Swift Package Index

Build Information

Failed to build OpenCombine, reference 0.17.0 (fa6ba5), with Swift 6.4 for Wasm on 1 Oct 2026 00:24:11 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: 5.1.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/OpenSwiftUIProject/OpenCombine.git
Reference: 0.17.0
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/OpenSwiftUIProject/OpenCombine
 * tag               0.17.0     -> FETCH_HEAD
HEAD is now at fa6ba53 Fix throttle demand buffering and emission scheduling (#28)
Cloned https://github.com/OpenSwiftUIProject/OpenCombine.git
Revision (git rev-parse @):
fa6ba53f863bba054a1ef9a6088615d0d34528ab
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/OpenSwiftUIProject/OpenCombine.git at 0.17.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/OpenSwiftUIProject/OpenCombine.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/host -w "$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...
[Pre-planning 1 / 240]
[Planning deferred tasks]
[36 / 68] OpenCombine
[45 / 77] OpenCombine
[53 / 80] OpenCombineShim
[54 / 80] OpenCombineShim
[60 / 82] OpenCombineShim
[67 / 91] OpenCombine
[69 / 91] OpenCombineFoundation
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Sources/OpenCombineFoundation/Helpers/Locking.swift:14:33: error: cannot find type '__UnfairLock' in scope
12 | import OpenCombine
13 |
14 | internal typealias UnfairLock = __UnfairLock
   |                                 `- error: cannot find type '__UnfairLock' in scope
15 | internal typealias UnfairRecursiveLock = __UnfairRecursiveLock
16 |
/host/spi-builder-workspace/Sources/OpenCombineFoundation/Helpers/Locking.swift:15:42: error: cannot find type '__UnfairRecursiveLock' in scope
13 |
14 | internal typealias UnfairLock = __UnfairLock
15 | internal typealias UnfairRecursiveLock = __UnfairRecursiveLock
   |                                          `- error: cannot find type '__UnfairRecursiveLock' in scope
16 |
/host/spi-builder-workspace/Sources/OpenCombineFoundation/OperationQueue+Scheduler.swift:11:11: error: cannot find type 'OperationQueue' in scope
  9 | import OpenCombine
 10 |
 11 | extension OperationQueue {
    |           `- error: cannot find type 'OperationQueue' in scope
 12 |
 13 |     /// A namespace for disambiguation when both OpenCombine and Combine are imported.
/host/spi-builder-workspace/Sources/OpenCombineFoundation/OperationQueue+Scheduler.swift:361:11: error: cannot find type 'OperationQueue' in scope
359 |
360 | #if !canImport(Combine)
361 | extension OperationQueue: OpenCombine.Scheduler {
    |           `- error: cannot find type 'OperationQueue' in scope
362 |
363 |     /// Options that affect the operation of the run loop scheduler.
/host/spi-builder-workspace/Sources/OpenCombineFoundation/URLSession.swift:16:1: error: non-nominal type 'URLSession' (aka 'AnyObject') cannot be extended [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/nominal-types\NominalTypes]8;;\]
 14 | import OpenCombine
 15 |
 16 | extension URLSession {
    | `- error: non-nominal type 'URLSession' (aka 'AnyObject') cannot be extended [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/nominal-types\NominalTypes]8;;\]
 17 |
 18 |     /// A namespace for disambiguation when both OpenCombine and Foundation are imported.
/host/spi-builder-workspace/Sources/OpenCombineFoundation/URLSession.swift:91:1: error: non-nominal type 'URLSession' (aka 'AnyObject') cannot be extended [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/nominal-types\NominalTypes]8;;\]
 89 | }
 90 |
 91 | extension URLSession {
    | `- error: non-nominal type 'URLSession' (aka 'AnyObject') cannot be extended [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/nominal-types\NominalTypes]8;;\]
 92 |
 93 |     /// A namespace for disambiguation when both OpenCombine and Foundation are imported.
/host/spi-builder-workspace/Sources/OpenCombineFoundation/URLSession.swift:133:22: error: 'OCombine' is not a member type of type 'Foundation.URLSession' (aka 'AnyObject')
131 | }
132 |
133 | extension URLSession.OCombine.DataTaskPublisher {
    |                      `- error: 'OCombine' is not a member type of type 'Foundation.URLSession' (aka 'AnyObject')
134 |     private class Inner<Downstream: Subscriber>
135 |         : Subscription,
[#NominalTypes]: <https://docs.swift.org/compiler/documentation/diagnostics/nominal-types>
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/OpenCombineFoundation/Helpers/Locking.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/Helpers/Portability.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/Helpers/Utils.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/Helpers/Violations.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/JSONEncoder.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/NotificationCenter.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/OperationQueue+Scheduler.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/PropertyListEncoder.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/Publishers+KeyValueObserving.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/RunLoop+Scheduler.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/Timer+Publisher.swift /host/spi-builder-workspace/Sources/OpenCombineFoundation/URLSession.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 5 -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/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name OpenCombineFoundation -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/Objects-normal/wasm32/OpenCombineFoundation_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/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/Objects-normal/wasm32/Modules/OpenCombineFoundation.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/Objects-normal/wasm32/Modules/OpenCombineFoundation.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/Objects-normal/wasm32/OpenCombineFoundation-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/Objects-normal/wasm32/OpenCombineFoundation-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/Objects-normal/wasm32/OpenCombineFoundation-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/OpenCombine.build/Debug-webassembly-wasm32/OpenCombineFoundation-t.build/Objects-normal/wasm32/Modules/OpenCombineFoundation.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm