Featureflip – Build Information – Swift Package Index

Build Information

Successful build of Featureflip, reference master (7bf7a3), with Swift 6.4 for macOS (SPM) on 23 Oct 2026 00:47:26 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 5.1.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/canopy-labs/featureflip-swift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/canopy-labs/featureflip-swift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 7bf7a3a Release v3.4.0
Cloned https://github.com/canopy-labs/featureflip-swift.git
Revision (git rev-parse @):
7bf7a3ab45969716da1c6c4a5f35ff3fb62e2975
SUCCESS checkout https://github.com/canopy-labs/featureflip-swift.git at master
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "traits": [
    "default"
  ],
  "dependencies": [
    {
      "identity": "featureflip-swift",
      "name": "Featureflip",
      "url": "https://github.com/canopy-labs/featureflip-swift.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/featureflip-swift",
      "traits": [
        "default"
      ],
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/canopy-labs/featureflip-swift.git
[1/214] Fetching featureflip-swift
Fetched https://github.com/canopy-labs/featureflip-swift.git (0.94s)
Creating working copy for https://github.com/canopy-labs/featureflip-swift.git
Working copy of https://github.com/canopy-labs/featureflip-swift.git resolved at master (7bf7a3a)
warning: '.resolve-product-dependencies': dependency 'featureflip-swift' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/canopy-labs/featureflip-swift.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0.app xcrun swift build --arch arm64
Building for debugging...
[Constructing description]
[Planning deferred tasks]
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Build complete! (11.80 sec)
/Users/admin/builder/spi-builder-workspace/Sources/Featureflip/PollingDataSource.swift:74:14: [1;33mwarning: [1;39minstance method 'lock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m72 |[0;0m
[0;36m73 |[0;0m     func pollOnce() async {
[0;36m74 |[0;0m         lock.lock()
   [0;36m|[0;0m              `- [1;33mwarning: [1;39minstance method 'lock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m75 |[0;0m         let currentContext = context
[0;36m76 |[0;0m         lock.unlock()
/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSLock.h:15:1: [1;39mnote: [1;39m'lock()' declared here[0;0m
 [0;36m13 |[0;0m
 [0;36m14 |[0;0m /// Attempts to acquire a lock, blocking a thread's execution until the lock can be acquired.
 [0;36m15 |[0;0m - (void)lock NS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use async-safe scoped locking instead");
    [0;36m|[0;0m `- [1;39mnote: [1;39m'lock()' declared here[0;0m
 [0;36m16 |[0;0m
 [0;36m17 |[0;0m /// Relinquishes a previously acquired lock.
/Users/admin/builder/spi-builder-workspace/Sources/Featureflip/PollingDataSource.swift:76:14: [1;33mwarning: [1;39minstance method 'unlock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m74 |[0;0m         lock.lock()
[0;36m75 |[0;0m         let currentContext = context
[0;36m76 |[0;0m         lock.unlock()
   [0;36m|[0;0m              `- [1;33mwarning: [1;39minstance method 'unlock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m77 |[0;0m         do {
[0;36m78 |[0;0m             let result = try await httpClient.evaluate(context: currentContext)
/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSLock.h:18:1: [1;39mnote: [1;39m'unlock()' declared here[0;0m
 [0;36m16 |[0;0m
 [0;36m17 |[0;0m /// Relinquishes a previously acquired lock.
 [0;36m18 |[0;0m - (void)unlock NS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use async-safe scoped locking instead");
    [0;36m|[0;0m `- [1;39mnote: [1;39m'unlock()' declared here[0;0m
 [0;36m19 |[0;0m
 [0;36m20 |[0;0m @end
/Users/admin/builder/spi-builder-workspace/Sources/Featureflip/PollingDataSource.swift:79:18: [1;33mwarning: [1;39minstance method 'lock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m77 |[0;0m         do {
[0;36m78 |[0;0m             let result = try await httpClient.evaluate(context: currentContext)
[0;36m79 |[0;0m             lock.lock()
   [0;36m|[0;0m                  `- [1;33mwarning: [1;39minstance method 'lock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m80 |[0;0m             let isStopped = stopped
[0;36m81 |[0;0m             lock.unlock()
/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSLock.h:15:1: [1;39mnote: [1;39m'lock()' declared here[0;0m
 [0;36m13 |[0;0m
 [0;36m14 |[0;0m /// Attempts to acquire a lock, blocking a thread's execution until the lock can be acquired.
 [0;36m15 |[0;0m - (void)lock NS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use async-safe scoped locking instead");
    [0;36m|[0;0m `- [1;39mnote: [1;39m'lock()' declared here[0;0m
 [0;36m16 |[0;0m
 [0;36m17 |[0;0m /// Relinquishes a previously acquired lock.
/Users/admin/builder/spi-builder-workspace/Sources/Featureflip/PollingDataSource.swift:81:18: [1;33mwarning: [1;39minstance method 'unlock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m79 |[0;0m             lock.lock()
[0;36m80 |[0;0m             let isStopped = stopped
[0;36m81 |[0;0m             lock.unlock()
   [0;36m|[0;0m                  `- [1;33mwarning: [1;39minstance method 'unlock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m82 |[0;0m             if isStopped { return }
[0;36m83 |[0;0m             onChange(result.flags)
/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSLock.h:18:1: [1;39mnote: [1;39m'unlock()' declared here[0;0m
 [0;36m16 |[0;0m
 [0;36m17 |[0;0m /// Relinquishes a previously acquired lock.
