Futures – Build Information – Swift Package Index

Build Information

Failed to build Futures, reference 0.1.2 (374088), with Swift 6.4 for macOS (SPM) on 16 Sep 2026 00:46:16 UTC.

Build Command

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

Build Log

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RunAll
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Builder version: 5.1.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/dfunckt/swift-futures.git
Reference: 0.1.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/dfunckt/swift-futures
 * tag               0.1.2      -> FETCH_HEAD
HEAD is now at 374088d Revert "Simplify ReadyQueue node implementation"
Cloned https://github.com/dfunckt/swift-futures.git
Revision (git rev-parse @):
374088daeb749d19b89f81955984e2230bcbeaad
SUCCESS checkout https://github.com/dfunckt/swift-futures.git at 0.1.2
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Build
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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
[84 / 104] FuturesSync
[87 / 104] Futures
[89 / 117]
[100 / 117] Futures
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/JoinFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile JoinFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/LazyFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile LazyFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MapFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapKeyPathFuture+Arity.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MapKeyPathFuture+Arity.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapKeyPathFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MapKeyPathFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapResultFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MapResultFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MatchEitherFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MatchEitherFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MatchOptionalFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MatchOptionalFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MatchResultFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile MatchResultFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/NeverFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile NeverFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/PeekFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile PeekFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/PollOnFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile PollOnFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/PrintFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile PrintFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/ReadyFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile ReadyFuture.swift
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/ReferenceFuture.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile ReferenceFuture.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/Future/JoinFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/LazyFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapKeyPathFuture+Arity.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapKeyPathFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MapResultFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MatchEitherFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MatchOptionalFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/MatchResultFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/NeverFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/PeekFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/PollOnFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/PrintFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/ReadyFuture.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Futures/Future/ReferenceFuture.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-3 -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/JoinFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/LazyFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapKeyPathFuture+Arity.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapKeyPathFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapResultFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MatchEitherFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MatchOptionalFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MatchResultFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/NeverFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/PeekFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/PollOnFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/PrintFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/ReadyFuture.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Futures.build/Debug/Futures-t.build/Objects-normal/arm64/ReferenceFuture.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/JoinFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/LazyFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapKeyPathFuture+Arity.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapKeyPathFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MapResultFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MatchEitherFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MatchOptionalFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/MatchResultFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/NeverFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/PeekFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/PollOnFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/PrintFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/ReadyFuture.o -index-unit-output-path /Futures.build/Debug/Futures-t.build/Objects-normal/arm64/ReferenceFuture.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm