wren-swift – Build Information – Swift Package Index

Build Information

Failed to build wren-swift, reference 0.1.0 (8c5fab), with Swift 6.4 for Android on 18 Sep 2026 10:22:19 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886769-1":/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:android-6.4-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/helje5/wren-swift.git
Reference: 0.1.0
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/helje5/wren-swift
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at 8c5fab5 Merge branch 'develop' into main
Cloned https://github.com/helje5/wren-swift.git
Revision (git rev-parse @):
8c5fab5bca54d28e920ac7bec79fe1a901b20758
SUCCESS checkout https://github.com/helje5/wren-swift.git at 0.1.0
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/helje5/wren-swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:android-6.4-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1
android-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:abadcff584c273feba50641b454858d377ba30b35ea7287a94f45ebd8afd0ea0
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:android-6.4-latest
Building for debugging...
[Pre-planning 1 / 125]
[25 / 35] Wren
[33 / 44] Wren
[34 / 44] CWren
[37 / 44] Wren
[41 / 44] Wren
error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/Wren/Callbacks.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile Callbacks.swift
error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/Wren/Configuration.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile Configuration.swift
/host/spi-builder-workspace/Sources/Wren/Callbacks.swift:27:15: [1;31merror: [1;39mcannot find 'strlen' in scope[0;0m
[0;36m25 |[0;0m   let data : Data = {
[0;36m26 |[0;0m     guard let text = text else { return Data() }
[0;36m27 |[0;0m     let len = [4;39mstrlen[0;0m(text) // yes, this one is 0-terminated
   [0;36m|[0;0m               `- [1;31merror: [1;39mcannot find 'strlen' in scope[0;0m
[0;36m28 |[0;0m     let bp  = UnsafeBufferPointer(start: text, count: len)
[0;36m29 |[0;0m     return Data(buffer: bp)
/host/spi-builder-workspace/Sources/Wren/Configuration.swift:35:28: [1;31merror: [1;39mvalue of optional type 'UnsafePointer<UInt8>?' must be unwrapped to a value of type 'UnsafePointer<UInt8>'[0;0m
[0;36m33 |[0;0m       else {
[0;36m34 |[0;0m         let ok : Int = data.withContiguousStorageIfAvailable({ bp in
[0;36m35 |[0;0m           return fwrite(bp.baseAddress, bp.count, 1, stdout)
   [0;36m|[0;0m                            |- [1;31merror: [1;39mvalue of optional type 'UnsafePointer<UInt8>?' must be unwrapped to a value of type 'UnsafePointer<UInt8>'[0;0m
   [0;36m|[0;0m                            |- [1;39mnote: [1;39mcoalesce using '??' to provide a default when the optional value contains 'nil'[0;0m
   [0;36m|[0;0m                            `- [1;39mnote: [1;39mforce-unwrap using '!' to abort execution if the optional value contains 'nil'[0;0m
[0;36m36 |[0;0m         })
[0;36m37 |[0;0m         ?? data.withUnsafeBytes({ ( rbp: UnsafeRawBufferPointer ) in
/host/spi-builder-workspace/Sources/Wren/Configuration.swift:38:29: [1;31merror: [1;39mvalue of optional type 'UnsafeRawPointer?' must be unwrapped to a value of type 'UnsafeRawPointer'[0;0m
[0;36m36 |[0;0m         })
[0;36m37 |[0;0m         ?? data.withUnsafeBytes({ ( rbp: UnsafeRawBufferPointer ) in
[0;36m38 |[0;0m           return fwrite(rbp.baseAddress, rbp.count, 1, stdout)
   [0;36m|[0;0m                             |- [1;31merror: [1;39mvalue of optional type 'UnsafeRawPointer?' must be unwrapped to a value of type 'UnsafeRawPointer'[0;0m
   [0;36m|[0;0m                             |- [1;39mnote: [1;39mcoalesce using '??' to provide a default when the optional value contains 'nil'[0;0m
   [0;36m|[0;0m                             `- [1;39mnote: [1;39mforce-unwrap using '!' to abort execution if the optional value contains 'nil'[0;0m
[0;36m39 |[0;0m         })
[0;36m40 |[0;0m         assert(ok == 1)
Failed frontend command:
/root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/bin/swift-frontend -frontend -c -primary-file /host/spi-builder-workspace/Sources/Wren/Callbacks.swift -primary-file /host/spi-builder-workspace/Sources/Wren/Configuration.swift /host/spi-builder-workspace/Sources/Wren/Dynamic.swift /host/spi-builder-workspace/Sources/Wren/Error.swift /host/spi-builder-workspace/Sources/Wren/Foreign.swift /host/spi-builder-workspace/Sources/Wren/Handle.swift /host/spi-builder-workspace/Sources/Wren/Slots.swift /host/spi-builder-workspace/Sources/Wren/ValueConvertible.swift /host/spi-builder-workspace/Sources/Wren/Values.swift /host/spi-builder-workspace/Sources/Wren/WrenVM.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Callbacks.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Callbacks.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Callbacks.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Callbacks.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Configuration.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Configuration.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Configuration.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Configuration.dia -target aarch64-unknown-linux-android28 -Xllvm -aarch64-use-tbi -disable-objc-interop -sdk /android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/sysroot -sysroot /android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/sysroot -I /host/spi-builder-workspace/.build/out/Products/Debug-android-aarch64 -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 /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/lib/swift/host/plugins/testing\#/root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/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_android.artifactbundle/swift-android/swift-resources/usr/lib/swift-aarch64 -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/18 -Xcc -fmodule-map-file\=/host/spi-builder-workspace/.build/out/Intermediates.noindex/GeneratedModuleMaps-android-aarch64/CWren.modulemap -Xcc -fno-omit-frame-pointer -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/Sources/CWren/include -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-android-aarch64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Wren -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Wren_const_extract_protocols.json -in-process-plugin-server-path /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/lib/swift/host/plugins -plugin-path /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/local/lib/swift/host/plugins -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Callbacks.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Configuration.o -index-unit-output-path /wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Callbacks.o -index-unit-output-path /wren-swift.build/Debug-android-aarch64/Wren-t.build/Objects-normal/aarch64/Configuration.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 android