsym(handle, "swift_demangle") else { return nil }
[28/51] Compiling AmplitudeCoreNoUIKit PluginHost.swift
[29/51] Compiling AmplitudeCoreNoUIKit UniversalPlugin.swift
[31/51] Compiling AmplitudeCoreNoUIKit CoreDiagnostics.swift
[35/51] Compiling AmplitudeCore JSONValue.swift
[36/51] Compiling AmplitudeCore Sample.swift
[37/51] Compiling AmplitudeCoreNoUIKit Constants.swift
[40/51] Compiling AmplitudeCoreNoUIKit AmplitudeContext.swift
[42/51] Compiling AmplitudeCoreNoUIKit CoreDevice.swift
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:285:44: warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
 53 |     }
 54 |
 55 |     private class CallbackInfo {
    |                   `- note: class 'CallbackInfo' does not conform to the 'Sendable' protocol
 56 |         let id: UUID
 57 |         let key: String?
    :
283 |             }
284 |             if let updatedRemoteConfig = try await self?._updateConfigs().value, let self {
285 |                 for callback in await self.callbacks {
    |                                            `- warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
286 |                     switch callback.deliveryMode {
287 |                     case .all:
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:176:23: warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
174 |         callbacks.append(callbackInfo)
175 |
176 |         Task.detached { [weak self, fetchLocalTask, fetchRemoteTask] in
    |                       `- warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
177 |             switch callbackInfo.deliveryMode {
    |                    `- note: closure captures 'callbackInfo' which is accessible to 'self'-isolated code
178 |             case .all:
179 |                 await withThrowingTaskGroup(of: (configInfo: RemoteConfigInfo, source: Source).self) { [fetchLocalTask, fetchRemoteTask] taskGroup in
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:225:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
223 |                     timeoutTask.cancel()
224 |                     if let self {
225 |                         await sendCallback(callbackInfo, configInfo: remoteConfig, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
226 |                     }
227 |                 } catch {
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:233:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
231 |                     // timeout or remote fetch error, try storage
232 |                     if let localConfig = try? await fetchLocalTask.value {
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:235:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
236 |                     }
237 |                 }
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:193:41: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
191 |                             didSendCallback = true
192 |
193 |                             await self?.sendCallback(callbackInfo, configInfo: result.configInfo, source: result.source)
    |                                         |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                         `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
194 |
195 |                             // no need to send local callbacks if we already have remote
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:206:33: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
204 |                     }
205 |
206 |                     await self?.sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                                 |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                 `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
207 |                 }
208 |             case .waitForRemote(timeout: let timeout):
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:296:32: warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
294 |                     }
295 |
296 |                     await self.sendCallback(callback, configInfo: updatedRemoteConfig, source: .remote)
    |                                |- warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
    |                                |- note: sending 'self'-isolated 'callback' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and local nonisolated uses
    |                                `- note: access can happen concurrently
297 |                 }
298 |             }
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:285:44: warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
 53 |     }
 54 |
 55 |     private class CallbackInfo {
    |                   `- note: class 'CallbackInfo' does not conform to the 'Sendable' protocol
 56 |         let id: UUID
 57 |         let key: String?