 [0;36m18 |[0;0m - (void)unlock NS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use async-safe scoped locking instead");
    [0;36m|[0;0m `- [1;39mnote: [1;39m'unlock()' declared here[0;0m
 [0;36m19 |[0;0m
 [0;36m20 |[0;0m @end
/Users/admin/builder/spi-builder-workspace/Sources/Featureflip/StreamingDataSource.swift:206:18: [1;33mwarning: [1;39minstance method 'lock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m204 |[0;0m             // front would make the first reconnect after it sleep the pre-outage
[0;36m205 |[0;0m             // delay — up to the 30s cap — instead of the base.
[0;36m206 |[0;0m             lock.lock()
    [0;36m|[0;0m                  `- [1;33mwarning: [1;39minstance method 'lock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m207 |[0;0m             retryCount += 1
[0;36m208 |[0;0m             let armFallback = retryCount >= Self.maxRetries && !fallbackActive
/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSLock.h:15:1: [1;39mnote: [1;39m'lock()' declared here[0;0m
 [0;36m13 |[0;0m
 [0;36m14 |[0;0m /// Attempts to acquire a lock, blocking a thread's execution until the lock can be acquired.
 [0;36m15 |[0;0m - (void)lock NS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use async-safe scoped locking instead");
    [0;36m|[0;0m `- [1;39mnote: [1;39m'lock()' declared here[0;0m
 [0;36m16 |[0;0m
 [0;36m17 |[0;0m /// Relinquishes a previously acquired lock.
/Users/admin/builder/spi-builder-workspace/Sources/Featureflip/StreamingDataSource.swift:214:18: [1;33mwarning: [1;39minstance method 'unlock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m212 |[0;0m             let currentBackoff = backoff
[0;36m213 |[0;0m             backoff = Self.nextBackoff(backoff)
[0;36m214 |[0;0m             lock.unlock()
    [0;36m|[0;0m                  `- [1;33mwarning: [1;39minstance method 'unlock' is unavailable from asynchronous contexts; Use async-safe scoped locking instead; this is an error in the Swift 6 language mode[0;0m
[0;36m215 |[0;0m
[0;36m216 |[0;0m             // The fallback is ADDITIVE, never terminal (#3075). Polling covers the
/Applications/Xcode-27.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSLock.h:18:1: [1;39mnote: [1;39m'unlock()' declared here[0;0m
 [0;36m16 |[0;0m
 [0;36m17 |[0;0m /// Relinquishes a previously acquired lock.
 [0;36m18 |[0;0m - (void)unlock NS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use async-safe scoped locking instead");
    [0;36m|[0;0m `- [1;39mnote: [1;39m'unlock()' declared here[0;0m
 [0;36m19 |[0;0m
 [0;36m20 |[0;0m @end
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Featureflip",
  "name" : "Featureflip",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    },
    {
      "name" : "watchos",
      "version" : "8.0"
    }
  ],
  "products" : [
    {
      "name" : "Featureflip",
      "targets" : [
        "Featureflip"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FeatureflipTests",
      "module_type" : "SwiftTarget",
      "name" : "FeatureflipTests",
      "path" : "Tests/FeatureflipTests",
      "sources" : [
        "AnonymousKeyTests.swift",
        "ConfigTests.swift",
        "ContextValueTypeTests.swift",
        "EventFlushCoalescingTests.swift",
        "EventFlushResilienceTests.swift",
        "EventProcessorTests.swift",
        "FeatureflipClientFactoryTests.swift",
        "FeatureflipClientTests.swift",
        "FeatureflipTests.swift",
        "FlagCacheTests.swift",
        "Helpers/MockHTTPLoader.swift",
        "HttpClientTests.swift",
        "InspectorTests.swift",
        "LifecycleObserverTests.swift",
        "PollingDataSourceTests.swift",
        "PrerequisiteKeyTests.swift",
        "ReadRecorderTests.swift",
        "ReadReportingBenchmarkTests.swift",
        "ReadReportingCoreTests.swift",
        "SdkIdentityTests.swift",
        "SharedFeatureflipCoreTests.swift",
        "StreamingDataSourceTests.swift",
        "SwiftUITests.swift",
        "UseAfterCloseTests.swift"
      ],
      "target_dependencies" : [
        "Featureflip"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Featureflip",
      "module_type" : "SwiftTarget",
      "name" : "Featureflip",
      "path" : "Sources/Featureflip",
      "product_memberships" : [
        "Featureflip"
      ],
      "sources" : [
        "AnonymousKeyStore.swift",
        "Diagnostics.swift",
        "EventProcessor.swift",
        "FeatureflipClient.swift",
        "FeatureflipConfig.swift",
        "FlagCache.swift",
        "HttpClient.swift",
        "LifecycleObserver.swift",
        "Models.swift",
        "PollingDataSource.swift",
        "Protocols.swift",
        "ReadRecorder.swift",
        "SdkIdentity.swift",
        "SharedFeatureflipCore.swift",
        "StreamingDataSource.swift",
        "SwiftUI/FeatureFlag.swift",
        "SwiftUI/FeatureFlagProvider.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Done.