Swift Package IndexBuild Information
Failed to build ConcurrencyPlus, reference 0.4.2 (8dc564), with Swift 6.3 for Wasm on 21 Apr 2026 11:12:34 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1Build Log
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/ChimeHQ/ConcurrencyPlus.git
Reference: 0.4.2
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/ChimeHQ/ConcurrencyPlus
* tag 0.4.2 -> FETCH_HEAD
HEAD is now at 8dc5649 fix indentation for github
Cloned https://github.com/ChimeHQ/ConcurrencyPlus.git
Revision (git rev-parse @):
8dc56499412a373d617d50d059116bccf44b9874
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ChimeHQ/ConcurrencyPlus.git at 0.4.2
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/ChimeHQ/ConcurrencyPlus.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/11] Compiling ConcurrencyPlus SendableContainers.swift
[4/12] Compiling ConcurrencyPlus MainActor+Unsafe.swift
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:9:2: warning: '(unsafe)' global actors are deprecated; use '@preconcurrency' instead; this is an error in the Swift 6 language mode
7 | ///
8 | /// It will crash if run on any non-main thread.
9 | @MainActor(unsafe)
| `- warning: '(unsafe)' global actors are deprecated; use '@preconcurrency' instead; this is an error in the Swift 6 language mode
10 | static func runUnsafely<T>(_ body: @MainActor () throws -> T) rethrows -> T {
11 | dispatchPrecondition(condition: .onQueue(.main))
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:11:3: error: cannot find 'dispatchPrecondition' in scope
9 | @MainActor(unsafe)
10 | static func runUnsafely<T>(_ body: @MainActor () throws -> T) rethrows -> T {
11 | dispatchPrecondition(condition: .onQueue(.main))
| `- error: cannot find 'dispatchPrecondition' in scope
12 |
13 | return try body()
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:11:36: error: cannot infer contextual base in reference to member 'onQueue'
9 | @MainActor(unsafe)
10 | static func runUnsafely<T>(_ body: @MainActor () throws -> T) rethrows -> T {
11 | dispatchPrecondition(condition: .onQueue(.main))
| `- error: cannot infer contextual base in reference to member 'onQueue'
12 |
13 | return try body()
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:11:45: error: cannot infer contextual base in reference to member 'main'
9 | @MainActor(unsafe)
10 | static func runUnsafely<T>(_ body: @MainActor () throws -> T) rethrows -> T {
11 | dispatchPrecondition(condition: .onQueue(.main))
| `- error: cannot infer contextual base in reference to member 'main'
12 |
13 | return try body()
[5/12] Compiling ConcurrencyPlus NSXPCConnection+Continuation.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[6/12] Compiling ConcurrencyPlus AsyncSubject.swift
/host/spi-builder-workspace/Sources/ConcurrencyPlus/AsyncSubject.swift:49:11: warning: 'AsyncSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
47 | }
48 |
49 | extension AsyncSubject: Sendable where Element: Sendable {
| `- warning: 'AsyncSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
50 | }
51 |
/host/spi-builder-workspace/Sources/ConcurrencyPlus/AsyncThrowingSubject.swift:54:11: warning: 'AsyncThrowingSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
52 | }
53 |
54 | extension AsyncThrowingSubject: Sendable where Element: Sendable {
| `- warning: 'AsyncThrowingSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
55 | }
56 |
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
[7/12] Compiling ConcurrencyPlus AsyncThrowingSubject.swift
/host/spi-builder-workspace/Sources/ConcurrencyPlus/AsyncSubject.swift:49:11: warning: 'AsyncSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
47 | }
48 |
49 | extension AsyncSubject: Sendable where Element: Sendable {
| `- warning: 'AsyncSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
50 | }
51 |
/host/spi-builder-workspace/Sources/ConcurrencyPlus/AsyncThrowingSubject.swift:54:11: warning: 'AsyncThrowingSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
52 | }
53 |
54 | extension AsyncThrowingSubject: Sendable where Element: Sendable {
| `- warning: 'AsyncThrowingSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
55 | }
56 |
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
[8/12] Compiling ConcurrencyPlus Continuation+Resuming.swift
[9/12] Emitting module ConcurrencyPlus
/host/spi-builder-workspace/Sources/ConcurrencyPlus/AsyncSubject.swift:49:11: warning: 'AsyncSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
47 | }
48 |
49 | extension AsyncSubject: Sendable where Element: Sendable {
| `- warning: 'AsyncSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
50 | }
51 |
/host/spi-builder-workspace/Sources/ConcurrencyPlus/AsyncThrowingSubject.swift:54:11: warning: 'AsyncThrowingSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
52 | }
53 |
54 | extension AsyncThrowingSubject: Sendable where Element: Sendable {
| `- warning: 'AsyncThrowingSubject' is deprecated: Please see the project README for alternative libraries that provide this functionality [#DeprecatedDeclaration]
55 | }
56 |
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:9:2: warning: '(unsafe)' global actors are deprecated; use '@preconcurrency' instead; this is an error in the Swift 6 language mode
7 | ///
8 | /// It will crash if run on any non-main thread.
