Swift Package IndexBuild Information
Failed to build ThreadSafeSwift, reference 1.1.0 (1a25ee), with Swift 6.3 for Wasm on 22 Apr 2026 11:13:33 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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>&1Build Log
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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/Flowduino/ThreadSafeSwift.git
Reference: 1.1.0
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/Flowduino/ThreadSafeSwift
* tag 1.1.0 -> FETCH_HEAD
HEAD is now at 1a25ee0 1.1.0 Release
Cloned https://github.com/Flowduino/ThreadSafeSwift.git
Revision (git rev-parse @):
1a25ee0eea2d74922f34da271347076772d42fc1
SUCCESS checkout https://github.com/Flowduino/ThreadSafeSwift.git at 1.1.0
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/Flowduino/ThreadSafeSwift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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)
[3/4] Emitting module ThreadSafeSwift
/host/spi-builder-workspace/Sources/ThreadSafeSwift/ThreadSafeSemaphore.swift:17:23: error: cannot find 'DispatchSemaphore' in scope
15 | @propertyWrapper
16 | public struct ThreadSafeSemaphore<T> {
17 | public var lock = DispatchSemaphore(value: 1)
| `- error: cannot find 'DispatchSemaphore' in scope
18 | private var value: T
19 |
[4/4] Compiling ThreadSafeSwift ThreadSafeSemaphore.swift
/host/spi-builder-workspace/Sources/ThreadSafeSwift/ThreadSafeSemaphore.swift:17:23: error: cannot find 'DispatchSemaphore' in scope
15 | @propertyWrapper
16 | public struct ThreadSafeSemaphore<T> {
17 | public var lock = DispatchSemaphore(value: 1)
| `- error: cannot find 'DispatchSemaphore' in scope
18 | private var value: T
19 |
/host/spi-builder-workspace/Sources/ThreadSafeSwift/ThreadSafeSemaphore.swift:52:31: error: cannot find 'DispatchTime' in scope
50 | */
51 | mutating public func withTryLock(_ onLock: @escaping (_ value: inout T) -> (), _ onCannotLock: @escaping ()->()) {
52 | if lock.wait(timeout: DispatchTime.now()) == .success { // If we are able to acquire the lock...
| `- error: cannot find 'DispatchTime' in scope
53 | onLock(&value) // Invoke the closure within the lock
54 | lock.signal() // Release the Lock
BUILD FAILURE 6.3 wasm