Swift Package Index

Build Information

Failed to build modbus2mqtt, reference main (287341), with Swift 6.4 for Android on 30 Sep 2026 23:03:53 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344845-2":/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: 5.1.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/jollyjinx/modbus-2-mqtt-bridge.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/jollyjinx/modbus-2-mqtt-bridge
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 287341d Correct NIBE S2125 register definitions and metadata
Cloned https://github.com/jollyjinx/modbus-2-mqtt-bridge.git
Revision (git rev-parse @):
287341deb79b5027ff533e4275cdc7e506bc743e
SUCCESS checkout https://github.com/jollyjinx/modbus-2-mqtt-bridge.git at main
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/jollyjinx/modbus-2-mqtt-bridge.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344845-2":/host -w "$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
Fetching https://github.com/jollyjinx/mqtt-nio.git
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Building for debugging...
[Computing dependencies]
[Constructing description]
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[Starting]
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error: SwiftCompile normal aarch64 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/.build/checkouts/SwiftLibModbus/Sources/SwiftLibModbus/ModbusDevice.swift:127:63: error: cannot find 'errno' in scope
125 |         else
126 |         {
127 |             let errorString = String(cString: modbus_strerror(errno))
    |                                                               `- error: cannot find 'errno' in scope
128 |             modbus_free(modbusdevice)
129 |             throw ModbusError.couldNotCreateDevice(error: "Could not configure response timeout: \(errorString)")
/android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/errno.h:58:9: note: macro 'errno' unavailable: structure not supported
56 |  * thread.
57 |  */
58 | #define errno (*__errno())
   |         `- note: macro 'errno' unavailable: structure not supported
59 |
60 | __END_DECLS
/host/spi-builder-workspace/.build/checkouts/SwiftLibModbus/Sources/SwiftLibModbus/ModbusDevice.swift:166:63: error: cannot find 'errno' in scope
164 |         else
165 |         {
166 |             let errorString = String(cString: modbus_strerror(errno))
    |                                                               `- error: cannot find 'errno' in scope
167 |             throw ModbusError.couldNotCreateDevice(error: "Could not create TCP device for \(networkAddress):\(port): \(errorString)")
168 |         }
/android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/errno.h:58:9: note: macro 'errno' unavailable: structure not supported
56 |  * thread.
57 |  */
58 | #define errno (*__errno())
   |         `- note: macro 'errno' unavailable: structure not supported
59 |
60 | __END_DECLS
/host/spi-builder-workspace/.build/checkouts/SwiftLibModbus/Sources/SwiftLibModbus/ModbusDevice.swift:173:63: error: cannot find 'errno' in scope
171 |         else
172 |         {
173 |             let errorString = String(cString: modbus_strerror(errno))
    |                                                               `- error: cannot find 'errno' in scope
174 |             modbus_free(device)
175 |             throw ModbusError.couldNotCreateDevice(error: "Could not configure response timeout: \(errorString)")
/android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/errno.h:58:9: note: macro 'errno' unavailable: structure not supported
56 |  * thread.
57 |  */
58 | #define errno (*__errno())
   |         `- note: macro 'errno' unavailable: structure not supported
59 |
60 | __END_DECLS
Failed frontend command:
/root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/.build/checkouts/SwiftLibModbus/Sources/SwiftLibModbus/ModbusDevice.swift -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 -suppress-warnings -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature StrictConcurrency -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 -user-module-version 3.1.0 -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/CModbus.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/.build/checkouts/SwiftLibModbus/Sources/CModbus/include -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-android-aarch64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SwiftLibModbus -package-name swiftlibmodbus -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/Objects-normal/aarch64/SwiftLibModbus_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 -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/Objects-normal/aarch64/Modules/SwiftLibModbus.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/Objects-normal/aarch64/Modules/SwiftLibModbus.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/Objects-normal/aarch64/SwiftLibModbus-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/Objects-normal/aarch64/SwiftLibModbus-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/Objects-normal/aarch64/SwiftLibModbus-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftLibModbus.build/Debug-android-aarch64/SwiftLibModbus-t.build/Objects-normal/aarch64/Modules/SwiftLibModbus.swiftmodule
[305 / 953] SystemPackage
error: Build failed
BUILD FAILURE 6.4 android