Swift Package IndexBuild Information
Failed to build ConcurrencyPlus, reference main (daf69e), with Swift 6.3 for Wasm on 22 Apr 2026 12:16:01 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.
========================================
Checkout
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Clone URL: https://github.com/ChimeHQ/ConcurrencyPlus.git
Reference: main
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
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at daf69ed Prepare for archiving
Cloned https://github.com/ChimeHQ/ConcurrencyPlus.git
Revision (git rev-parse @):
daf69ed837fa04d4ba666f5a99378cf1815f0dab
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ChimeHQ/ConcurrencyPlus.git at main
========================================
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
[3/10] 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,
[4/10] Compiling ConcurrencyPlus Continuation+Resuming.swift
[5/10] Compiling ConcurrencyPlus MainActor+Unsafe.swift
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:25:3: error: cannot find 'dispatchPrecondition' in scope
23 | #endif
24 |
25 | dispatchPrecondition(condition: .onQueue(.main))
| `- error: cannot find 'dispatchPrecondition' in scope
26 | return try withoutActuallyEscaping(body) { fn in
27 | try unsafeBitCast(fn, to: (() throws -> T).self)()
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:25:36: error: cannot infer contextual base in reference to member 'onQueue'
23 | #endif
24 |
25 | dispatchPrecondition(condition: .onQueue(.main))
| `- error: cannot infer contextual base in reference to member 'onQueue'
26 | return try withoutActuallyEscaping(body) { fn in
27 | try unsafeBitCast(fn, to: (() throws -> T).self)()
/host/spi-builder-workspace/Sources/ConcurrencyPlus/MainActor+Unsafe.swift:25:45: error: cannot infer contextual base in reference to member 'main'
23 | #endif
24 |
25 | dispatchPrecondition(condition: .onQueue(.main))
| `- error: cannot infer contextual base in reference to member 'main'
26 | return try withoutActuallyEscaping(body) { fn in
27 | try unsafeBitCast(fn, to: (() throws -> T).self)()
error: emit-module command failed with exit code 1 (use -v to see invocation)
[6/10] Emitting module ConcurrencyPlus
/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 | }
[7/10] Compiling ConcurrencyPlus NSXPCConnection+Continuation.swift
[8/10] Compiling ConcurrencyPlus SendableContainers.swift
[9/10] Compiling ConcurrencyPlus Task+Relay.swift
[10/10] Compiling ConcurrencyPlus TaskQueue.swift
BUILD FAILURE 6.3 wasm