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Build Information

Failed to build UnleashProxyClientSwift, reference 2.5.2 (033bf6), with Swift 6.1 for watchOS using Xcode 16.3 on 17 Aug 2026 15:59:15 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme UnleashProxyClientSwift -destination generic/platform=watchOS

Build Log

========================================
RunAll
========================================
Builder version: 5.0.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Unleash/unleash-ios-sdk.git
Reference: 2.5.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Unleash/unleash-ios-sdk
 * tag               2.5.2      -> FETCH_HEAD
HEAD is now at 033bf6d chore: release 2.5.2 (#147)
Cloned https://github.com/Unleash/unleash-ios-sdk.git
Revision (git rev-parse @):
033bf6dbf5e1605f4839198a3173e77c91360d8b
SUCCESS checkout https://github.com/Unleash/unleash-ios-sdk.git at 2.5.2
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/Unleash/unleash-ios-sdk.git
https://github.com/Unleash/unleash-ios-sdk.git
{
  "dependencies" : [
    {
      "identity" : "swifteventbus",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "5.1.0",
            "upper_bound" : "6.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/cesarferreira/SwiftEventBus.git"
    }
  ],
  "manifest_display_name" : "UnleashProxyClientSwift",
  "name" : "UnleashProxyClientSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "UnleashProxyClientSwift",
      "targets" : [
        "UnleashProxyClientSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "UnleashProxyClientSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "UnleashProxyClientSwiftTests",
      "path" : "Tests/UnleashProxyClientSwiftTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Tests/UnleashProxyClientSwiftTests/FeatureResponseStub.json",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "BootstrapTests.swift",
        "FakeHTTPResponse.swift",
        "ImpressionEventsTests.swift",
        "MetricsTests.swift",
        "MockMetrics.swift",
        "MockPoller.swift",
        "PollerTests.swift",
        "UnleashClientIntegrationTest.swift",
        "UnleashProxyClientSwiftTests.swift",
        "UnleashThreadSafetyTest.swift",
        "testUtils.swift"
      ],
      "target_dependencies" : [
        "UnleashProxyClientSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "UnleashProxyClientSwift",
      "module_type" : "SwiftTarget",
      "name" : "UnleashProxyClientSwift",
      "path" : "Sources/UnleashProxyClientSwift",
      "product_dependencies" : [
        "SwiftEventBus"
      ],
      "product_memberships" : [
        "UnleashProxyClientSwift"
      ],
      "sources" : [
        "Client/Bootstrap.swift",
        "Client/UnleashProxyClientSwift.swift",
        "DTO/Context.swift",
        "DTO/FeatureResponse.swift",
        "DTO/Payload.swift",
        "DTO/Toggle.swift",
        "DTO/UnleashEvent.swift",
        "DTO/Variant.swift",
        "Events/ImpressionEvent.swift",
        "Metrics/Bucket.swift",
        "Metrics/Metrics.swift",
        "Metrics/MetricsPayload.swift",
        "Metrics/ToggleMetrics.swift",
        "Poller/CustomHeadersProvider.swift",
        "Poller/DefaultCustomHeadersProvider.swift",
        "Poller/DictionaryStorageProvider.swift",
        "Poller/Poller.swift",
        "Poller/PollerError.swift",
        "Poller/PollerSession.swift",
        "Poller/StorageProvider.swift",
        "Utils/Date+iso8601String.swift",
        "Utils/Printer.swift",
        "Utils/URLSession+Extensions.swift",
        "Utils/utils.swift",
        "Version/Version.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/cesarferreira/SwiftEventBus.git
Creating working copy of package ‘SwiftEventBus’
Checking out 5.3.0 of package ‘SwiftEventBus’
Resolve Package Graph
Resolved source packages:
  SwiftEventBus: https://github.com/cesarferreira/SwiftEventBus.git @ 5.3.0
  UnleashProxyClientSwift: /Users/admin/builder/spi-builder-workspace
resolved source packages: SwiftEventBus, UnleashProxyClientSwift
{
  "dependencies" : [
    {
      "identity" : "swifteventbus",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "5.1.0",
            "upper_bound" : "6.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/cesarferreira/SwiftEventBus.git"
    }
  ],
  "manifest_display_name" : "UnleashProxyClientSwift",
  "name" : "UnleashProxyClientSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "UnleashProxyClientSwift",
      "targets" : [
        "UnleashProxyClientSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "UnleashProxyClientSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "UnleashProxyClientSwiftTests",
      "path" : "Tests/UnleashProxyClientSwiftTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Tests/UnleashProxyClientSwiftTests/FeatureResponseStub.json",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "BootstrapTests.swift",
        "FakeHTTPResponse.swift",
        "ImpressionEventsTests.swift",
        "MetricsTests.swift",
        "MockMetrics.swift",
        "MockPoller.swift",
        "PollerTests.swift",
        "UnleashClientIntegrationTest.swift",
        "UnleashProxyClientSwiftTests.swift",
        "UnleashThreadSafetyTest.swift",
        "testUtils.swift"
      ],
      "target_dependencies" : [
        "UnleashProxyClientSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "UnleashProxyClientSwift",
      "module_type" : "SwiftTarget",
      "name" : "UnleashProxyClientSwift",
      "path" : "Sources/UnleashProxyClientSwift",
      "product_dependencies" : [
        "SwiftEventBus"
      ],
      "product_memberships" : [
        "UnleashProxyClientSwift"
      ],
      "sources" : [
        "Client/Bootstrap.swift",
        "Client/UnleashProxyClientSwift.swift",
        "DTO/Context.swift",
        "DTO/FeatureResponse.swift",
        "DTO/Payload.swift",
        "DTO/Toggle.swift",
        "DTO/UnleashEvent.swift",
        "DTO/Variant.swift",
        "Events/ImpressionEvent.swift",
        "Metrics/Bucket.swift",
        "Metrics/Metrics.swift",
        "Metrics/MetricsPayload.swift",
        "Metrics/ToggleMetrics.swift",
        "Poller/CustomHeadersProvider.swift",
        "Poller/DefaultCustomHeadersProvider.swift",
        "Poller/DictionaryStorageProvider.swift",
        "Poller/Poller.swift",
        "Poller/PollerError.swift",
        "Poller/PollerSession.swift",
        "Poller/StorageProvider.swift",
        "Utils/Date+iso8601String.swift",
        "Utils/Printer.swift",
        "Utils/URLSession+Extensions.swift",
        "Utils/utils.swift",
        "Version/Version.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "UnleashProxyClientSwift"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme UnleashProxyClientSwift -destination generic/platform=watchOS OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme UnleashProxyClientSwift -destination generic/platform=watchOS "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  SwiftEventBus: https://github.com/cesarferreira/SwiftEventBus.git @ 5.3.0
  UnleashProxyClientSwift: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (4 targets)
    Target 'UnleashProxyClientSwift' in project 'UnleashProxyClientSwift'
        ➜ Explicit dependency on target 'UnleashProxyClientSwift' in project 'UnleashProxyClientSwift'
        ➜ Explicit dependency on target 'SwiftEventBus' in project 'SwiftEventBus'
    Target 'UnleashProxyClientSwift' in project 'UnleashProxyClientSwift'
        ➜ Explicit dependency on target 'SwiftEventBus' in project 'SwiftEventBus'
    Target 'SwiftEventBus' in project 'SwiftEventBus'
        ➜ Explicit dependency on target 'SwiftEventBus' in project 'SwiftEventBus'
    Target 'SwiftEventBus' in project 'SwiftEventBus' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: e0b61c77bb0332f42a2b8b116a555e58
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/e0b61c77bb0332f42a2b8b116a555e58.xcbuilddata
error: The package product 'SwiftEventBus' requires minimum platform version 6.0 for the watchOS platform, but this target supports 5.0 (in target 'UnleashProxyClientSwift' from project 'UnleashProxyClientSwift')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme UnleashProxyClientSwift
(1 failure)
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  SwiftEventBus: https://github.com/cesarferreira/SwiftEventBus.git @ 5.3.0
  UnleashProxyClientSwift: /Users/admin/builder/spi-builder-workspace
