Swift Package Index

Build Information

Failed to build Futura.swift, reference master (1dd68c), with Swift 6.4 for Android on 15 Sep 2026 21:25:31 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344843-0":/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/thedavidharris/Futura.git
Reference: master
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/thedavidharris/Futura
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 1dd68ce Add documentation
Cloned https://github.com/thedavidharris/Futura.git
Revision (git rev-parse @):
1dd68cee8588d15c77dff40e699ee411bc5e1e1e
SUCCESS checkout https://github.com/thedavidharris/Futura.git at master
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/thedavidharris/Futura.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-0":/host -w "$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
Building for debugging...
[Planning deferred tasks]
[28 / 36] Futura
/host/spi-builder-workspace/Sources/Future+Retry.swift:21:23: warning: generic parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
19 |     /// - Returns: existing Future object
20 |     @discardableResult
21 |     public func retry<Value>(attempts: Int, delay delayTime: TimeInterval = 0, retryBody: @escaping () -> Future<Value>) -> Future<Value> {
   |                       `- warning: generic parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
22 |
23 |         var attemptsLeft = attempts
/host/spi-builder-workspace/Sources/Future.swift:45:21: note: 'Value' previously declared here
 43 |
 44 | /// Generic class for a Future
 45 | public class Future<Value>: FutureType {
    |                     `- note: 'Value' previously declared here
 46 |
 47 |     /// Generic value type
/host/spi-builder-workspace/Sources/Future+Variadic.swift:16:28: warning: generic parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
14 |     /// - Parameter futures: an array of futures of the same type
15 |     /// - Returns: a single promise combining the resolved values of `futures`
16 |     public static func all<Value>(_ futures: [Future<Value>]) -> Future<[Value]> {
   |                            `- warning: generic parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
17 |         return Promise<[Value]>{ (fullfill, reject) in
18 |             if futures.isEmpty {
/host/spi-builder-workspace/Sources/Future.swift:45:21: note: 'Value' previously declared here
 43 |
 44 | /// Generic class for a Future
 45 | public class Future<Value>: FutureType {
    |                     `- note: 'Value' previously declared here
 46 |
 47 |     /// Generic value type
/host/spi-builder-workspace/Sources/Future+Variadic.swift:37:28: warning: generic parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
35 |     /// - Parameter futures: an array of futures of the same type
36 |     /// - Returns: a single future combining the resolved values of `futures`
37 |     public static func all<Value>(_ futures: Future<Value>...) -> Future<[Value]> {
   |                            `- warning: generic parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
38 |         return all(futures)
39 |     }
/host/spi-builder-workspace/Sources/Future.swift:45:21: note: 'Value' previously declared here
 43 |
 44 | /// Generic class for a Future
 45 | public class Future<Value>: FutureType {
    |                     `- note: 'Value' previously declared here
 46 |
 47 |     /// Generic value type
[29 / 36] Futura
error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/Future.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile Future.swift
/host/spi-builder-workspace/Sources/Future.swift:86:29: error: cannot convert return expression of type 'Value??' to return type 'Value?'
 84 |     /// Convenience accessor for the associated value of the future
 85 |     public var value: Value? {
 86 |         return try? result?.get()
    |                             |- error: cannot convert return expression of type 'Value??' to return type 'Value?'
    |                             `- note: arguments to generic parameter 'Wrapped' ('Value?' and 'Value') are expected to be equal
 87 |     }
 88 |
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/Callback.swift /host/spi-builder-workspace/Sources/Collection+Future.swift /host/spi-builder-workspace/Sources/Either.swift /host/spi-builder-workspace/Sources/Future+Always.swift /host/spi-builder-workspace/Sources/Future+Do.swift /host/spi-builder-workspace/Sources/Future+Map.swift /host/spi-builder-workspace/Sources/Future+Race.swift /host/spi-builder-workspace/Sources/Future+Recover.swift /host/spi-builder-workspace/Sources/Future+Retry.swift /host/spi-builder-workspace/Sources/Future+Time.swift /host/spi-builder-workspace/Sources/Future+Validate.swift /host/spi-builder-workspace/Sources/Future+Variadic.swift /host/spi-builder-workspace/Sources/Future+Wrap.swift -primary-file /host/spi-builder-workspace/Sources/Future.swift -primary-file /host/spi-builder-workspace/Sources/FutureError.swift /host/spi-builder-workspace/Sources/Promise+Void.swift /host/spi-builder-workspace/Sources/Promise.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Future.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Future.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Future.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Future.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/FutureError.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/FutureError.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/FutureError.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/FutureError.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 4.2 -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/Futura.swift.build/Debug-android-aarch64/Futura-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Futura -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Futura_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/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Future.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/FutureError.o -index-unit-output-path /Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Future.o -index-unit-output-path /Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/FutureError.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/Collection+Future.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile Collection+Future.swift
/host/spi-builder-workspace/Sources/Collection+Future.swift:40:29: error: value of type 'Self' has no member 'containsOnly'
38 |             for future in self {
39 |                 future.then(on: queue) { _ in
40 |                     if self.containsOnly(where: { $0.state == .resolved }) {
   |                             `- error: value of type 'Self' has no member 'containsOnly'
41 |                         fullfill(self.compactMap { $0.value })
42 |                     }
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/Callback.swift -primary-file /host/spi-builder-workspace/Sources/Collection+Future.swift -primary-file /host/spi-builder-workspace/Sources/Either.swift /host/spi-builder-workspace/Sources/Future+Always.swift /host/spi-builder-workspace/Sources/Future+Do.swift /host/spi-builder-workspace/Sources/Future+Map.swift /host/spi-builder-workspace/Sources/Future+Race.swift /host/spi-builder-workspace/Sources/Future+Recover.swift /host/spi-builder-workspace/Sources/Future+Retry.swift /host/spi-builder-workspace/Sources/Future+Time.swift /host/spi-builder-workspace/Sources/Future+Validate.swift /host/spi-builder-workspace/Sources/Future+Variadic.swift /host/spi-builder-workspace/Sources/Future+Wrap.swift /host/spi-builder-workspace/Sources/Future.swift /host/spi-builder-workspace/Sources/FutureError.swift /host/spi-builder-workspace/Sources/Promise+Void.swift /host/spi-builder-workspace/Sources/Promise.swift -supplementary-output-file-map /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/supplementaryOutputs-1 -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 4.2 -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/Futura.swift.build/Debug-android-aarch64/Futura-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Futura -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Futura_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/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Callback.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Collection+Future.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Either.o -index-unit-output-path /Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Callback.o -index-unit-output-path /Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Collection+Future.o -index-unit-output-path /Futura.swift.build/Debug-android-aarch64/Futura-t.build/Objects-normal/aarch64/Either.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 android