9 | @MainActor(unsafe)
| `- warning: '(unsafe)' global actors are deprecated; use '@preconcurrency' instead; this is an error in the Swift 6 language mode
10 | static func runUnsafely<T>(_ body: @MainActor () throws -> T) rethrows -> T {
11 | dispatchPrecondition(condition: .onQueue(.main))
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:5:28: error: cannot find type 'DispatchQueue' in scope
3 | /// A very thin wrapper around `DispatchQueue` with relaxed `Sendable` checks
4 | public struct RelaxedDispatchQueue {
5 | public let internalQueue: DispatchQueue
| `- error: cannot find type 'DispatchQueue' in scope
6 |
7 | public init(label: String,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:8:10: error: cannot find type 'DispatchQoS' in scope
6 |
7 | public init(label: String,
8 | qos: DispatchQoS = .unspecified,
| `- error: cannot find type 'DispatchQoS' in scope
9 | attributes: DispatchQueue.Attributes = [],
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:9:17: error: cannot find type 'DispatchQueue' in scope
7 | public init(label: String,
8 | qos: DispatchQoS = .unspecified,
9 | attributes: DispatchQueue.Attributes = [],
| `- error: cannot find type 'DispatchQueue' in scope
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
11 | target: DispatchQueue? = nil) {
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:10:27: error: cannot find type 'DispatchQueue' in scope
8 | qos: DispatchQoS = .unspecified,
9 | attributes: DispatchQueue.Attributes = [],
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
| `- error: cannot find type 'DispatchQueue' in scope
11 | target: DispatchQueue? = nil) {
12 | self.internalQueue = DispatchQueue(label: label,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:11:13: error: cannot find type 'DispatchQueue' in scope
9 | attributes: DispatchQueue.Attributes = [],
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
11 | target: DispatchQueue? = nil) {
| `- error: cannot find type 'DispatchQueue' in scope
12 | self.internalQueue = DispatchQueue(label: label,
13 | qos: qos,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:19:23: error: cannot find type 'DispatchQueue' in scope
17 | }
18 |
19 | public init(_ queue: DispatchQueue) {
| `- error: cannot find type 'DispatchQueue' in scope
20 | self.internalQueue = queue
21 | }
/host/spi-builder-workspace/Sources/ConcurrencyPlus/TaskQueue.swift:139:32: warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
137 | /// Submit a throwing operation to the global queue.
138 | @discardableResult
139 | public static func ordered<Success>(
| `- warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
140 | priority: TaskPriority? = nil,
141 | operation: @escaping @Sendable () async throws -> Success)
/host/spi-builder-workspace/Sources/ConcurrencyPlus/TaskQueue.swift:148:32: warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
146 | /// Submit an operation to the global queue.
147 | @discardableResult
148 | public static func ordered<Success>(
| `- warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
149 | priority: TaskPriority? = nil,
150 | operation: @escaping @Sendable () async -> Success)
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
[10/12] Compiling ConcurrencyPlus TaskQueue.swift
/host/spi-builder-workspace/Sources/ConcurrencyPlus/TaskQueue.swift:139:32: warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
137 | /// Submit a throwing operation to the global queue.
138 | @discardableResult
139 | public static func ordered<Success>(
| `- warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
140 | priority: TaskPriority? = nil,
141 | operation: @escaping @Sendable () async throws -> Success)
/host/spi-builder-workspace/Sources/ConcurrencyPlus/TaskQueue.swift:148:32: warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
146 | /// Submit an operation to the global queue.
147 | @discardableResult
148 | public static func ordered<Success>(
| `- warning: generic parameter 'Success' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
149 | priority: TaskPriority? = nil,
150 | operation: @escaping @Sendable () async -> Success)
[11/12] Compiling ConcurrencyPlus Task+Relay.swift
[12/12] Compiling ConcurrencyPlus RelaxedDispatchQueue.swift
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:5:28: error: cannot find type 'DispatchQueue' in scope
3 | /// A very thin wrapper around `DispatchQueue` with relaxed `Sendable` checks
4 | public struct RelaxedDispatchQueue {
5 | public let internalQueue: DispatchQueue
| `- error: cannot find type 'DispatchQueue' in scope
6 |
7 | public init(label: String,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:8:10: error: cannot find type 'DispatchQoS' in scope
6 |
7 | public init(label: String,
8 | qos: DispatchQoS = .unspecified,
| `- error: cannot find type 'DispatchQoS' in scope
9 | attributes: DispatchQueue.Attributes = [],
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:9:17: error: cannot find type 'DispatchQueue' in scope
7 | public init(label: String,
8 | qos: DispatchQoS = .unspecified,
9 | attributes: DispatchQueue.Attributes = [],
| `- error: cannot find type 'DispatchQueue' in scope
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
11 | target: DispatchQueue? = nil) {
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:10:27: error: cannot find type 'DispatchQueue' in scope
8 | qos: DispatchQoS = .unspecified,
9 | attributes: DispatchQueue.Attributes = [],
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
| `- error: cannot find type 'DispatchQueue' in scope
11 | target: DispatchQueue? = nil) {
12 | self.internalQueue = DispatchQueue(label: label,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:11:13: error: cannot find type 'DispatchQueue' in scope
9 | attributes: DispatchQueue.Attributes = [],
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
11 | target: DispatchQueue? = nil) {
| `- error: cannot find type 'DispatchQueue' in scope
12 | self.internalQueue = DispatchQueue(label: label,
13 | qos: qos,
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:19:23: error: cannot find type 'DispatchQueue' in scope
17 | }
18 |
19 | public init(_ queue: DispatchQueue) {
| `- error: cannot find type 'DispatchQueue' in scope
20 | self.internalQueue = queue
21 | }
/host/spi-builder-workspace/Sources/ConcurrencyPlus/RelaxedDispatchQueue.swift:12:24: error: cannot find 'DispatchQueue' in scope
10 | autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency = .inherit,
11 | target: DispatchQueue? = nil) {
12 | self.internalQueue = DispatchQueue(label: label,
| `- error: cannot find 'DispatchQueue' in scope
13 | qos: qos,
14 | attributes: attributes,
BUILD FAILURE 6.3 wasm