Futures – Build Information – Swift Package Index

Build Information

Failed to build Futures, reference master (518a3f), with Swift 6.4 for macOS (SPM) on 16 Sep 2026 00:46:37 UTC.

Build Command

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

Build Log

========================================
RunAll
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Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/dfunckt/swift-futures.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/dfunckt/swift-futures
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 518a3fd Update for swiftformat 0.47.2
Cloned https://github.com/dfunckt/swift-futures.git
Revision (git rev-parse @):
518a3fddab9feb068391e10302d44181e3653979
SUCCESS checkout https://github.com/dfunckt/swift-futures.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/dfunckt/swift-futures.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Pre-planning 1 / 183]
[Planning deferred tasks]
[36 / 65]
[39 / 66] FuturesPrivate
[40 / 66] FuturesSync
[49 / 103]
[53 / 103]
[56 / 103]
[57 / 103]
[61 / 103]
[63 / 103]
[65 / 103]
[77 / 103] FuturesSync
[78 / 103] FuturesSync
[87 / 104] Futures
[89 / 117]
[100 / 117] Futures
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/AbortStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile AbortStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/AssertNoErrorStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile AssertNoErrorStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/BreakpointStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile BreakpointStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/BufferStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile BufferStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/CatchErrorStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile CatchErrorStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/CompactMapStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile CompactMapStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/CompleteOnErrorStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile CompleteOnErrorStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/ConcatenateStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile ConcatenateStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/DropStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile DropStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/DropUntilOutputStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile DropUntilOutputStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/DropWhileStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile DropWhileStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/EmptyStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile EmptyStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/EnumerateStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile EnumerateStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/FilterStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile FilterStream.swift
/Users/admin/builder/spi-builder-workspace/Sources/Futures/Internal/Private.swift:9:8: [1;31merror: [1;39mno such module 'Darwin.POSIX.signal'[0;0m
  [0;36m7 |[0;0m
  [0;36m8 |[0;0m #if canImport(Darwin)
  [0;36m9 |[0;0m import Darwin.POSIX.signal
    [0;36m|[0;0m        `- [1;31merror: [1;39mno such module 'Darwin.POSIX.signal'[0;0m
 [0;36m10 |[0;0m #else
 [0;36m11 |[0;0m import Glibc
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -filelist /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/sources-1 -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/AbortStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/AssertNoErrorStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/BreakpointStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/BufferStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/CatchErrorStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/CompactMapStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/CompleteOnErrorStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/ConcatenateStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/DropStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/DropUntilOutputStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/DropWhileStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/EmptyStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/EnumerateStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/FilterStream.swift -supplementary-output-file-map /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/supplementaryOutputs-10 -target arm64-apple-macos12.0 -module-can-import-version Darwin 428.0.10 0 -disable-cross-import-overlay-search -swift-module-cross-import Darwin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/Darwin.swiftcrossimport/xlocale.swiftoverlay -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/Futures-dependencies-1.json -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/PackageFrameworks -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/Intermediates.noindex/SwiftExplicitPrecompiledModules -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 -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 -fmodule-map-file\=/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/GeneratedModuleMaps/FuturesPrivate.modulemap -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/Sources/FuturesPrivate/include -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/Futures.build/Debug/Futures-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Futures -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/Futures_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-macos27.0 -target-sdk-version 27.0 -target-sdk-name macosx27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/AbortStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/AssertNoErrorStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/BreakpointStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/BufferStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/CatchErrorStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/CompactMapStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/CompleteOnErrorStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/ConcatenateStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/DropStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/DropUntilOutputStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/DropWhileStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/EmptyStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/EnumerateStream.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/FilterStream.o -debug-module-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/Futures.swiftmodule -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/AbortStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/AssertNoErrorStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/BreakpointStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/BufferStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/CatchErrorStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/CompactMapStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/CompleteOnErrorStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/ConcatenateStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/DropStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/DropUntilOutputStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/DropWhileStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/EmptyStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/EnumerateStream.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/FilterStream.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/Futures/Stream/FlatMapStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile FlatMapStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/FlattenResultStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile FlattenResultStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile FlattenStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/ForEachStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile ForEachStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/GenerateStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile GenerateStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/HandleEventsStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile HandleEventsStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/JoinStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile JoinStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/JustStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile JustStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/LatestStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile LatestStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/LazyStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile LazyStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MapKeyPathStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MapKeyPathStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MapResultStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MapResultStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MapStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MapStream.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MatchEitherStream.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MatchEitherStream.swift
/Users/admin/builder/spi-builder-workspace/Sources/Futures/Internal/Private.swift:9:8: [1;31merror: [1;39mno such module 'Darwin.POSIX.signal'[0;0m
  [0;36m7 |[0;0m
  [0;36m8 |[0;0m #if canImport(Darwin)
  [0;36m9 |[0;0m import Darwin.POSIX.signal
    [0;36m|[0;0m        `- [1;31merror: [1;39mno such module 'Darwin.POSIX.signal'[0;0m
 [0;36m10 |[0;0m #else
 [0;36m11 |[0;0m import Glibc
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -filelist /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/sources-1 -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/FlatMapStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/FlattenResultStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/ForEachStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/GenerateStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/HandleEventsStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/JoinStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/JustStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/LatestStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/LazyStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MapKeyPathStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MapResultStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MapStream.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Stream/MatchEitherStream.swift -supplementary-output-file-map /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/supplementaryOutputs-11 -target arm64-apple-macos12.0 -module-can-import-version Darwin 428.0.10 0 -disable-cross-import-overlay-search -swift-module-cross-import Darwin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/Darwin.swiftcrossimport/xlocale.swiftoverlay -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/Futures-dependencies-1.json -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/PackageFrameworks -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/Intermediates.noindex/SwiftExplicitPrecompiledModules -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 -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 -fmodule-map-file\=/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/GeneratedModuleMaps/FuturesPrivate.modulemap -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/Sources/FuturesPrivate/include -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/Futures.build/Debug/Futures-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Futures -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/Futures_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-macos27.0 -target-sdk-version 27.0 -target-sdk-name macosx27.0 -in-process-plugin-server-path 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/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MatchEitherStream.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm