Swift Package IndexBuild Information
Failed to build swift-event-broadcasting, reference mainline (2fc17a), with Swift 6.3 for Wasm on 17 Apr 2026 18:54:58 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/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
========================================
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/antonsynd/swift-event-broadcasting.git
Reference: mainline
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/antonsynd/swift-event-broadcasting
* branch mainline -> FETCH_HEAD
* [new branch] mainline -> origin/mainline
HEAD is now at 2fc17aa Merge pull request #2 from antonsynd/copilot/debug-build-failure
Cloned https://github.com/antonsynd/swift-event-broadcasting.git
Revision (git rev-parse @):
2fc17aab483130e0a70646ab163b9405f862a2d0
SUCCESS checkout https://github.com/antonsynd/swift-event-broadcasting.git at mainline
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/antonsynd/swift-event-broadcasting.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$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
Fetching https://github.com/apple/swift-collections
[1/23569] Fetching swift-collections
Fetched https://github.com/apple/swift-collections from cache (2.38s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.4.1 (3.08s)
Creating working copy for https://github.com/apple/swift-collections
Working copy of https://github.com/apple/swift-collections resolved at 1.4.1
Building for debugging...
[0/11] Write sources
[6/11] Write swift-version-24593BA9C3E375BF.txt
[8/12] Write sources
[12/29] Emitting module InternalCollectionsUtilities
[13/31] Compiling InternalCollectionsUtilities LifetimeOverride.swift
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[15/31] Compiling InternalCollectionsUtilities Span+Extras.swift
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[20/31] Compiling InternalCollectionsUtilities String+Padding.swift
[21/31] Compiling InternalCollectionsUtilities _UnsafeBitSet+Index.swift
[22/31] Compiling InternalCollectionsUtilities _SortedCollection.swift
[23/31] Compiling InternalCollectionsUtilities _UniqueCollection.swift
[24/31] Compiling InternalCollectionsUtilities Debugging.swift
[25/31] Compiling InternalCollectionsUtilities Descriptions.swift
[26/31] Compiling InternalCollectionsUtilities FixedWidthInteger+roundUpToPowerOfTwo.swift
[27/31] Compiling InternalCollectionsUtilities Integer rank.swift
[28/31] Compiling InternalCollectionsUtilities UInt+first and last set bit.swift
[29/31] Compiling InternalCollectionsUtilities UInt+reversed.swift
[30/31] Compiling InternalCollectionsUtilities _UnsafeBitSet+_Word.swift
[31/31] Compiling InternalCollectionsUtilities _UnsafeBitSet.swift
[33/166] Compiling OrderedCollections _HashTable+UnsafeHandle.swift
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[48/288] Compiling HashTreeCollections _HashNode+Primitive Removals.swift
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[53/291] Compiling HashTreeCollections _HashNode+Debugging.swift
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[60/331] Compiling HashTreeCollections _HashNode+Structural merge.swift
[61/331] Compiling HashTreeCollections TreeSet+Hashable.swift
[62/331] Compiling HashTreeCollections TreeSet+Sendable.swift
[63/331] Compiling HashTreeCollections TreeSet+Sequence.swift
[64/331] Emitting module ContainersPreview
[65/331] Compiling HeapModule _HeapNode.swift
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[67/331] Compiling HashTreeCollections _HashNode+Structural subtracting.swift
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[75/332] Compiling HeapModule Heap+UnsafeHandle.swift
[76/332] Compiling HeapModule Heap+ExpressibleByArrayLiteral.swift
[77/332] Emitting module HeapModule
[79/373] Compiling DequeModule Deque+CustomReflectable.swift
[80/373] Compiling DequeModule Deque+Descriptions.swift
[81/373] Compiling DequeModule Deque+Equatable.swift
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[85/373] Compiling DequeModule RigidDeque+Hashable.swift
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[87/380] Compiling DequeModule UniqueDeque+Removals.swift
[88/380] Compiling HashTreeCollections TreeSet+SetAlgebra formSymmetricDifference.swift
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[102/380] Compiling DequeModule UniqueDeque+Experimental.swift
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[126/397] Compiling HashTreeCollections TreeDictionary+Hashable.swift
[127/397] Compiling DequeModule UniqueDeque+Consumption.swift
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[130/397] Compiling DequeModule UniqueDeque+Equatable.swift
[139/402] Compiling DequeModule RigidDeque+Removals.swift
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[142/402] Compiling DequeModule RigidDeque.swift
[143/402] Compiling DequeModule UniqueDeque+Append.swift
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[149/402] Compiling DequeModule _DequeBuffer.swift
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[215/402] Compiling HashTreeCollections TreeSet+SetAlgebra subtract.swift
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[217/402] Compiling HashTreeCollections TreeSet+SetAlgebra symmetricDifference.swift
[218/402] Compiling HashTreeCollections TreeSet+SetAlgebra union.swift
[219/402] Compiling HashTreeCollections TreeSet.swift
[220/402] Emitting module BitCollections
[221/402] Compiling DequeModule Deque+Extras.swift
[222/402] Compiling DequeModule Deque+Hashable.swift
[223/402] Compiling DequeModule Deque+Testing.swift
[224/402] Compiling DequeModule Deque._Storage.swift
[225/402] Compiling DequeModule Deque._UnsafeHandle.swift
[226/402] Compiling DequeModule Deque.swift
[227/402] Compiling DequeModule Deque+Codable.swift
[228/402] Compiling DequeModule Deque+Collection.swift
[230/402] Compiling OrderedCollections OrderedSet+Sendable.swift
[231/402] Compiling OrderedCollections OrderedSet+SubSequence.swift
[232/402] Compiling OrderedCollections OrderedSet+Testing.swift
[233/402] Compiling OrderedCollections OrderedSet+UnorderedView.swift
[234/402] Compiling OrderedCollections OrderedSet+UnstableInternals.swift
[235/402] Compiling OrderedCollections OrderedSet.swift
[250/403] Compiling OrderedCollections _UnsafeBitset.swift
[292/412] Compiling HashTreeCollections TreeDictionary.swift
[293/412] Compiling HashTreeCollections TreeSet+Codable.swift
[294/412] Compiling HashTreeCollections TreeSet+Collection.swift
[295/412] Compiling HashTreeCollections TreeSet+CustomReflectable.swift
[296/412] Compiling _RopeModule Rope+Join.swift
[297/412] Compiling _RopeModule Rope+MutatingForEach.swift
[298/412] Compiling _RopeModule Rope+Remove.swift
[299/412] Compiling _RopeModule Rope+RemoveSubrange.swift
[300/412] Compiling _RopeModule Rope+Split.swift
[301/412] Compiling _RopeModule Optional Utilities.swift
[309/412] Compiling HashTreeCollections TreeDictionary+Collection.swift
[310/412] Compiling HashTreeCollections TreeDictionary+CustomReflectable.swift
[311/412] Compiling HashTreeCollections TreeDictionary+Debugging.swift
[312/412] Compiling HashTreeCollections TreeDictionary+Descriptions.swift
[334/412] Emitting module OrderedCollections
[336/413] Emitting module _RopeModule
[389/413] Compiling DequeModule UniqueDeque.swift
[390/413] Compiling DequeModule _DequeSlot.swift
[391/413] Compiling DequeModule _UnsafeDequeHandle.swift
[398/413] Emitting module HashTreeCollections
[405/414] Emitting module DequeModule
[413/415] Compiling _RopeModule String Utilities.swift
[414/415] Compiling _RopeModule String.Index+ABI.swift
[415/415] Compiling _RopeModule _CharacterRecognizer.swift
[417/422] Compiling Collections DequeModule reexports.swift
[418/422] Compiling Collections HashTreeCollections reexports.swift
[419/422] Compiling Collections HeapModule reexports.swift
[420/422] Compiling Collections OrderedCollections reexports.swift
[421/422] Emitting module Collections
[422/422] Compiling Collections BitCollections reexports.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[424/434] Emitting module Events
/host/spi-builder-workspace/Sources/Events/DispatchQueueEventDispatcher.swift:12:28: error: cannot find 'DispatchQueue' in scope
10 | /// Dispatches events via a single dispatch queue.
11 | final public class DispatchQueueEventDispatcher: EventDispatching {
12 | private let eventQueue = DispatchQueue.global()
| `- error: cannot find 'DispatchQueue' in scope
13 | private static var instance: DispatchQueueEventDispatcher?
14 |
[425/435] Compiling Events EventBroadcaster+Async.swift
[426/435] Compiling Events EventBroadcaster+Combine.swift
[427/435] Compiling Events DispatchQueueEventDispatcher.swift
/host/spi-builder-workspace/Sources/Events/DispatchQueueEventDispatcher.swift:12:28: error: cannot find 'DispatchQueue' in scope
10 | /// Dispatches events via a single dispatch queue.
11 | final public class DispatchQueueEventDispatcher: EventDispatching {
12 | private let eventQueue = DispatchQueue.global()
| `- error: cannot find 'DispatchQueue' in scope
13 | private static var instance: DispatchQueueEventDispatcher?
14 |
[428/435] Compiling Events Event.swift
/host/spi-builder-workspace/Sources/Events/DispatchQueueEventDispatcher.swift:12:28: error: cannot find 'DispatchQueue' in scope
10 | /// Dispatches events via a single dispatch queue.
11 | final public class DispatchQueueEventDispatcher: EventDispatching {
12 | private let eventQueue = DispatchQueue.global()
| `- error: cannot find 'DispatchQueue' in scope
13 | private static var instance: DispatchQueueEventDispatcher?
14 |
[429/435] Compiling Events EventDispatcher.swift
/host/spi-builder-workspace/Sources/Events/DispatchQueueEventDispatcher.swift:12:28: error: cannot find 'DispatchQueue' in scope
10 | /// Dispatches events via a single dispatch queue.
11 | final public class DispatchQueueEventDispatcher: EventDispatching {
12 | private let eventQueue = DispatchQueue.global()
| `- error: cannot find 'DispatchQueue' in scope
13 | private static var instance: DispatchQueueEventDispatcher?
14 |
[430/435] Compiling Events EventBroadcaster.swift
[431/435] Compiling Events EventBroadcaster+Convenience.swift
[432/435] Compiling Events EventBroadcaster+Debugging.swift
[433/435] Compiling Events EventSubscribers.swift
[434/435] Compiling Events ObjectSubscribers.swift
[435/435] Compiling Events TypedEvent.swift
BUILD FAILURE 6.3 wasm