resolved source packages: SwiftEventBus, UnleashProxyClientSwift
{
  "dependencies" : [
    {
      "identity" : "swifteventbus",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "5.1.0",
            "upper_bound" : "6.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/cesarferreira/SwiftEventBus.git"
    }
  ],
  "manifest_display_name" : "UnleashProxyClientSwift",
  "name" : "UnleashProxyClientSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "UnleashProxyClientSwift",
      "targets" : [
        "UnleashProxyClientSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "UnleashProxyClientSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "UnleashProxyClientSwiftTests",
      "path" : "Tests/UnleashProxyClientSwiftTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Tests/UnleashProxyClientSwiftTests/FeatureResponseStub.json",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "BootstrapTests.swift",
        "FakeHTTPResponse.swift",
        "ImpressionEventsTests.swift",
        "MetricsTests.swift",
        "MockMetrics.swift",
        "MockPoller.swift",
        "PollerTests.swift",
        "UnleashClientIntegrationTest.swift",
        "UnleashProxyClientSwiftTests.swift",
        "UnleashThreadSafetyTest.swift",
        "testUtils.swift"
      ],
      "target_dependencies" : [
        "UnleashProxyClientSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "UnleashProxyClientSwift",
      "module_type" : "SwiftTarget",
      "name" : "UnleashProxyClientSwift",
      "path" : "Sources/UnleashProxyClientSwift",
      "product_dependencies" : [
        "SwiftEventBus"
      ],
      "product_memberships" : [
        "UnleashProxyClientSwift"
      ],
      "sources" : [
        "Client/Bootstrap.swift",
        "Client/UnleashProxyClientSwift.swift",
        "DTO/Context.swift",
        "DTO/FeatureResponse.swift",
        "DTO/Payload.swift",
        "DTO/Toggle.swift",
        "DTO/UnleashEvent.swift",
        "DTO/Variant.swift",
        "Events/ImpressionEvent.swift",
        "Metrics/Bucket.swift",
        "Metrics/Metrics.swift",
        "Metrics/MetricsPayload.swift",
        "Metrics/ToggleMetrics.swift",
        "Poller/CustomHeadersProvider.swift",
        "Poller/DefaultCustomHeadersProvider.swift",
        "Poller/DictionaryStorageProvider.swift",
        "Poller/Poller.swift",
        "Poller/PollerError.swift",
        "Poller/PollerSession.swift",
        "Poller/StorageProvider.swift",
        "Utils/Date+iso8601String.swift",
        "Utils/Printer.swift",
        "Utils/URLSession+Extensions.swift",
        "Utils/utils.swift",
        "Version/Version.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "UnleashProxyClientSwift"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme UnleashProxyClientSwift -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme UnleashProxyClientSwift -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
  SwiftEventBus: https://github.com/cesarferreira/SwiftEventBus.git @ 5.3.0
  UnleashProxyClientSwift: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (4 targets)
    Target 'UnleashProxyClientSwift' in project 'UnleashProxyClientSwift'
        ➜ Explicit dependency on target 'UnleashProxyClientSwift' in project 'UnleashProxyClientSwift'
        ➜ Explicit dependency on target 'SwiftEventBus' in project 'SwiftEventBus'
    Target 'UnleashProxyClientSwift' in project 'UnleashProxyClientSwift'
        ➜ Explicit dependency on target 'SwiftEventBus' in project 'SwiftEventBus'
    Target 'SwiftEventBus' in project 'SwiftEventBus'
        ➜ Explicit dependency on target 'SwiftEventBus' in project 'SwiftEventBus'
    Target 'SwiftEventBus' in project 'SwiftEventBus' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: bfce3a68d023ca2676a2bba41d6706c7
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/bfce3a68d023ca2676a2bba41d6706c7.xcbuilddata
error: The package product 'SwiftEventBus' requires minimum platform version 6.0 for the watchOS platform, but this target supports 5.0 (in target 'UnleashProxyClientSwift' from project 'UnleashProxyClientSwift')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme UnleashProxyClientSwift
(1 failure)
BUILD FAILURE 6.1 watchOS