Swift Package IndexBuild Information
Successful build of BrainFlow, reference 0.0.1-dev.20260608.1 (56cbdc), with Swift 6.1 for macOS (SPM) on 29 Jun 2026 15:14:13 UTC.
Swift 6 data race errors: 6
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 InferSendableFromCapturesBuild Log
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RunAll
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Builder version: undefined version: run 'make version' to update
Interrupt handler set up.
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Checkout
========================================
Clone URL: https://github.com/tsvvladimir/brainflow-swift.git
Reference: 0.0.1-dev.20260608.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/tsvvladimir/brainflow-swift
* tag 0.0.1-dev.20260608.1 -> FETCH_HEAD
HEAD is now at 56cbdc6 Release BrainFlow Swift dev package
Cloned https://github.com/tsvvladimir/brainflow-swift.git
Revision (git rev-parse @):
56cbdc6651427f12c20e5a2ab750eb7903d04581
SUCCESS checkout https://github.com/tsvvladimir/brainflow-swift.git at 0.0.1-dev.20260608.1
========================================
Build
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Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/tsvvladimir/brainflow-swift.git
https://github.com/tsvvladimir/brainflow-swift.git
{
"dependencies" : [
],
"manifest_display_name" : "BrainFlow",
"name" : "BrainFlow",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "12.0"
},
{
"name" : "ios",
"version" : "15.0"
}
],
"products" : [
{
"name" : "BrainFlow",
"targets" : [
"BrainFlow"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "MLModule",
"module_type" : "BinaryTarget",
"name" : "MLModule",
"path" : "remote/archive/MLModule.xcframework.zip",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "DataHandler",
"module_type" : "BinaryTarget",
"name" : "DataHandler",
"path" : "remote/archive/DataHandler.xcframework.zip",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "BrainFlow",
"module_type" : "SwiftTarget",
"name" : "BrainFlow",
"path" : "Sources/BrainFlow",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
"BoardShim.swift",
"BrainFlowEnums.swift",
"BrainFlowError.swift",
"BrainFlowNative.swift",
"BrainFlowParams.swift",
"BrainFlowTypes.swift",
"DataFilter.swift",
"MLModel.swift"
],
"target_dependencies" : [
"BoardController",
"DataHandler",
"MLModule"
],
"type" : "library"
},
{
"c99name" : "BoardController",
"module_type" : "BinaryTarget",
"name" : "BoardController",
"path" : "remote/archive/BoardController.xcframework.zip",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
],
"type" : "binary"
}
],
"tools_version" : "5.9"
}
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
[1/5] Copying DataHandler.framework
[2/5] Copying MLModule.framework
[3/5] Copying BoardController.framework
[4/5] Write swift-version-2F0A5646E1D333AE.txt
[6/14] Compiling BrainFlow BrainFlowTypes.swift
[7/14] Compiling BrainFlow MLModel.swift
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/MLModel.swift:115:24: warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
113 |
114 | private static let lock = NSLock()
115 | private static var cached: MLModelNative?
| |- warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'cached' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'cached' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
116 |
117 | static func withML<T>(_ body: (MLModelNative) throws -> T) throws -> T {
[8/14] Compiling BrainFlow BrainFlowError.swift
[9/14] Compiling BrainFlow BrainFlowNative.swift
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BrainFlowNative.swift:139:16: warning: static property 'boardController' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
137 |
138 | enum NativeLibraries {
139 | static let boardController = LazyNativeLibrary(names: [
| |- warning: static property 'boardController' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'boardController' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
140 | platformLibraryName(base: "BoardController"),
141 | "BoardController"
:
161 | }
162 |
163 | final class LazyNativeLibrary {
| `- note: class 'LazyNativeLibrary' does not conform to the 'Sendable' protocol
164 | private let names: [String]
165 | private let lock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BrainFlowNative.swift:143:16: warning: static property 'dataHandler' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
141 | "BoardController"
142 | ])
143 | static let dataHandler = LazyNativeLibrary(names: [
| |- warning: static property 'dataHandler' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'dataHandler' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
144 | platformLibraryName(base: "DataHandler"),
145 | "DataHandler"
:
161 | }
162 |
163 | final class LazyNativeLibrary {
| `- note: class 'LazyNativeLibrary' does not conform to the 'Sendable' protocol
164 | private let names: [String]
165 | private let lock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BrainFlowNative.swift:147:16: warning: static property 'mlModule' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
145 | "DataHandler"
146 | ])
147 | static let mlModule = LazyNativeLibrary(names: [
| |- warning: static property 'mlModule' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'mlModule' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
148 | platformLibraryName(base: "MLModule"),
149 | "MLModule"
:
161 | }
162 |
163 | final class LazyNativeLibrary {
| `- note: class 'LazyNativeLibrary' does not conform to the 'Sendable' protocol
164 | private let names: [String]
165 | private let lock = NSLock()
[10/14] Compiling BrainFlow BrainFlowEnums.swift
[11/14] Emitting module BrainFlow
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BoardShim.swift:593:24: warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
591 |
592 | private static let lock = NSLock()
593 | private static var cached: BoardShimNative?
| |- warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'cached' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'cached' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
594 |
595 | static func withBoard<T>(_ body: (BoardShimNative) throws -> T) throws -> T {
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BrainFlowNative.swift:139:16: warning: static property 'boardController' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
137 |
138 | enum NativeLibraries {
139 | static let boardController = LazyNativeLibrary(names: [
| |- warning: static property 'boardController' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'boardController' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
140 | platformLibraryName(base: "BoardController"),
141 | "BoardController"
:
161 | }
162 |
163 | final class LazyNativeLibrary {
| `- note: class 'LazyNativeLibrary' does not conform to the 'Sendable' protocol
164 | private let names: [String]
165 | private let lock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BrainFlowNative.swift:143:16: warning: static property 'dataHandler' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
141 | "BoardController"
142 | ])
143 | static let dataHandler = LazyNativeLibrary(names: [
| |- warning: static property 'dataHandler' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'dataHandler' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
144 | platformLibraryName(base: "DataHandler"),
145 | "DataHandler"
:
161 | }
162 |
163 | final class LazyNativeLibrary {
| `- note: class 'LazyNativeLibrary' does not conform to the 'Sendable' protocol
164 | private let names: [String]
165 | private let lock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BrainFlowNative.swift:147:16: warning: static property 'mlModule' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
145 | "DataHandler"
146 | ])
147 | static let mlModule = LazyNativeLibrary(names: [
| |- warning: static property 'mlModule' is not concurrency-safe because non-'Sendable' type 'LazyNativeLibrary' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'mlModule' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
148 | platformLibraryName(base: "MLModule"),
149 | "MLModule"
:
161 | }
162 |
163 | final class LazyNativeLibrary {
| `- note: class 'LazyNativeLibrary' does not conform to the 'Sendable' protocol
164 | private let names: [String]
165 | private let lock = NSLock()
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/DataFilter.swift:765:24: warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
763 |
764 | private static let lock = NSLock()
765 | private static var cached: DataFilterNative?
| |- warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'cached' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'cached' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
766 |
767 | static func withData<T>(_ body: (DataFilterNative) throws -> T) throws -> T {
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/MLModel.swift:115:24: warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
113 |
114 | private static let lock = NSLock()
115 | private static var cached: MLModelNative?
| |- warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'cached' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'cached' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
116 |
117 | static func withML<T>(_ body: (MLModelNative) throws -> T) throws -> T {
[12/14] Compiling BrainFlow BoardShim.swift
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/BoardShim.swift:593:24: warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
591 |
592 | private static let lock = NSLock()
593 | private static var cached: BoardShimNative?
| |- warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'cached' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'cached' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
594 |
595 | static func withBoard<T>(_ body: (BoardShimNative) throws -> T) throws -> T {
[13/14] Compiling BrainFlow BrainFlowParams.swift
[14/14] Compiling BrainFlow DataFilter.swift
/Users/admin/builder/spi-builder-workspace/Sources/BrainFlow/DataFilter.swift:765:24: warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
763 |
764 | private static let lock = NSLock()
765 | private static var cached: DataFilterNative?
| |- warning: static property 'cached' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'cached' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'cached' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
766 |
767 | static func withData<T>(_ body: (DataFilterNative) throws -> T) throws -> T {
Build complete! (6.18s)
Downloading binary artifact https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/BoardController.xcframework.zip
Downloading binary artifact https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/MLModule.xcframework.zip
Downloading binary artifact https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/DataHandler.xcframework.zip
[16375/2325922] Downloading https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/BoardController.xcframework.zip
[2342098/3934296] Downloading https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/BoardController.xcframework.zip, https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/DataHandler.xcframework.zip
[2357593/4386609] Downloading https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/BoardController.xcframework.zip, https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/DataHandler.xcframework.zip, https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/MLModule.xcframework.zip
Downloaded https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/MLModule.xcframework.zip (0.49s)
Downloaded https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/BoardController.xcframework.zip (0.54s)
Downloaded https://github.com/tsvvladimir/brainflow-swift/releases/download/0.0.1-dev.20260608.1/DataHandler.xcframework.zip (0.55s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "BrainFlow",
"name" : "BrainFlow",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "12.0"
},
{
"name" : "ios",
"version" : "15.0"
}
],
"products" : [
{
"name" : "BrainFlow",
"targets" : [
"BrainFlow"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "MLModule",
"module_type" : "BinaryTarget",
"name" : "MLModule",
"path" : "remote/archive/MLModule.xcframework.zip",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "DataHandler",
"module_type" : "BinaryTarget",
"name" : "DataHandler",
"path" : "remote/archive/DataHandler.xcframework.zip",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "BrainFlow",
"module_type" : "SwiftTarget",
"name" : "BrainFlow",
"path" : "Sources/BrainFlow",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
"BoardShim.swift",
"BrainFlowEnums.swift",
"BrainFlowError.swift",
"BrainFlowNative.swift",
"BrainFlowParams.swift",
"BrainFlowTypes.swift",
"DataFilter.swift",
"MLModel.swift"
],
"target_dependencies" : [
"BoardController",
"DataHandler",
"MLModule"
],
"type" : "library"
},
{
"c99name" : "BoardController",
"module_type" : "BinaryTarget",
"name" : "BoardController",
"path" : "remote/archive/BoardController.xcframework.zip",
"product_memberships" : [
"BrainFlow"
],
"sources" : [
],
"type" : "binary"
}
],
"tools_version" : "5.9"
}
Done.