    :
283 |             }
284 |             if let updatedRemoteConfig = try await self?._updateConfigs().value, let self {
285 |                 for callback in await self.callbacks {
    |                                            `- warning: non-sendable type '[RemoteConfigClient.CallbackInfo]' of property 'callbacks' cannot exit actor-isolated context; this is an error in the Swift 6 language mode
286 |                     switch callback.deliveryMode {
287 |                     case .all:
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:176:23: warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
174 |         callbacks.append(callbackInfo)
175 |
176 |         Task.detached { [weak self, fetchLocalTask, fetchRemoteTask] in
    |                       `- warning: passing closure as a 'sending' parameter risks causing data races between 'self'-isolated code and concurrent execution of the closure; this is an error in the Swift 6 language mode
177 |             switch callbackInfo.deliveryMode {
    |                    `- note: closure captures 'callbackInfo' which is accessible to 'self'-isolated code
178 |             case .all:
179 |                 await withThrowingTaskGroup(of: (configInfo: RemoteConfigInfo, source: Source).self) { [fetchLocalTask, fetchRemoteTask] taskGroup in
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:225:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
223 |                     timeoutTask.cancel()
224 |                     if let self {
225 |                         await sendCallback(callbackInfo, configInfo: remoteConfig, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
226 |                     }
227 |                 } catch {
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:233:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
231 |                     // timeout or remote fetch error, try storage
232 |                     if let localConfig = try? await fetchLocalTask.value {
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:235:31: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
233 |                         await sendCallback(callbackInfo, configInfo: localConfig, source: .cache)
234 |                     } else {
235 |                         await sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                               |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                               `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
236 |                     }
237 |                 }
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:193:41: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
191 |                             didSendCallback = true
192 |
193 |                             await self?.sendCallback(callbackInfo, configInfo: result.configInfo, source: result.source)
    |                                         |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                         `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
194 |
195 |                             // no need to send local callbacks if we already have remote
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:206:33: warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
204 |                     }
205 |
206 |                     await self?.sendCallback(callbackInfo, configInfo: nil, source: .remote)
    |                                 |- warning: sending 'callbackInfo' risks causing data races; this is an error in the Swift 6 language mode
    |                                 `- note: sending task-isolated 'callbackInfo' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and task-isolated uses
207 |                 }
208 |             case .waitForRemote(timeout: let timeout):
/Users/admin/builder/spi-builder-workspace/Sources/AmplitudeCoreNoUIKit/Remote Config/RemoteConfigClient.swift:296:32: warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
294 |                     }
295 |
296 |                     await self.sendCallback(callback, configInfo: updatedRemoteConfig, source: .remote)
    |                                |- warning: sending 'callback' risks causing data races; this is an error in the Swift 6 language mode
    |                                |- note: sending 'self'-isolated 'callback' to actor-isolated instance method 'sendCallback(_:configInfo:source:)' risks causing data races between actor-isolated and local nonisolated uses
    |                                `- note: access can happen concurrently
297 |                 }
298 |             }
Build complete! (12.75s)
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package@swift-5.9.swift:9:15: warning: 'v11' is deprecated: iOS 12.0 is the oldest supported version
 7 |     platforms: [
 8 |         .macOS(.v10_13),
 9 |         .iOS(.v11),
   |               `- warning: 'v11' is deprecated: iOS 12.0 is the oldest supported version
10 |         .tvOS(.v11),
11 |         .watchOS(.v4),
/Users/admin/builder/spi-builder-workspace/Package@swift-5.9.swift:10:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
 8 |         .macOS(.v10_13),
 9 |         .iOS(.v11),
10 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
11 |         .watchOS(.v4),
12 |         .visionOS(.v1),
Downloading binary artifact https://github.com/amplitude/AmplitudeCore-Swift/releases/download/v1.4.5/AmplitudeCore.zip
Downloading binary artifact https://github.com/amplitude/AmplitudeCore-Swift/releases/download/v1.4.5/AmplitudeCoreNoUIKit.zip
[16375/16958154] Downloading https://github.com/amplitude/AmplitudeCore-Swift/releases/download/v1.4.5/AmplitudeCoreNoUIKit.zip
[9375867/36296088] Downloading https://github.com/amplitude/AmplitudeCore-Swift/releases/download/v1.4.5/AmplitudeCoreNoUIKit.zip, https://github.com/amplitude/AmplitudeCore-Swift/releases/download/v1.4.5/AmplitudeCore.zip
Downloaded https://github.com/amplitude/AmplitudeCore-Swift/releases/download/v1.4.5/AmplitudeCoreNoUIKit.zip (1.45s)
Downloaded https://github.com/amplitude/AmplitudeCore-Swift/releases/download/v1.4.5/AmplitudeCore.zip (1.78s)
Build complete.
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warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package@swift-5.9.swift:9:15: warning: 'v11' is deprecated: iOS 12.0 is the oldest supported version
 7 |     platforms: [
 8 |         .macOS(.v10_13),
 9 |         .iOS(.v11),
   |               `- warning: 'v11' is deprecated: iOS 12.0 is the oldest supported version
10 |         .tvOS(.v11),
11 |         .watchOS(.v4),
/Users/admin/builder/spi-builder-workspace/Package@swift-5.9.swift:10:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
 8 |         .macOS(.v10_13),
 9 |         .iOS(.v11),
10 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
11 |         .watchOS(.v4),
12 |         .visionOS(.v1),
Done.