Swift Package Index

Build Information

Failed to build OpenCombineJS, reference main (e393e6), with Swift 6.4 for Wasm on 18 Sep 2026 06:28:31 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/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/swiftwasm/OpenCombineJS.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/swiftwasm/OpenCombineJS
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at e393e6d Update to v2 of Contributor Covenant in shared GitHub repo (#7)
Cloned https://github.com/swiftwasm/OpenCombineJS.git
Revision (git rev-parse @):
e393e6d449511615ea5445b04f4b97dc6e5fb141
SUCCESS checkout https://github.com/swiftwasm/OpenCombineJS.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/swiftwasm/OpenCombineJS.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$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
Fetching https://github.com/OpenCombine/OpenCombine.git
Fetching https://github.com/swiftwasm/JavaScriptKit.git
[1/8284] Fetching opencombine
Fetched https://github.com/OpenCombine/OpenCombine.git (0.69s)
[1/40763] Fetching javascriptkit
Fetched https://github.com/swiftwasm/JavaScriptKit.git (2.38s)
Computing version for https://github.com/OpenCombine/OpenCombine.git
Computed https://github.com/OpenCombine/OpenCombine.git at 0.14.0 (2.64s)
Computing version for https://github.com/swiftwasm/JavaScriptKit.git
Computed https://github.com/swiftwasm/JavaScriptKit.git at 0.59.0 (0.26s)
Fetching https://github.com/swiftlang/swift-syntax
[1/79951] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax (2.90s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 603.0.2 (3.24s)
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 603.0.2
Creating working copy for https://github.com/OpenCombine/OpenCombine.git
Working copy of https://github.com/OpenCombine/OpenCombine.git resolved at 0.14.0
Creating working copy for https://github.com/swiftwasm/JavaScriptKit.git
Working copy of https://github.com/swiftwasm/JavaScriptKit.git resolved at 0.59.0
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 768]
[Planning deferred tasks]
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[199 / 330] OpenCombine
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[467 / 485] JavaScriptKit
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/OpenCombineJS/JSPromise.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile JSPromise.swift
/host/spi-builder-workspace/Sources/OpenCombineJS/JSPromise.swift:24:25: error: type 'JSValue' does not conform to protocol 'Error'
22 |
23 |     /// `Future` instance that handles subscriptions to this publisher.
24 |     private var future: Future<JSValue, JSValue>
   |                         `- error: type 'JSValue' does not conform to protocol 'Error'
25 |
26 |     fileprivate init(promise: JSPromise) {
/host/spi-builder-workspace/Sources/OpenCombineJS/JSPromise.swift:38:17: error: no type for 'Downstream.Failure' can satisfy both 'Downstream.Failure == JSValue' and 'Downstream.Failure : Error'
36 |     }
37 |
38 |     public func receive<Downstream: Subscriber>(subscriber: Downstream)
   |                 `- error: no type for 'Downstream.Failure' can satisfy both 'Downstream.Failure == JSValue' and 'Downstream.Failure : Error'
39 |       where Downstream.Input == JSValue, Downstream.Failure == JSValue
40 |     {
/host/spi-builder-workspace/Sources/OpenCombineJS/JSPromise.swift:19:15: error: type 'JSPromise.PromisePublisher' does not conform to protocol 'Publisher'
17 |
18 | public extension JSPromise {
19 |   final class PromisePublisher: Publisher {
   |               |- error: type 'JSPromise.PromisePublisher' does not conform to protocol 'Publisher'
   |               `- note: add stubs for conformance
20 |     public typealias Output = JSValue
21 |     public typealias Failure = JSValue
   |                      `- note: possibly intended match 'JSPromise.PromisePublisher.Failure' (aka 'JSValue') does not conform to 'Error'
22 |
23 |     /// `Future` instance that handles subscriptions to this publisher.
   :
36 |     }
37 |
38 |     public func receive<Downstream: Subscriber>(subscriber: Downstream)
   |                 `- note: candidate has non-matching type '<Downstream> (subscriber: Downstream) -> ()' [with Failure = _]
39 |       where Downstream.Input == JSValue, Downstream.Failure == JSValue
40 |     {
/host/spi-builder-workspace/.build/checkouts/OpenCombine/Sources/OpenCombine/GENERATED-RootProtocols.swift:59:20: note: protocol requires nested type 'Failure'
 57 |     ///
 58 |     /// Use `Never` if this `Publisher` does not publish errors.
 59 |     associatedtype Failure: Error
    |                    `- note: protocol requires nested type 'Failure'
 60 |
 61 |     /// Attaches the specified subscriber to this publisher.
    :
 68 |     /// - Parameter subscriber: The subscriber to attach to this publisher. After
 69 |     ///   attaching, the subscriber can start to receive values.
 70 |     func receive<Subscriber: OpenCombine.Subscriber>(subscriber: Subscriber)
    |          `- note: protocol requires function 'receive(subscriber:)' with type '<Subscriber> (subscriber: Subscriber) -> ()'
 71 |         where Failure == Subscriber.Failure, Output == Subscriber.Input
 72 | }
/host/spi-builder-workspace/Sources/OpenCombineJS/JSPromise.swift:27:17: error: cannot infer contextual base in reference to member 'init'
25 |
26 |     fileprivate init(promise: JSPromise) {
27 |       future = .init { resolver in
   |                 `- error: cannot infer contextual base in reference to member 'init'
28 |         promise.then(success: {
29 |           resolver(.success($0))
Failed frontend command:
/usr/bin/swift-frontend -frontend -c -primary-file /host/spi-builder-workspace/Sources/OpenCombineJS/JSPromise.swift /host/spi-builder-workspace/Sources/OpenCombineJS/JSScheduler.swift /host/spi-builder-workspace/Sources/OpenCombineJS/JSValueDecoder.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/Objects-normal/wasm32/JSPromise.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/Objects-normal/wasm32/JSPromise.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/Objects-normal/wasm32/JSPromise.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/Objects-normal/wasm32/JSPromise.dia -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 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -load-plugin-executable /host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64/BridgeJSMacros\#BridgeJSMacros -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 -fmodule-map-file\=/host/spi-builder-workspace/.build/checkouts/JavaScriptKit/Sources/_CJavaScriptKit/include/module.modulemap -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/checkouts/JavaScriptKit/Sources/_CJavaScriptKit/include -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name OpenCombineJS -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/Objects-normal/wasm32/OpenCombineJS_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 -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/Objects-normal/wasm32/JSPromise.o -index-unit-output-path /OpenCombineJS.build/Debug-webassembly-wasm32/OpenCombineJS-t.build/Objects-normal/wasm32/JSPromise.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm