Swift Package IndexBuild Information
Successful build of BigNumber, reference master (e35508), with Swift 6.1 for Linux on 29 Mar 2026 15:52:53 UTC.
Swift 6 data race errors: 3
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mkrd/Swift-BigInt.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/mkrd/Swift-BigInt
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at e355084 add test case
Cloned https://github.com/mkrd/Swift-BigInt.git
Revision (git rev-parse @):
e3550843fed908ee3759ee37553cc8a83d9ea3b8
SUCCESS checkout https://github.com/mkrd/Swift-BigInt.git at master
========================================
Build
========================================
Selected platform: linux
Swift version: 6.1
Building package at path: $PWD
https://github.com/mkrd/Swift-BigInt.git
https://github.com/mkrd/Swift-BigInt.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
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"name" : "BigNumber",
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{
"name" : "BigNumber",
"targets" : [
"BigNumber"
],
"type" : {
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"automatic"
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"name" : "Verify",
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"Verify"
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"targets" : [
"Benchmarks"
],
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"targets" : [
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"name" : "Verify",
"path" : "Sources/Verify",
"product_memberships" : [
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"sources" : [
"main.swift"
],
"target_dependencies" : [
"BigNumber",
"MGTools"
],
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},
{
"c99name" : "MGToolsTests",
"module_type" : "SwiftTarget",
"name" : "MGToolsTests",
"path" : "Tests/MGToolsTests",
"sources" : [
"MG Math Tests.swift",
"MG Matrix Tests.swift"
],
"target_dependencies" : [
"MGTools"
],
"type" : "test"
},
{
"c99name" : "MGTools",
"module_type" : "SwiftTarget",
"name" : "MGTools",
"path" : "Sources/MGTools",
"product_memberships" : [
"Verify",
"Benchmarks"
],
"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"
],
"target_dependencies" : [
"BigNumber"
],
"type" : "library"
},
{
"c99name" : "BigNumberTests",
"module_type" : "SwiftTarget",
"name" : "BigNumberTests",
"path" : "Tests/BigNumberTests",
"sources" : [
"BDoubleTests.swift",
"BIntTests.swift",
"Test_Advanced_Math.swift",
"Test_BDouble_Extended.swift",
"Test_BIntMath.swift",
"Test_BIntMath_Extended.swift",
"Test_BInt_Division.swift",
"Test_BInt_Properties.swift",
"Test_Basic_Math.swift",
"Test_Bitwise_Operations.swift",
"Test_Initialization.swift",
"Test_String_Conversions.swift",
"Test_String_Conversions_Extended.swift"
],
"target_dependencies" : [
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],
"target_dependencies" : [
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],
"type" : "executable"
}
],
"tools_version" : "4.2"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:108e10880bce35e9496fba26782956e40a8e91a2a227f9b90af7e4cd93d2c183
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.1-latest
Building for debugging...
[0/13] Write sources
[4/13] Write swift-version-24593BA9C3E375BF.txt
[6/15] Emitting module BigNumber
/host/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",
/host/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:2615:21: 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
2613 | }
2614 |
2615 | 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
2616 | /**
2617 | * the global percision for all newly created values
[7/15] Compiling BigNumber Swift-Big-Number-Core.swift
/host/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",
/host/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:2615:21: 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
2613 | }
2614 |
2615 | 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
2616 | /**
2617 | * the global percision for all newly created values
[8/16] Wrapping AST for BigNumber for debugging
[10/24] Compiling MGTools MG Complex.swift
/host/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 |
/host/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 | }
[11/25] Compiling MGTools MG QueueDispatch.swift
/host/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 |
/host/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 |
[12/25] Compiling MGTools MG Storage.swift
[13/25] Emitting module MGTools
[14/25] Compiling MGTools MG Benchmark Tools.swift
[15/25] Compiling MGTools MG SuperSwift.swift
[16/25] Compiling MGTools MG IO.swift
[17/25] Compiling MGTools MG Math.swift
[18/25] Compiling MGTools MG Matrix.swift
[19/26] Wrapping AST for MGTools for debugging
[21/31] Emitting module Verify
[22/31] Compiling Verify main.swift
/host/spi-builder-workspace/Sources/Verify/main.swift:9:5: error: main actor-isolated var 'total' can not be mutated from a nonisolated context
4 |
5 | var failures = 0
6 | var total = 0
| `- note: mutation of this var is only permitted within the actor
7 |
8 | func check(_ condition: Bool, _ msg: String = "", file: String = #file, line: Int = #line) {
| `- note: add '@MainActor' to make global function 'check(_:_:file:line:)' part of global actor 'MainActor'
9 | total += 1
| `- error: main actor-isolated var 'total' can not be mutated from a nonisolated context
10 | if !condition {
11 | failures += 1
/host/spi-builder-workspace/Sources/Verify/main.swift:11:9: error: main actor-isolated var 'failures' can not be mutated from a nonisolated context
3 | @testable import MGTools
4 |
5 | var failures = 0
| `- note: mutation of this var is only permitted within the actor
6 | var total = 0
7 |
8 | func check(_ condition: Bool, _ msg: String = "", file: String = #file, line: Int = #line) {
| `- note: add '@MainActor' to make global function 'check(_:_:file:line:)' part of global actor 'MainActor'
9 | total += 1
10 | if !condition {
11 | failures += 1
| `- error: main actor-isolated var 'failures' can not be mutated from a nonisolated context
12 | print("FAIL [\(file):\(line)] \(msg)")
13 | }
/host/spi-builder-workspace/Sources/Verify/main.swift:17:5: error: main actor-isolated var 'total' can not be mutated from a nonisolated context
4 |
5 | var failures = 0
6 | var total = 0
| `- note: mutation of this var is only permitted within the actor
7 |
8 | func check(_ condition: Bool, _ msg: String = "", file: String = #file, line: Int = #line) {
:
14 | }
15 |
16 | func checkEqual<T: Equatable>(_ a: T, _ b: T, _ msg: String = "", file: String = #file, line: Int = #line) {
| `- note: add '@MainActor' to make global function 'checkEqual(_:_:_:file:line:)' part of global actor 'MainActor'
17 | total += 1
| `- error: main actor-isolated var 'total' can not be mutated from a nonisolated context
18 | if a != b {
19 | failures += 1
/host/spi-builder-workspace/Sources/Verify/main.swift:19:9: error: main actor-isolated var 'failures' can not be mutated from a nonisolated context
3 | @testable import MGTools
4 |
5 | var failures = 0
| `- note: mutation of this var is only permitted within the actor
6 | var total = 0
7 |
:
14 | }
15 |
16 | func checkEqual<T: Equatable>(_ a: T, _ b: T, _ msg: String = "", file: String = #file, line: Int = #line) {
| `- note: add '@MainActor' to make global function 'checkEqual(_:_:_:file:line:)' part of global actor 'MainActor'
17 | total += 1
18 | if a != b {
19 | failures += 1
| `- error: main actor-isolated var 'failures' can not be mutated from a nonisolated context
20 | print("FAIL [\(file):\(line)] \(a) != \(b) \(msg)")
21 | }
[23/31] Emitting module Benchmarks
/host/spi-builder-workspace/Sources/Benchmarks/Benchmarks.swift:20:5: warning: let 'allBenchmarks' is not concurrency-safe because non-'Sendable' type '[BenchmarkEntry]' may have shared mutable state; this is an error in the Swift 6 language mode
3 | @testable import MGTools
4 |
5 | struct BenchmarkEntry {
| `- note: consider making struct 'BenchmarkEntry' conform to the 'Sendable' protocol
6 | let name: String
7 | let setup: () -> (() -> Void)
:
18 | }
19 |
20 | let allBenchmarks: [BenchmarkEntry] = [
| |- warning: let 'allBenchmarks' is not concurrency-safe because non-'Sendable' type '[BenchmarkEntry]' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let 'allBenchmarks' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
21 | BenchmarkEntry(name: "BDouble converging to two for 3000 steps") { {
22 | var res: BDouble = 0
[24/31] Compiling Benchmarks Benchmarks.swift
/host/spi-builder-workspace/Sources/Benchmarks/Benchmarks.swift:20:5: warning: let 'allBenchmarks' is not concurrency-safe because non-'Sendable' type '[BenchmarkEntry]' may have shared mutable state; this is an error in the Swift 6 language mode
3 | @testable import MGTools
4 |
5 | struct BenchmarkEntry {
| `- note: consider making struct 'BenchmarkEntry' conform to the 'Sendable' protocol
6 | let name: String
7 | let setup: () -> (() -> Void)
:
18 | }
19 |
20 | let allBenchmarks: [BenchmarkEntry] = [
| |- warning: let 'allBenchmarks' is not concurrency-safe because non-'Sendable' type '[BenchmarkEntry]' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let 'allBenchmarks' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
21 | BenchmarkEntry(name: "BDouble converging to two for 3000 steps") { {
22 | var res: BDouble = 0
[25/31] Compiling Benchmarks main.swift
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:108e10880bce35e9496fba26782956e40a8e91a2a227f9b90af7e4cd93d2c183
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.1-latest
[0/1] Planning build
Building for debugging...
[0/9] Write swift-version-24593BA9C3E375BF.txt
[2/11] Emitting module BigNumber
[3/11] Compiling BigNumber Swift-Big-Number-Core.swift
[4/12] Wrapping AST for BigNumber for debugging
[6/20] Compiling MGTools MG IO.swift
[7/21] Compiling MGTools MG QueueDispatch.swift
/host/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 |
/host/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 |
[8/21] Compiling MGTools MG Storage.swift
[9/21] Emitting module MGTools
[10/21] Compiling MGTools MG Benchmark Tools.swift
[11/21] Compiling MGTools MG SuperSwift.swift
[12/21] Compiling MGTools MG Complex.swift
/host/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 |
/host/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 | }
[13/21] Compiling MGTools MG Math.swift
[14/21] Compiling MGTools MG Matrix.swift
[15/27] Wrapping AST for MGTools for debugging
[17/27] Emitting module Verify
[18/27] Compiling Verify main.swift
[19/28] Compiling Benchmarks main.swift
[20/28] Emitting module Benchmarks
[21/28] Compiling Benchmarks Benchmarks.swift
[23/29] Wrapping AST for Verify for debugging
[24/29] Write Objects.LinkFileList
[25/29] Wrapping AST for Benchmarks for debugging
[26/29] Write Objects.LinkFileList
[27/29] Linking Verify
[28/29] Linking Benchmarks
Build complete! (7.08s)
Build complete.
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"c99name" : "MGToolsTests",
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"MG Matrix.swift",
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"sources" : [
"BDoubleTests.swift",
"BIntTests.swift",
"Test_Advanced_Math.swift",
"Test_BDouble_Extended.swift",
"Test_BIntMath.swift",
"Test_BIntMath_Extended.swift",
"Test_BInt_Division.swift",
"Test_BInt_Properties.swift",
"Test_Basic_Math.swift",
"Test_Bitwise_Operations.swift",
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"BigNumber",
"MGTools"
],
"type" : "executable"
}
],
"tools_version" : "4.2"
}
basic-6.1-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:108e10880bce35e9496fba26782956e40a8e91a2a227f9b90af7e4cd93d2c183
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.1-latest
Done.