Swift Package Index

Build Information

Failed to build Mutex, reference main (d9c490), with Swift 6.3 for Wasm on 16 Apr 2026 07:51:13 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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/swhitty/swift-mutex.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/swhitty/swift-mutex
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at d9c4906 Fix Windows CI
Cloned https://github.com/swhitty/swift-mutex.git
Revision (git rev-parse @):
d9c4906095b48fb5d0177d73590f984bf726a17d
SUCCESS checkout https://github.com/swhitty/swift-mutex.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/swhitty/swift-mutex.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$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)
[3/6] Compiling Mutex MutexSwift5.swift
[4/6] Compiling Mutex AllocatedLock.swift
[5/6] Emitting module Mutex
/host/spi-builder-workspace/Sources/Mutex.swift:44:18: error: cannot find type 'Storage' in scope
 42 | @available(visionOS, deprecated: 2.0, message: "use Mutex from Synchronization module")
 43 | public struct Mutex<Value: ~Copyable>: ~Copyable {
 44 |     let storage: Storage<Value>
    |                  `- error: cannot find type 'Storage' in scope
 45 |
 46 |     public init(_ initialValue: consuming sending Value) {
[6/6] Compiling Mutex Mutex.swift
/host/spi-builder-workspace/Sources/Mutex.swift:44:18: error: cannot find type 'Storage' in scope
 42 | @available(visionOS, deprecated: 2.0, message: "use Mutex from Synchronization module")
 43 | public struct Mutex<Value: ~Copyable>: ~Copyable {
 44 |     let storage: Storage<Value>
    |                  `- error: cannot find type 'Storage' in scope
 45 |
 46 |     public init(_ initialValue: consuming sending Value) {
/host/spi-builder-workspace/Sources/Mutex.swift:47:24: error: cannot find 'Storage' in scope
 45 |
 46 |     public init(_ initialValue: consuming sending Value) {
 47 |         self.storage = Storage(initialValue)
    |                        `- error: cannot find 'Storage' in scope
 48 |     }
 49 |
BUILD FAILURE 6.3 wasm