Swift Package IndexBuild Information
Successful build of Swdifft, reference master (e92c79), with Swift 6.1 for Linux on 25 Apr 2025 15:05:29 UTC.
Swift 6 data race errors: 4
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" registry.gitlab.com/finestructure/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>&1Build Log
========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/bannzai/swdifft.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/bannzai/swdifft
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at e92c79b Merge pull request #5 from bannzai/enhancement/performance/index
Cloned https://github.com/bannzai/swdifft.git
Revision (git rev-parse @):
e92c79b9da9d2f87b3bfc6411eccf936b72db51e
SUCCESS checkout https://github.com/bannzai/swdifft.git at master
========================================
Build
========================================
Selected platform: linux
Swift version: 6.1
Building package at path: $PWD
https://github.com/bannzai/swdifft.git
https://github.com/bannzai/swdifft.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
"dependencies" : [
],
"manifest_display_name" : "Swdifft",
"name" : "Swdifft",
"path" : "/host/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "Swdifft",
"targets" : [
"Swdifft"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SwdifftTests",
"module_type" : "SwiftTarget",
"name" : "SwdifftTests",
"path" : "Tests/SwdifftTests",
"sources" : [
"SwdifftTests.swift",
"XCTestManifests.swift"
],
"target_dependencies" : [
"Swdifft"
],
"type" : "test"
},
{
"c99name" : "Swdifft",
"module_type" : "SwiftTarget",
"name" : "Swdifft",
"path" : "Sources/Swdifft",
"product_memberships" : [
"Swdifft"
],
"sources" : [
"Formatter.swift",
"InternalDiffFunction.swift",
"Marks.swift",
"StringExtension.swift",
"Swdifft.swift",
"longestCommonSubsequence.swift"
],
"type" : "library"
}
],
"tools_version" : "5.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" registry.gitlab.com/finestructure/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 finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/9] Compiling Swdifft Marks.swift
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:10:12: warning: var 'beginLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
8 | import Foundation
9 |
10 | public var beginLHSMark = "`"
| |- warning: var 'beginLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'beginLHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'beginLHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 | public var endLHSMark = "`"
12 |
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:11:12: warning: var 'endLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
9 |
10 | public var beginLHSMark = "`"
11 | public var endLHSMark = "`"
| |- warning: var 'endLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'endLHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'endLHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
12 |
13 | public var beginRHSMark = "*"
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:13:12: warning: var 'beginRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
11 | public var endLHSMark = "`"
12 |
13 | public var beginRHSMark = "*"
| |- warning: var 'beginRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'beginRHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'beginRHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 | public var endRHSMark = "*"
15 |
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:14:12: warning: var 'endRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
12 |
13 | public var beginRHSMark = "*"
14 | public var endRHSMark = "*"
| |- warning: var 'endRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'endRHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'endRHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
15 |
16 |
[4/9] Compiling Swdifft Swdifft.swift
[5/9] Compiling Swdifft longestCommonSubsequence.swift
[6/9] Emitting module Swdifft
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:10:12: warning: var 'beginLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
8 | import Foundation
9 |
10 | public var beginLHSMark = "`"
| |- warning: var 'beginLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'beginLHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'beginLHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 | public var endLHSMark = "`"
12 |
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:11:12: warning: var 'endLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
9 |
10 | public var beginLHSMark = "`"
11 | public var endLHSMark = "`"
| |- warning: var 'endLHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'endLHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'endLHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
12 |
13 | public var beginRHSMark = "*"
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:13:12: warning: var 'beginRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
11 | public var endLHSMark = "`"
12 |
13 | public var beginRHSMark = "*"
| |- warning: var 'beginRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'beginRHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'beginRHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 | public var endRHSMark = "*"
15 |
/host/spi-builder-workspace/Sources/Swdifft/Marks.swift:14:12: warning: var 'endRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
12 |
13 | public var beginRHSMark = "*"
14 | public var endRHSMark = "*"
| |- warning: var 'endRHSMark' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'endRHSMark' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make var 'endRHSMark' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
15 |
16 |
[7/9] Compiling Swdifft Formatter.swift
[8/9] Compiling Swdifft StringExtension.swift
[9/9] Compiling Swdifft InternalDiffFunction.swift
/host/spi-builder-workspace/Sources/Swdifft/InternalDiffFunction.swift:56:33: warning: capture of 'extract(target:commonCharacter:diffWords:beginIndex:)' with non-sendable type '(Content, Character, (begin: String, end: String), inout Int) -> Result' (aka '(String, Character, (begin: String, end: String), inout Int) -> Result') in a '@Sendable' closure; this is an error in the Swift 6 language mode
54 | DispatchQueue.global().async {
55 | let r = lcs.reduce("") { (result, commonCharacter) in
56 | return result + extract(target: target, commonCharacter: commonCharacter, diffWords: (begin: diffWords.begin, end: diffWords.end), beginIndex: &beginIndex).stack
| |- warning: capture of 'extract(target:commonCharacter:diffWords:beginIndex:)' with non-sendable type '(Content, Character, (begin: String, end: String), inout Int) -> Result' (aka '(String, Character, (begin: String, end: String), inout Int) -> Result') in a '@Sendable' closure; this is an error in the Swift 6 language mode
| `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
57 | }
58 |
/host/spi-builder-workspace/Sources/Swdifft/InternalDiffFunction.swift:59:13: warning: capture of 'closure' with non-sendable type '(Content) -> ()' (aka '(String) -> ()') in a '@Sendable' closure; this is an error in the Swift 6 language mode
57 | }
58 |
59 | closure(r)
| |- warning: capture of 'closure' with non-sendable type '(Content) -> ()' (aka '(String) -> ()') in a '@Sendable' closure; this is an error in the Swift 6 language mode
| `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
60 | }
61 | }
/host/spi-builder-workspace/Sources/Swdifft/InternalDiffFunction.swift:56:33: warning: capture of 'extract(target:commonCharacter:diffWords:beginIndex:)' with non-sendable type '(Content, Character, (begin: String, end: String), inout Int) -> Result' (aka '(String, Character, (begin: String, end: String), inout Int) -> Result') in an isolated closure; this is an error in the Swift 6 language mode
54 | DispatchQueue.global().async {
55 | let r = lcs.reduce("") { (result, commonCharacter) in
56 | return result + extract(target: target, commonCharacter: commonCharacter, diffWords: (begin: diffWords.begin, end: diffWords.end), beginIndex: &beginIndex).stack
| |- warning: capture of 'extract(target:commonCharacter:diffWords:beginIndex:)' with non-sendable type '(Content, Character, (begin: String, end: String), inout Int) -> Result' (aka '(String, Character, (begin: String, end: String), inout Int) -> Result') in an isolated closure; this is an error in the Swift 6 language mode
| `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
57 | }
58 |
/host/spi-builder-workspace/Sources/Swdifft/InternalDiffFunction.swift:20:10: warning: concurrently-executed local function 'extract(target:commonCharacter:diffWords:beginIndex:)' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
18 | }
19 |
20 | func extract(target: Content, commonCharacter: Character, diffWords: (begin: String, end: String), beginIndex step: inout Int) -> Result {
| `- warning: concurrently-executed local function 'extract(target:commonCharacter:diffWords:beginIndex:)' must be marked as '@Sendable'; this is an error in the Swift 6 language mode
21 | var result = Result()
22 |
/host/spi-builder-workspace/Sources/Swdifft/InternalDiffFunction.swift:56:161: warning: mutation of captured var 'beginIndex' in concurrently-executing code; this is an error in the Swift 6 language mode
54 | DispatchQueue.global().async {
55 | let r = lcs.reduce("") { (result, commonCharacter) in
56 | return result + extract(target: target, commonCharacter: commonCharacter, diffWords: (begin: diffWords.begin, end: diffWords.end), beginIndex: &beginIndex).stack
| `- warning: mutation of captured var 'beginIndex' in concurrently-executing code; this is an error in the Swift 6 language mode
57 | }
58 |
Build complete! (7.82s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "Swdifft",
"name" : "Swdifft",
"path" : "/host/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "Swdifft",
"targets" : [
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],
"targets" : [
{
"c99name" : "SwdifftTests",
"module_type" : "SwiftTarget",
"name" : "SwdifftTests",
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"path" : "Sources/Swdifft",
"product_memberships" : [
"Swdifft"
],
"sources" : [
"Formatter.swift",
"InternalDiffFunction.swift",
"Marks.swift",
"StringExtension.swift",
"Swdifft.swift",
"longestCommonSubsequence.swift"
],
"type" : "library"
}
],
"tools_version" : "5.0"
}
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.