Stubby – Build Information – Swift Package Index

Build Information

Failed to build Stubby, reference main (888b26), with Swift 6.4 for Wasm on 19 Sep 2026 17:33:08 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/bdbergeron/Stubby.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/bdbergeron/Stubby
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 888b26e Update to Swift 6, iOS 16, macOS 13 and improve concurrency safety (#15)
Cloned https://github.com/bdbergeron/Stubby.git
Revision (git rev-parse @):
888b26e2b4dac4731b6c23102480daf3a7ba2241
SUCCESS checkout https://github.com/bdbergeron/Stubby.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/bdbergeron/Stubby.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$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/swiftlang/swift-docc-plugin
Fetching https://github.com/pointfreeco/swift-macro-testing
Fetching https://github.com/swiftlang/swift-syntax
[1/1002] Fetching swift-macro-testing
[302/3347] Fetching swift-macro-testing, swift-docc-plugin
[3348/83331] Fetching swift-macro-testing, swift-docc-plugin, swift-syntax
Fetched https://github.com/pointfreeco/swift-macro-testing (2.90s)
Fetched https://github.com/swiftlang/swift-docc-plugin (2.90s)
Fetched https://github.com/swiftlang/swift-syntax (2.92s)
Computing version for https://github.com/swiftlang/swift-docc-plugin
Computed https://github.com/swiftlang/swift-docc-plugin at 1.5.0 (4.01s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3824] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit (0.58s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.82s)
Computing version for https://github.com/pointfreeco/swift-macro-testing
Computed https://github.com/pointfreeco/swift-macro-testing at 0.7.0 (0.17s)
Fetching https://github.com/pointfreeco/swift-snapshot-testing
[1/16416] Fetching swift-snapshot-testing
Fetched https://github.com/pointfreeco/swift-snapshot-testing (2.22s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 602.0.0 (2.55s)
Computing version for https://github.com/pointfreeco/swift-snapshot-testing
Computed https://github.com/pointfreeco/swift-snapshot-testing at 1.19.5 (0.18s)
Fetching https://github.com/pointfreeco/swift-custom-dump
[1/5655] Fetching swift-custom-dump
Fetched https://github.com/pointfreeco/swift-custom-dump (0.96s)
Computing version for https://github.com/pointfreeco/swift-custom-dump
Computed https://github.com/pointfreeco/swift-custom-dump at 1.7.3 (1.16s)
Fetching https://github.com/pointfreeco/swift-issue-reporting
[1/6136] Fetching swift-issue-reporting
Fetched https://github.com/pointfreeco/swift-issue-reporting (0.74s)
Computing version for https://github.com/pointfreeco/swift-issue-reporting
Computed https://github.com/pointfreeco/swift-issue-reporting at 2.1.0 (1.85s)
Creating working copy for https://github.com/pointfreeco/swift-macro-testing
Working copy of https://github.com/pointfreeco/swift-macro-testing resolved at 0.7.0
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 602.0.0
Creating working copy for https://github.com/pointfreeco/swift-snapshot-testing
Working copy of https://github.com/pointfreeco/swift-snapshot-testing resolved at 1.19.5
Creating working copy for https://github.com/pointfreeco/swift-issue-reporting
Working copy of https://github.com/pointfreeco/swift-issue-reporting resolved at 2.1.0
Creating working copy for https://github.com/swiftlang/swift-docc-plugin
Working copy of https://github.com/swiftlang/swift-docc-plugin resolved at 1.5.0
Creating working copy for https://github.com/pointfreeco/swift-custom-dump
Working copy of https://github.com/pointfreeco/swift-custom-dump resolved at 1.7.3
Building for debugging...
[Computing dependencies]
[Constructing description]
[Pre-planning 1 / 649]
[Planning deferred tasks]
[139 / 282] SwiftSyntax510
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Sources/Stubby/URLSession+Stubbed.swift:4:8: [1;31merror: [1;39mno such module 'os'[0;0m
  [0;36m2 |[0;0m
  [0;36m3 |[0;0m import Foundation
  [0;36m4 |[0;0m import os
    [0;36m|[0;0m        `- [1;31merror: [1;39mno such module 'os'[0;0m
  [0;36m5 |[0;0m
  [0;36m6 |[0;0m extension URLSession {
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/Stubby/StubbyResponse.swift /host/spi-builder-workspace/Sources/Stubby/StubbyURLProtocol.swift /host/spi-builder-workspace/Sources/Stubby/URLSession+Stubbed.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 6 -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/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Stubby -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/Objects-normal/wasm32/Stubby_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/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/Objects-normal/wasm32/Modules/Stubby.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/Objects-normal/wasm32/Modules/Stubby.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/Objects-normal/wasm32/Stubby-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/Objects-normal/wasm32/Stubby-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/Objects-normal/wasm32/Stubby-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Stubby.build/Debug-webassembly-wasm32/Stubby-t.build/Objects-normal/wasm32/Modules/Stubby.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm