Swift Package IndexBuild Information
Successful build of MultiplicativeArithmetic, reference 2.1.0 (960ccc), with Swift 6.1 for macOS (SPM) on 25 Jun 2026 15:16:09 UTC.
Swift 6 data race errors: 2
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
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Clone URL: https://github.com/RougeWare/Swift-MultiplicativeArithmetic.git
Reference: 2.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/RougeWare/Swift-MultiplicativeArithmetic
* tag 2.1.0 -> FETCH_HEAD
HEAD is now at 960ccc5 Merge pull request #15 from RougeWare/feature/Linux/init
Cloned https://github.com/RougeWare/Swift-MultiplicativeArithmetic.git
Revision (git rev-parse @):
960ccc54d6c876983c6658d4aca637b4685e9841
SUCCESS checkout https://github.com/RougeWare/Swift-MultiplicativeArithmetic.git at 2.1.0
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Build
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Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/RougeWare/Swift-MultiplicativeArithmetic.git
https://github.com/RougeWare/Swift-MultiplicativeArithmetic.git
{
"dependencies" : [
],
"manifest_display_name" : "MultiplicativeArithmetic",
"name" : "MultiplicativeArithmetic",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "MultiplicativeArithmetic",
"targets" : [
"MultiplicativeArithmetic"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "MultiplicativeArithmeticTests",
"module_type" : "SwiftTarget",
"name" : "MultiplicativeArithmeticTests",
"path" : "Tests/MultiplicativeArithmeticTests",
"sources" : [
"Decimal + MultiplicativeArithmetic tests.swift",
"MultiplicativeArithmeticTests.swift",
"XCTestManifests.swift"
],
"target_dependencies" : [
"MultiplicativeArithmetic"
],
"type" : "test"
},
{
"c99name" : "MultiplicativeArithmetic",
"module_type" : "SwiftTarget",
"name" : "MultiplicativeArithmetic",
"path" : "Sources/MultiplicativeArithmetic",
"product_memberships" : [
"MultiplicativeArithmetic"
],
"sources" : [
"Default Conformances.swift",
"MultiplicativeArithmetic.swift"
],
"type" : "library"
}
],
"tools_version" : "5.1"
}
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...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/5] Compiling MultiplicativeArithmetic MultiplicativeArithmetic.swift
[4/5] Emitting module MultiplicativeArithmetic
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/MultiplicativeArithmetic/Default Conformances.swift:15:17: warning: let '_pow' is not concurrency-safe because non-'Sendable' type '(Double, Double) -> Double' may have shared mutable state; this is an error in the Swift 6 language mode
13 | #if canImport(Darwin)
14 | import Darwin
15 | private let _pow: (Double, Double) -> Double = Darwin.pow
| |- warning: let '_pow' is not concurrency-safe because non-'Sendable' type '(Double, Double) -> Double' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let '_pow' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
16 | private let _powf: (Float, Float) -> Float = Darwin.powf
17 | #if (arch(i386) || arch(x86_64)) && !os(Windows)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/MultiplicativeArithmetic/Default Conformances.swift:16:17: warning: let '_powf' is not concurrency-safe because non-'Sendable' type '(Float, Float) -> Float' may have shared mutable state; this is an error in the Swift 6 language mode
14 | import Darwin
15 | private let _pow: (Double, Double) -> Double = Darwin.pow
16 | private let _powf: (Float, Float) -> Float = Darwin.powf
| |- warning: let '_powf' is not concurrency-safe because non-'Sendable' type '(Float, Float) -> Float' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let '_powf' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
17 | #if (arch(i386) || arch(x86_64)) && !os(Windows)
18 | private let _powl: (Float80, Float80) -> Float80 = Darwin.powl
[5/5] Compiling MultiplicativeArithmetic Default Conformances.swift
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/MultiplicativeArithmetic/Default Conformances.swift:15:17: warning: let '_pow' is not concurrency-safe because non-'Sendable' type '(Double, Double) -> Double' may have shared mutable state; this is an error in the Swift 6 language mode
13 | #if canImport(Darwin)
14 | import Darwin
15 | private let _pow: (Double, Double) -> Double = Darwin.pow
| |- warning: let '_pow' is not concurrency-safe because non-'Sendable' type '(Double, Double) -> Double' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let '_pow' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
16 | private let _powf: (Float, Float) -> Float = Darwin.powf
17 | #if (arch(i386) || arch(x86_64)) && !os(Windows)
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/MultiplicativeArithmetic/Default Conformances.swift:16:17: warning: let '_powf' is not concurrency-safe because non-'Sendable' type '(Float, Float) -> Float' may have shared mutable state; this is an error in the Swift 6 language mode
14 | import Darwin
15 | private let _pow: (Double, Double) -> Double = Darwin.pow
16 | private let _powf: (Float, Float) -> Float = Darwin.powf
| |- warning: let '_powf' is not concurrency-safe because non-'Sendable' type '(Float, Float) -> Float' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let '_powf' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
17 | #if (arch(i386) || arch(x86_64)) && !os(Windows)
18 | private let _powl: (Float80, Float80) -> Float80 = Darwin.powl
Build complete! (3.55s)
Build complete.
{
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],
"manifest_display_name" : "MultiplicativeArithmetic",
"name" : "MultiplicativeArithmetic",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "MultiplicativeArithmetic",
"targets" : [
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],
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}
],
"targets" : [
{
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"module_type" : "SwiftTarget",
"name" : "MultiplicativeArithmeticTests",
"path" : "Tests/MultiplicativeArithmeticTests",
"sources" : [
"Decimal + MultiplicativeArithmetic tests.swift",
"MultiplicativeArithmeticTests.swift",
"XCTestManifests.swift"
],
"target_dependencies" : [
"MultiplicativeArithmetic"
],
"type" : "test"
},
{
"c99name" : "MultiplicativeArithmetic",
"module_type" : "SwiftTarget",
"name" : "MultiplicativeArithmetic",
"path" : "Sources/MultiplicativeArithmetic",
"product_memberships" : [
"MultiplicativeArithmetic"
],
"sources" : [
"Default Conformances.swift",
"MultiplicativeArithmetic.swift"
],
"type" : "library"
}
],
"tools_version" : "5.1"
}
Done.