Swift Package Index

Build Information

Failed to build ConcurrencyRecipes, reference main (dd373e), with Swift 6.1 for Wasm on 4 Sep 2026 12:25:07 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344843-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.0.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/dimasusername/ConcurrencyRecipes.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/dimasusername/ConcurrencyRecipes
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at dd373eb Update links
Cloned https://github.com/dimasusername/ConcurrencyRecipes.git
Revision (git rev-parse @):
dd373eb786e35593fef2494e69646d6aeb133c7a
SUCCESS checkout https://github.com/dimasusername/ConcurrencyRecipes.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/dimasusername/ConcurrencyRecipes.git
https://github.com/dimasusername/ConcurrencyRecipes.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi -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
wasm-6.1-latest: Pulling from saguaro1/spi-images
Digest: sha256:290f441d1f5b7bf0dbbe61e8b7514208804cdcb507d57b3c762463ad036298f7
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/4] Emitting module PreconcurrencyLib
[4/4] Compiling PreconcurrencyLib PreconcurrencyStuff.swift
/host/spi-builder-workspace/Sources/PreconcurrencyLib/PreconcurrencyStuff.swift:4:2: error: cannot find 'DispatchQueue' in scope
 2 |
 3 | public func acceptEscapingBlock(_ block: @escaping () -> Void) {
 4 | 	DispatchQueue.global().async {
   |  `- error: cannot find 'DispatchQueue' in scope
 5 | 		block()
 6 | 	}
/host/spi-builder-workspace/Sources/PreconcurrencyLib/PreconcurrencyStuff.swift:10:2: error: cannot find 'DispatchQueue' in scope
 8 |
 9 | public func unannotatedEscapingSendableBlock(_ block: @escaping @Sendable () -> Void) {
10 | 	DispatchQueue.global().async {
   |  `- error: cannot find 'DispatchQueue' in scope
11 | 		block()
12 | 	}
/host/spi-builder-workspace/Sources/PreconcurrencyLib/PreconcurrencyStuff.swift:17:2: error: cannot find 'DispatchQueue' in scope
15 | @preconcurrency
16 | public func annotatedEscapingSendableBlock(_ block: @escaping @Sendable () -> Void) {
17 | 	DispatchQueue.global().async {
   |  `- error: cannot find 'DispatchQueue' in scope
18 | 		block()
19 | 	}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1
wasm-6.1-latest: Pulling from saguaro1/spi-images
Digest: sha256:290f441d1f5b7bf0dbbe61e8b7514208804cdcb507d57b3c762463ad036298f7
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.1-latest
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/3] Emitting module PreconcurrencyLib
[3/3] Compiling PreconcurrencyLib PreconcurrencyStuff.swift
/host/spi-builder-workspace/Sources/PreconcurrencyLib/PreconcurrencyStuff.swift:4:2: error: cannot find 'DispatchQueue' in scope
 2 |
 3 | public func acceptEscapingBlock(_ block: @escaping () -> Void) {
 4 | 	DispatchQueue.global().async {
   |  `- error: cannot find 'DispatchQueue' in scope
 5 | 		block()
 6 | 	}
/host/spi-builder-workspace/Sources/PreconcurrencyLib/PreconcurrencyStuff.swift:10:2: error: cannot find 'DispatchQueue' in scope
 8 |
 9 | public func unannotatedEscapingSendableBlock(_ block: @escaping @Sendable () -> Void) {
10 | 	DispatchQueue.global().async {
   |  `- error: cannot find 'DispatchQueue' in scope
11 | 		block()
12 | 	}
/host/spi-builder-workspace/Sources/PreconcurrencyLib/PreconcurrencyStuff.swift:17:2: error: cannot find 'DispatchQueue' in scope
15 | @preconcurrency
16 | public func annotatedEscapingSendableBlock(_ block: @escaping @Sendable () -> Void) {
17 | 	DispatchQueue.global().async {
   |  `- error: cannot find 'DispatchQueue' in scope
18 | 		block()
19 | 	}
BUILD FAILURE 6.1 wasm