METAR – Build Information – Swift Package Index

Build Information

Failed to build METAR, reference main (e1de8a), with Swift 6.4 for Android on 17 Sep 2026 18:15:34 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886770-2":/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: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/JonathanDowning/SwiftMETAR.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/JonathanDowning/SwiftMETAR
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at e1de8aa Update README.md
Cloned https://github.com/JonathanDowning/SwiftMETAR.git
Revision (git rev-parse @):
e1de8aa7493a4a2706c2ace510da47a6e51b556e
SUCCESS checkout https://github.com/JonathanDowning/SwiftMETAR.git at main
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/JonathanDowning/SwiftMETAR.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-2":/host -w "$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
Building for debugging...
[Planning deferred tasks]
[28 / 36] METAR
error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/METAR/METAR+Parsing.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile METAR+Parsing.swift
/host/spi-builder-workspace/Sources/METAR/METAR+Parsing.swift:373:61: [1;31merror: [1;39mambiguous use of 'subscript(_:)'[0;0m
[0;36m371 |[0;0m         for match in metar.matches(for: #"(?<!\S)(?:(?:Q([0-9]{4}))|(?:A([0-9]{4})))\b"#).reversed() {
[0;36m372 |[0;0m             guard let range = match[0] else { continue }
[0;36m373 |[0;0m             let hPa = match[1].flatMap { Double(String(metar[$0])) }.map { Measurement(value: $0, unit: UnitPressure.hectopascals) }
    [0;36m|[0;0m                                                             `- [1;31merror: [1;39mambiguous use of 'subscript(_:)'[0;0m
[0;36m374 |[0;0m             let inHg = match[2].flatMap { Double(String(metar[$0])) }.map { Measurement(value: $0 / 100, unit: UnitPressure.inchesOfMercury) }
[0;36m375 |[0;0m             if qnh?.unit == .inchesOfMercury {
Swift.String.subscript:3:10: [1;39mnote: [1;39mfound this candidate in module 'Swift'[0;0m
[0;36m1 |[0;0m struct String {
[0;36m2 |[0;0m @available(swift 4)
[0;36m3 |[0;0m   public subscript(r: Range<String.Index>) -> Substring { get }}
  [0;36m|[0;0m          `- [1;39mnote: [1;39mfound this candidate in module 'Swift'[0;0m
[0;36m4 |[0;0m
Swift.Collection.subscript:2:19: [1;39mnote: [1;39mfound this candidate in module 'Swift'[0;0m
[0;36m1 |[0;0m protocol Collection {
[0;36m2 |[0;0m @inlinable public subscript<R>(r: R) -> Self.SubSequence where R : RangeExpression, Self.Index == R.Bound { get }}
  [0;36m|[0;0m                   `- [1;39mnote: [1;39mfound this candidate in module 'Swift'[0;0m
[0;36m3 |[0;0m
Failed frontend command:
/root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/METAR/CloudLayer.swift /host/spi-builder-workspace/Sources/METAR/DirectionalVisibility.swift /host/spi-builder-workspace/Sources/METAR/FlightRules.swift /host/spi-builder-workspace/Sources/METAR/METAR+Ceiling.swift /host/spi-builder-workspace/Sources/METAR/METAR+Date.swift -primary-file /host/spi-builder-workspace/Sources/METAR/METAR+FlightRules.swift -primary-file /host/spi-builder-workspace/Sources/METAR/METAR+Parsing.swift /host/spi-builder-workspace/Sources/METAR/METAR+RelativeHumidity.swift /host/spi-builder-workspace/Sources/METAR/METAR.swift /host/spi-builder-workspace/Sources/METAR/MilitaryColorCode.swift /host/spi-builder-workspace/Sources/METAR/RunwayCondition.swift /host/spi-builder-workspace/Sources/METAR/RunwayVisualRange.swift /host/spi-builder-workspace/Sources/METAR/SkyCondition.swift /host/spi-builder-workspace/Sources/METAR/Trend.swift /host/spi-builder-workspace/Sources/METAR/Visibility.swift /host/spi-builder-workspace/Sources/METAR/Weather.swift /host/spi-builder-workspace/Sources/METAR/Wind.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+FlightRules.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+FlightRules.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+FlightRules.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+FlightRules.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+Parsing.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+Parsing.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+Parsing.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+Parsing.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 -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/out/Products/Debug-android-aarch64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name METAR -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR_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/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+FlightRules.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+Parsing.o -index-unit-output-path /METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+FlightRules.o -index-unit-output-path /METAR.build/Debug-android-aarch64/METAR-t.build/Objects-normal/aarch64/METAR+Parsing.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 android