Futura.swift – Build Information

Build Information

Failed to build Futura.swift, reference master (1dd68c), with Swift 6.4 for macOS (SPM) on 15 Sep 2026 18:27:38 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

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 /Users/admin/builder/spi-builder-workspace/.git/
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:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/thedavidharris/Futura.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Planning deferred tasks]
[19 / 28]
[31 / 40] Futura
[32 / 40] Futura
/Users/admin/builder/spi-builder-workspace/Sources/Future+Retry.swift:21:23: [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m19 |[0;0m     /// - Returns: existing Future object
[0;36m20 |[0;0m     @discardableResult
[0;36m21 |[0;0m     public func retry<Value>(attempts: Int, delay delayTime: TimeInterval = 0, retryBody: @escaping () -> Future<Value>) -> Future<Value> {
   [0;36m|[0;0m                       `- [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m22 |[0;0m
[0;36m23 |[0;0m         var attemptsLeft = attempts
/Users/admin/builder/spi-builder-workspace/Sources/Future.swift:45:21: [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m43 |[0;0m
 [0;36m44 |[0;0m /// Generic class for a Future
 [0;36m45 |[0;0m public class Future<Value>: FutureType {
    [0;36m|[0;0m                     `- [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m46 |[0;0m
 [0;36m47 |[0;0m     /// Generic value type
/Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift:16:28: [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m14 |[0;0m     /// - Parameter futures: an array of futures of the same type
[0;36m15 |[0;0m     /// - Returns: a single promise combining the resolved values of `futures`
[0;36m16 |[0;0m     public static func all<Value>(_ futures: [Future<Value>]) -> Future<[Value]> {
   [0;36m|[0;0m                            `- [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m17 |[0;0m         return Promise<[Value]>{ (fullfill, reject) in
[0;36m18 |[0;0m             if futures.isEmpty {
/Users/admin/builder/spi-builder-workspace/Sources/Future.swift:45:21: [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m43 |[0;0m
 [0;36m44 |[0;0m /// Generic class for a Future
 [0;36m45 |[0;0m public class Future<Value>: FutureType {
    [0;36m|[0;0m                     `- [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m46 |[0;0m
 [0;36m47 |[0;0m     /// Generic value type
/Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift:37:28: [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m35 |[0;0m     /// - Parameter futures: an array of futures of the same type
[0;36m36 |[0;0m     /// - Returns: a single future combining the resolved values of `futures`
[0;36m37 |[0;0m     public static func all<Value>(_ futures: Future<Value>...) -> Future<[Value]> {
   [0;36m|[0;0m                            `- [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m38 |[0;0m         return all(futures)
[0;36m39 |[0;0m     }
/Users/admin/builder/spi-builder-workspace/Sources/Future.swift:45:21: [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m43 |[0;0m
 [0;36m44 |[0;0m /// Generic class for a Future
 [0;36m45 |[0;0m public class Future<Value>: FutureType {
    [0;36m|[0;0m                     `- [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m46 |[0;0m
 [0;36m47 |[0;0m     /// Generic value type
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Future.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile Future.swift
/Users/admin/builder/spi-builder-workspace/Sources/Future.swift:86:29: [1;31merror: [1;39mcannot convert return expression of type 'Value??' to return type 'Value?'[0;0m
 [0;36m84 |[0;0m     /// Convenience accessor for the associated value of the future
 [0;36m85 |[0;0m     public var value: Value? {
 [0;36m86 |[0;0m         return try? result?.get()
    [0;36m|[0;0m                             |- [1;31merror: [1;39mcannot convert return expression of type 'Value??' to return type 'Value?'[0;0m
    [0;36m|[0;0m                             `- [1;39mnote: [1;39marguments to generic parameter 'Wrapped' ('Value?' and 'Value') are expected to be equal[0;0m
 [0;36m87 |[0;0m     }
 [0;36m88 |[0;0m
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c /Users/admin/builder/spi-builder-workspace/Sources/Callback.swift /Users/admin/builder/spi-builder-workspace/Sources/Collection+Future.swift /Users/admin/builder/spi-builder-workspace/Sources/Either.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Always.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Do.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Map.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Race.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Recover.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Retry.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Time.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Validate.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Future+Wrap.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Future.swift /Users/admin/builder/spi-builder-workspace/Sources/FutureError.swift /Users/admin/builder/spi-builder-workspace/Sources/Promise+Void.swift /Users/admin/builder/spi-builder-workspace/Sources/Promise.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Wrap.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Wrap.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Wrap.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Wrap.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future.dia -target arm64-apple-macos12.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/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 -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Futura -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Futura_const_extract_protocols.json -disable-clang-spi -target-sdk-version 27.0 -target-sdk-name macosx27.0 -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Wrap.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future.o -index-unit-output-path /Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Wrap.o -index-unit-output-path /Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Collection+Future.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile Collection+Future.swift
/Users/admin/builder/spi-builder-workspace/Sources/Collection+Future.swift:40:29: [1;31merror: [1;39mvalue of type 'Self' has no member 'containsOnly'[0;0m
[0;36m38 |[0;0m             for future in self {
