Swift Package IndexBuild Information
Successful build of BigNumber, reference v2.4.0 (7e2117), with Swift 6.1 for macOS (SPM) on 28 Mar 2026 21:47:46 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
========================================
RunAll
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Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mkrd/Swift-BigInt.git
Reference: v2.4.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mkrd/Swift-BigInt
* tag v2.4.0 -> FETCH_HEAD
HEAD is now at 7e21177 update deploy workflow
Cloned https://github.com/mkrd/Swift-BigInt.git
Revision (git rev-parse @):
7e2117797cd1b608303cc2da1a3a2263cc4e7727
SUCCESS checkout https://github.com/mkrd/Swift-BigInt.git at v2.4.0
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/mkrd/Swift-BigInt.git
https://github.com/mkrd/Swift-BigInt.git
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"targets" : [
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"module_type" : "SwiftTarget",
"name" : "MGToolsTests",
"path" : "Tests/MGToolsTests",
"sources" : [
"MG Math Tests.swift",
"MG Matrix Tests.swift"
],
"target_dependencies" : [
"MGTools"
],
"type" : "test"
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{
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"sources" : [
"MG Benchmark Tools.swift",
"MG Complex.swift",
"MG IO.swift",
"MG Math.swift",
"MG Matrix.swift",
"MG QueueDispatch.swift",
"MG Storage.swift",
"MG SuperSwift.swift"
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"target_dependencies" : [
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{
"c99name" : "BigNumberTests",
"module_type" : "SwiftTarget",
"name" : "BigNumberTests",
"path" : "Tests/BigNumberTests",
"sources" : [
"BDoubleTests.swift",
"BIntTests.swift",
"Test_Advanced_Math.swift",
"Test_BIntMath.swift",
"Test_Basic_Math.swift",
"Test_Initialization.swift",
"Test_String_Conversions.swift"
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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...
[0/8] Write sources
[0/8] Write Benchmarks-entitlement.plist
[2/8] Write sources
[4/8] Write swift-version-2F0A5646E1D333AE.txt
[6/10] Compiling BigNumber Swift-Big-Number-Core.swift
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:262:23: warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
260 |
261 | /// Common prefixes for different bases
262 | static public var stringPrefixes = [
| |- warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'stringPrefixes' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'stringPrefixes' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
263 | 2: "0b",
264 | 8: "0o",
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:2495:21: warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2493 | }
2494 |
2495 | static private var _precision = 4
| |- warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_precision' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_precision' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2496 | /**
2497 | * the global percision for all newly created values
[7/10] Emitting module BigNumber
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:262:23: warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
260 |
261 | /// Common prefixes for different bases
262 | static public var stringPrefixes = [
| |- warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'stringPrefixes' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'stringPrefixes' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
263 | 2: "0b",
264 | 8: "0o",
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:2495:21: warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2493 | }
2494 |
2495 | static private var _precision = 4
| |- warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_precision' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_precision' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2496 | /**
2497 | * the global percision for all newly created values
[8/19] Compiling MGTools MG SuperSwift.swift
[9/19] Compiling MGTools MG Complex.swift
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG Complex.swift:24:19: warning: setter argument 'newValue' was never used, but the property was accessed
22 | {
23 | get { return self.re }
24 | set { self.re = r }
| |- warning: setter argument 'newValue' was never used, but the property was accessed
| `- note: did you mean to use 'newValue' instead of accessing the property's current value?
25 | }
26 |
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG Complex.swift:30:19: warning: setter argument 'newValue' was never used, but the property was accessed
28 | {
29 | get { return self.im }
30 | set { self.im = i }
| |- warning: setter argument 'newValue' was never used, but the property was accessed
| `- note: did you mean to use 'newValue' instead of accessing the property's current value?
31 | }
32 | }
[10/19] Compiling MGTools MG Storage.swift
[11/19] Compiling MGTools MG QueueDispatch.swift
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG QueueDispatch.swift:25:69: warning: passing non-sendable parameter 'closure' to function expecting a @Sendable closure
19 | Run trailing closure after a given time in seconds in background queue.
20 | */
21 | static public func runAfterDelay(_ seconds: Double, _ closure: @escaping () -> ())
| `- note: parameter 'closure' is implicitly non-sendable
22 | {
23 | let queue = DispatchQueue.global()
24 |
25 | queue.asyncAfter(deadline: DispatchTime.now() + seconds, execute: closure)
| `- warning: passing non-sendable parameter 'closure' to function expecting a @Sendable closure
26 | }
27 |
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG QueueDispatch.swift:40:23: warning: converting non-sendable function value to '@Sendable () -> Void' may introduce data races
38 | for closure in closures
39 | {
40 | queue.addOperation(closure)
| `- warning: converting non-sendable function value to '@Sendable () -> Void' may introduce data races
41 | }
42 |
[12/19] Emitting module MGTools
[13/19] Compiling MGTools MG Benchmark Tools.swift
[14/19] Compiling MGTools MG IO.swift
[15/19] Compiling MGTools MG Math.swift
[16/19] Compiling MGTools MG Matrix.swift
[17/22] Compiling Benchmarks main.swift
[18/22] Emitting module Benchmarks
[19/22] Compiling Benchmarks Benchmarks.swift
[19/22] Write Objects.LinkFileList
[20/22] Linking Benchmarks
[21/22] Applying Benchmarks
Build complete! (6.80s)
Build complete.
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Done.