Swift Package Index

Build Information

Failed to build YFlow, reference main (ffb4d0), with Swift 6.3 for Wasm on 17 Apr 2026 07:56:09 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/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

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/SeeyouYsen/YFlow.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/SeeyouYsen/YFlow
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at ffb4d07 Update Stream.swift
Cloned https://github.com/SeeyouYsen/YFlow.git
Revision (git rev-parse @):
ffb4d076f4287ee948cb6fa87bad763bd583e354
SUCCESS checkout https://github.com/SeeyouYsen/YFlow.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/SeeyouYsen/YFlow.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/5] Emitting module YFlow
/host/spi-builder-workspace/Sources/YFlow/Stream.swift:60:25: error: cannot find 'DispatchQueue' in scope
 58 |
 59 |     /// Concurrent dispatch queue for thread-safe listener management
 60 |     private let queue = DispatchQueue(label: "Stream.queue", attributes: .concurrent)
    |                         `- error: cannot find 'DispatchQueue' in scope
 61 |
 62 |     /// Flag indicating whether the stream has been cancelled
/host/spi-builder-workspace/Sources/YFlow/Stream.swift:60:75: error: cannot infer contextual base in reference to member 'concurrent'
 58 |
 59 |     /// Concurrent dispatch queue for thread-safe listener management
 60 |     private let queue = DispatchQueue(label: "Stream.queue", attributes: .concurrent)
    |                                                                           `- error: cannot infer contextual base in reference to member 'concurrent'
 61 |
 62 |     /// Flag indicating whether the stream has been cancelled
[4/5] Compiling YFlow Stream.swift
/host/spi-builder-workspace/Sources/YFlow/Stream.swift:60:25: error: cannot find 'DispatchQueue' in scope
 58 |
 59 |     /// Concurrent dispatch queue for thread-safe listener management
 60 |     private let queue = DispatchQueue(label: "Stream.queue", attributes: .concurrent)
    |                         `- error: cannot find 'DispatchQueue' in scope
 61 |
 62 |     /// Flag indicating whether the stream has been cancelled
/host/spi-builder-workspace/Sources/YFlow/Stream.swift:60:75: error: cannot infer contextual base in reference to member 'concurrent'
 58 |
 59 |     /// Concurrent dispatch queue for thread-safe listener management
 60 |     private let queue = DispatchQueue(label: "Stream.queue", attributes: .concurrent)
    |                                                                           `- error: cannot infer contextual base in reference to member 'concurrent'
 61 |
 62 |     /// Flag indicating whether the stream has been cancelled
/host/spi-builder-workspace/Sources/YFlow/Stream.swift:74:29: error: cannot infer contextual base in reference to member 'barrier'
 72 |     public func cancel() {
 73 |         isCancelled = true
 74 |         queue.async(flags: .barrier) {
    |                             `- error: cannot infer contextual base in reference to member 'barrier'
 75 |             self.listeners.removeAll()
 76 |         }
/host/spi-builder-workspace/Sources/YFlow/Stream.swift:101:28: error: cannot infer contextual base in reference to member 'barrier'
 99 |         let wrapper = ListenerWrapper(listener)
100 |
101 |         queue.sync(flags: .barrier) {
    |                            `- error: cannot infer contextual base in reference to member 'barrier'
102 |             self.listeners.append(wrapper)
103 |         }
/host/spi-builder-workspace/Sources/YFlow/Stream.swift:113:29: error: cannot infer contextual base in reference to member 'barrier'
111 |     /// - Parameter wrapper: The listener wrapper to remove
112 |     private func removeListener(_ wrapper: ListenerWrapper<T>) {
113 |         queue.async(flags: .barrier) {
    |                             `- error: cannot infer contextual base in reference to member 'barrier'
114 |             self.listeners.removeAll { $0 === wrapper }
115 |         }
[5/5] Compiling YFlow Completer.swift
BUILD FAILURE 6.3 wasm