ReadingTime – Build Information – Swift Package Index

Build Information

Failed to build ReadingTime, reference main (5628a8), with Swift 6.4 for Android on 18 Sep 2026 23:23:41 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/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: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/polpielladev/reading-time.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/polpielladev/reading-time
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 5628a8d Finishes release workflow
Cloned https://github.com/polpielladev/reading-time.git
Revision (git rev-parse @):
5628a8d6ef39bb9e9f2c739fa70b684a7e5e4756
SUCCESS checkout https://github.com/polpielladev/reading-time.git at main
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/polpielladev/reading-time.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images: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/apple/swift-markdown.git
[1/7729] Fetching swift-markdown
Fetched https://github.com/apple/swift-markdown.git (0.67s)
Fetching https://github.com/swiftlang/swift-cmark.git
[1/18598] Fetching swift-cmark
Fetched https://github.com/swiftlang/swift-cmark.git (0.86s)
Fetching https://github.com/apple/swift-argument-parser
[1/18918] Fetching swift-argument-parser
Fetched https://github.com/apple/swift-argument-parser (0.83s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.8.2 (1.03s)
Creating working copy for https://github.com/swiftlang/swift-cmark.git
Working copy of https://github.com/swiftlang/swift-cmark.git resolved at gfm (0c8947b)
Creating working copy for https://github.com/apple/swift-markdown.git
Working copy of https://github.com/apple/swift-markdown.git resolved at main (75e3df1)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.8.2
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 305]
[Planning deferred tasks]
[56 / 122] cmark-gfm-extensions
[65 / 122] cmark-gfm
[70 / 122] cmark-gfm
[75 / 122] cmark-gfm
[81 / 122] cmark-gfm
[86 / 123]
[91 / 126] CAtomic
[91 / 126] cmark-gfm
[98 / 135] cmark-gfm
[105 / 135] Markdown
[108 / 135] Markdown
[115 / 139] cmark-gfm-extensions
[117 / 139] ReadingTime
[122 / 140] ArgumentParser
[123 / 149] ReadingTime-product
[125 / 150] ArgumentParserToolInfo
[130 / 150] ArgumentParser
[134 / 150] ArgumentParser
error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/ReadingTime/ReadingTime.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile ReadingTime.swift
/host/spi-builder-workspace/Sources/ReadingTime/ReadingTime.swift:37:58: [1;31merror: [1;39m'byWords' is unavailable: Enumeration by words isn't supported in swift-corelibs-foundation[0;0m
[0;36m35 |[0;0m         var count = 0
[0;36m36 |[0;0m         let range = string.startIndex..<string.endIndex
[0;36m37 |[0;0m         string.enumerateSubstrings(in: range, options: [.[4;39mbyWords[0;0m, .substringNotRequired, .localized], { _, _, _, _ -> () in
   [0;36m|[0;0m                                                          `- [1;31merror: [1;39m'byWords' is unavailable: Enumeration by words isn't supported in swift-corelibs-foundation[0;0m
[0;36m38 |[0;0m             count += 1
[0;36m39 |[0;0m         })
Foundation.NSString.EnumerationOptions.byWords:4:23: [1;39mnote: [1;39m'byWords' has been explicitly marked unavailable here[0;0m
[0;36m2 |[0;0m   struct EnumerationOptions {
[0;36m3 |[0;0m @available(*, unavailable, message: "Enumeration by words isn't supported in swift-corelibs-foundation")
[0;36m4 |[0;0m     public static let byWords: NSString.EnumerationOptions  }
  [0;36m|[0;0m                       `- [1;39mnote: [1;39m'byWords' has been explicitly marked unavailable here[0;0m
[0;36m5 |[0;0m }
[0;36m6 |[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/ReadingTime/MarkdownRewriter.swift -primary-file /host/spi-builder-workspace/Sources/ReadingTime/ReadingTime.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/Objects-normal/aarch64/ReadingTime.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/Objects-normal/aarch64/ReadingTime.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/Objects-normal/aarch64/ReadingTime.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/Objects-normal/aarch64/ReadingTime.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/checkouts/swift-cmark/src/include/module.modulemap -Xcc -fmodule-map-file\=/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/include/module.modulemap -Xcc -fmodule-map-file\=/host/spi-builder-workspace/.build/checkouts/swift-markdown/Sources/CAtomic/include/module.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/swift-cmark/src/include -Xcc -I/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/include -Xcc -I/host/spi-builder-workspace/.build/checkouts/swift-markdown/Sources/CAtomic/include -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-android-aarch64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name ReadingTime -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/Objects-normal/aarch64/ReadingTime_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/ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/Objects-normal/aarch64/ReadingTime.o -index-unit-output-path /ReadingTime.build/Debug-android-aarch64/ReadingTime-t.build/Objects-normal/aarch64/ReadingTime.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 android