[0;36m39 |[0;0m                 future.then(on: queue) { _ in
[0;36m40 |[0;0m                     if [4;39mself[0;0m.[4;39mcontainsOnly[0;0m(where: { $0.state == .resolved }) {
   [0;36m|[0;0m                             `- [1;31merror: [1;39mvalue of type 'Self' has no member 'containsOnly'[0;0m
[0;36m41 |[0;0m                         fullfill(self.compactMap { $0.value })
[0;36m42 |[0;0m                     }
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Callback.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Collection+Future.swift /Users/admin/builder/spi-builder-workspace/Sources/Either.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Always.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Do.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Map.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Race.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Recover.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Retry.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Time.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Validate.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Wrap.swift /Users/admin/builder/spi-builder-workspace/Sources/Future.swift /Users/admin/builder/spi-builder-workspace/Sources/FutureError.swift /Users/admin/builder/spi-builder-workspace/Sources/Promise+Void.swift /Users/admin/builder/spi-builder-workspace/Sources/Promise.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Callback.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Callback.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Callback.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Callback.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Collection+Future.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Collection+Future.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Collection+Future.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Collection+Future.dia -target arm64-apple-macos12.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/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 -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Futura -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Futura_const_extract_protocols.json -disable-clang-spi -target-sdk-version 27.0 -target-sdk-name macosx27.0 -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Callback.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Collection+Future.o -index-unit-output-path /Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Callback.o -index-unit-output-path /Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Collection+Future.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile Future+Variadic.swift
/Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift:16:28: [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m14 |[0;0m     /// - Parameter futures: an array of futures of the same type
[0;36m15 |[0;0m     /// - Returns: a single promise combining the resolved values of `futures`
[0;36m16 |[0;0m     public static func all<Value>(_ futures: [Future<Value>]) -> Future<[Value]> {
   [0;36m|[0;0m                            `- [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m17 |[0;0m         return Promise<[Value]>{ (fullfill, reject) in
[0;36m18 |[0;0m             if futures.isEmpty {
/Users/admin/builder/spi-builder-workspace/Sources/Future.swift:45:21: [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m43 |[0;0m
 [0;36m44 |[0;0m /// Generic class for a Future
 [0;36m45 |[0;0m public class Future<Value>: FutureType {
    [0;36m|[0;0m                     `- [1;39mnote: [1;39m'Value' previously declared here[0;0m
 [0;36m46 |[0;0m
 [0;36m47 |[0;0m     /// Generic value type
/Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift:37:28: [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m35 |[0;0m     /// - Parameter futures: an array of futures of the same type
[0;36m36 |[0;0m     /// - Returns: a single future combining the resolved values of `futures`
[0;36m37 |[0;0m     public static func all<Value>(_ futures: Future<Value>...) -> Future<[Value]> {
   [0;36m|[0;0m                            `- [1;33mwarning: [1;39mgeneric parameter 'Value' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode[0;0m
[0;36m38 |[0;0m         return all(futures)
[0;36m39 |[0;0m     }
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 [0;36m44 |[0;0m /// Generic class for a Future
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[0;36m24 |[0;0m                         fullfill(futures.compactMap({ $0.value }))
[0;36m25 |[0;0m                     }
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c /Users/admin/builder/spi-builder-workspace/Sources/Callback.swift /Users/admin/builder/spi-builder-workspace/Sources/Collection+Future.swift /Users/admin/builder/spi-builder-workspace/Sources/Either.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Always.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Do.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Map.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Race.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Recover.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Retry.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Time.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Future+Validate.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Future+Variadic.swift /Users/admin/builder/spi-builder-workspace/Sources/Future+Wrap.swift /Users/admin/builder/spi-builder-workspace/Sources/Future.swift /Users/admin/builder/spi-builder-workspace/Sources/FutureError.swift /Users/admin/builder/spi-builder-workspace/Sources/Promise+Void.swift /Users/admin/builder/spi-builder-workspace/Sources/Promise.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Validate.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Validate.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Validate.swiftdeps 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/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Futura -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Futura_const_extract_protocols.json -disable-clang-spi -target-sdk-version 27.0 -target-sdk-name macosx27.0 -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path 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/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Variadic.o -index-unit-output-path /Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Validate.o -index-unit-output-path /Futura.swift.build/Debug/Futura-t.build/Objects-normal/arm64/Future+Variadic.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm