Swift Package Index

Build Information

Failed to build Promises, reference 2.0.4 (7de014), with Swift 6.4 for Wasm on 16 Sep 2026 03:31:03 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/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-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/khanlou/Promise.git
Reference: 2.0.4
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/khanlou/Promise
 * tag               2.0.4      -> FETCH_HEAD
HEAD is now at 7de0149 update to version 2.0.4
Cloned https://github.com/khanlou/Promise.git
Revision (git rev-parse @):
7de01494163478adb1aa83740914a4ca29059169
SUCCESS checkout https://github.com/khanlou/Promise.git at 2.0.4
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/khanlou/Promise.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Building for debugging...
[Planning deferred tasks]
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Promise/Promise+Extras.swift:144:53: error: cannot find 'DispatchQueue' in scope
142 |
143 |     @discardableResult
144 |     public func always(on queue: ExecutionContext = DispatchQueue.main, _ onComplete: @escaping () -> Void) -> Promise<Value> {
    |                                                     `- error: cannot find 'DispatchQueue' in scope
145 |         return then(on: queue, { _ in
146 |             onComplete()
/host/spi-builder-workspace/Promise/Promise.swift:18:11: error: cannot find type 'DispatchQueue' in scope
 16 | }
 17 |
 18 | extension DispatchQueue: ExecutionContext {
    |           `- error: cannot find type 'DispatchQueue' in scope
 19 |
 20 |     public func execute(_ work: @escaping () -> Void) {
/host/spi-builder-workspace/Promise/Promise.swift:29:24: error: cannot find type 'DispatchQueue' in scope
 27 |     private var valid = true
 28 |
 29 |     private var queue: DispatchQueue
    |                        `- error: cannot find type 'DispatchQueue' in scope
 30 |
 31 |     public init(queue: DispatchQueue = .main) {
/host/spi-builder-workspace/Promise/Promise.swift:31:24: error: cannot find type 'DispatchQueue' in scope
 29 |     private var queue: DispatchQueue
 30 |
 31 |     public init(queue: DispatchQueue = .main) {
    |                        `- error: cannot find type 'DispatchQueue' in scope
 32 |         self.queue = queue
 33 |     }
/host/spi-builder-workspace/Promise/Promise.swift:136:29: error: cannot find 'DispatchQueue' in scope
134 |
135 |     private var state: State<Value>
136 |     private let lockQueue = DispatchQueue(label: "promise_lock_queue", qos: .userInitiated)
    |                             `- error: cannot find 'DispatchQueue' in scope
137 |
138 |     public init() {
/host/spi-builder-workspace/Promise/Promise.swift:150:36: error: cannot find type 'DispatchQueue' in scope
148 |     }
149 |
150 |     public convenience init(queue: DispatchQueue = DispatchQueue.global(qos: .userInitiated), work: @escaping (_ fulfill: @escaping (Value) -> Void, _ reject: @escaping (Error) -> Void) throws -> Void) {
    |                                    `- error: cannot find type 'DispatchQueue' in scope
151 |         self.init()
152 |         queue.async(execute: {
/host/spi-builder-workspace/Promise/Promise.swift:163:61: error: cannot find 'DispatchQueue' in scope
161 |     /// - note: This one is "flatMap"
162 |     @discardableResult
163 |     public func then<NewValue>(on queue: ExecutionContext = DispatchQueue.main, _ onFulfilled: @escaping (Value) throws -> Promise<NewValue>) -> Promise<NewValue> {
    |                                                             `- error: cannot find 'DispatchQueue' in scope
164 |         return Promise<NewValue>(work: { fulfill, reject in
165 |             self.addCallbacks(
/host/spi-builder-workspace/Promise/Promise.swift:181:61: error: cannot find 'DispatchQueue' in scope
179 |     /// - note: This one is "map"
180 |     @discardableResult
181 |     public func then<NewValue>(on queue: ExecutionContext = DispatchQueue.main, _ onFulfilled: @escaping (Value) throws -> NewValue) -> Promise<NewValue> {
    |                                                             `- error: cannot find 'DispatchQueue' in scope
182 |         return then(on: queue, { (value) -> Promise<NewValue> in
183 |             do {
/host/spi-builder-workspace/Promise/Promise.swift:192:51: error: cannot find 'DispatchQueue' in scope
190 |
191 |     @discardableResult
192 |     public func then(on queue: ExecutionContext = DispatchQueue.main, _ onFulfilled: @escaping (Value) -> Void, _ onRejected: @escaping (Error) -> Void = { _ in }) -> Promise<Value> {
    |                                                   `- error: cannot find 'DispatchQueue' in scope
193 |         addCallbacks(on: queue, onFulfilled: onFulfilled, onRejected: onRejected)
194 |         return self
/host/spi-builder-workspace/Promise/Promise.swift:198:54: error: cannot find 'DispatchQueue' in scope
196 |
197 |     @discardableResult
198 |     public func `catch`(on queue: ExecutionContext = DispatchQueue.main, _ onRejected: @escaping (Error) -> Void) -> Promise<Value> {
    |                                                      `- error: cannot find 'DispatchQueue' in scope
199 |         return then(on: queue, { _ in }, onRejected)
200 |     }
/host/spi-builder-workspace/Promise/Promise.swift:242:60: error: cannot find 'DispatchQueue' in scope
240 |     }
241 |
242 |     private func addCallbacks(on queue: ExecutionContext = DispatchQueue.main, onFulfilled: @escaping (Value) -> Void, onRejected: @escaping (Error) -> Void) {
    |                                                            `- error: cannot find 'DispatchQueue' in scope
243 |         let callback = Callback(onFulfilled: onFulfilled, onRejected: onRejected, executionContext: queue)
244 |         lockQueue.async(flags: .barrier, execute: {
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Promise/Promise+Extras.swift /host/spi-builder-workspace/Promise/Promise.swift -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -module-cache-path /host/spi-builder-workspace/.build/out/ModuleCache.noindex -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -validate-clang-modules-once -clang-build-session-file /host/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /host -resource-dir /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Promise -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/Objects-normal/wasm32/Promise_const_extract_protocols.json -in-process-plugin-server-path /usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/Objects-normal/wasm32/Modules/Promise.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/Objects-normal/wasm32/Modules/Promise.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/Objects-normal/wasm32/Promise-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/Objects-normal/wasm32/Promise-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/Objects-normal/wasm32/Promise-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Promises.build/Debug-webassembly-wasm32/Promise-t.build/Objects-normal/wasm32/Modules/Promise.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm