Shift – Build Information – Swift Package Index

Build Information

Failed to build Shift, reference 0.11.0 (bfcfcb), with Swift 6.4 for macOS (SPM) on 19 Sep 2026 19:25:28 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.
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Checkout
========================================
Clone URL: https://github.com/vinhnx/Shift.git
Reference: 0.11.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/vinhnx/Shift
 * tag               0.11.0     -> FETCH_HEAD
HEAD is now at bfcfcb6 More proper way to handle Event Kit request handler with concurrency
Cloned https://github.com/vinhnx/Shift.git
Revision (git rev-parse @):
bfcfcb6368925a1f4862725691db310ad1637f06
SUCCESS checkout https://github.com/vinhnx/Shift.git at 0.11.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/vinhnx/Shift.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 / 156]
[Planning deferred tasks]
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[36 / 62] _NumericsShims
[51 / 76] RealModule
[52 / 76] RealModule
[68 / 88] Algorithms
[71 / 88] RealModule
[71 / 88] Algorithms
[80 / 89] Shift
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[150 / 159] Shift
Fetching https://github.com/apple/swift-algorithms
[1/6145] Fetching swift-algorithms
Fetched https://github.com/apple/swift-algorithms (1.28s)
Computing version for https://github.com/apple/swift-algorithms
Computed https://github.com/apple/swift-algorithms at 1.2.1 (1.95s)
Fetching https://github.com/apple/swift-numerics.git
[1/6636] Fetching swift-numerics
Fetched https://github.com/apple/swift-numerics.git (1.34s)
Computing version for https://github.com/apple/swift-numerics.git
Computed https://github.com/apple/swift-numerics.git at 1.1.1 (1.91s)
Creating working copy for https://github.com/apple/swift-numerics.git
Working copy of https://github.com/apple/swift-numerics.git resolved at 1.1.1
Creating working copy for https://github.com/apple/swift-algorithms
Working copy of https://github.com/apple/swift-algorithms resolved at 1.2.1
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Shift/Shift.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile Shift.swift
/Users/admin/builder/spi-builder-workspace/Sources/Shift/Shift.swift:240:71: [1;33mwarning: [1;39mconverting non-Sendable function value to '@Sendable (Bool, (any Error)?) -> Void' may introduce data races[0;0m
[0;36m238 |[0;0m
[0;36m239 |[0;0m             if #available(iOS 17.0, *) {
[0;36m240 |[0;0m                 self.eventStore.requestFullAccessToEvents(completion: completion)
    [0;36m|[0;0m                                                                       `- [1;33mwarning: [1;39mconverting non-Sendable function value to '@Sendable (Bool, (any Error)?) -> Void' may introduce data races[0;0m
[0;36m241 |[0;0m             } else {
[0;36m242 |[0;0m                 self.eventStore.requestAccess(to: .event, completion: completion)
/Users/admin/builder/spi-builder-workspace/Sources/Shift/Shift.swift:242:71: [1;33mwarning: [1;39mconverting non-Sendable function value to '@Sendable (Bool, (any Error)?) -> Void' may introduce data races[0;0m
[0;36m240 |[0;0m                 self.eventStore.requestFullAccessToEvents(completion: completion)
[0;36m241 |[0;0m             } else {
[0;36m242 |[0;0m                 self.eventStore.requestAccess(to: .event, completion: completion)
    [0;36m|[0;0m                                                                       `- [1;33mwarning: [1;39mconverting non-Sendable function value to '@Sendable (Bool, (any Error)?) -> Void' may introduce data races[0;0m
[0;36m243 |[0;0m             }
[0;36m244 |[0;0m         }
/Users/admin/builder/spi-builder-workspace/Sources/Shift/Shift.swift:240:33: [1;31merror: [1;39m'requestFullAccessToEvents(completion:)' is only available in macOS 14.0 or newer[0;0m
 [0;36m35 |[0;0m
 [0;36m36 |[0;0m /// Swift wrapper for EventKit
 [0;36m37 |[0;0m public final class Shift: ObservableObject {
    [0;36m|[0;0m                    `- [1;39mnote: [1;39madd '@available' attribute to enclosing class[0;0m
 [0;36m38 |[0;0m
 [0;36m39 |[0;0m     // MARK: - Properties
    [0;36m:[0;0m
[0;36m226 |[0;0m
[0;36m227 |[0;0m
[0;36m228 |[0;0m     private func requestCalendarAccess() async throws -> Bool {
    [0;36m|[0;0m                  `- [1;39mnote: [1;39madd '@available' attribute to enclosing instance method[0;0m
[0;36m229 |[0;0m         try await withCheckedThrowingContinuation { [weak self] continuation in
[0;36m230 |[0;0m             guard let self else { return }
    [0;36m:[0;0m
[0;36m238 |[0;0m
[0;36m239 |[0;0m             if #available(iOS 17.0, *) {
[0;36m240 |[0;0m                 self.eventStore.requestFullAccessToEvents(completion: completion)
    [0;36m|[0;0m                                 |- [1;31merror: [1;39m'requestFullAccessToEvents(completion:)' is only available in macOS 14.0 or newer[0;0m
    [0;36m|[0;0m                                 `- [1;39mnote: [1;39madd 'if #available' version check[0;0m
[0;36m241 |[0;0m             } else {
[0;36m242 |[0;0m                 self.eventStore.requestAccess(to: .event, completion: completion)
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/Shift/Shift.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift.dia -target arm64-apple-macos12.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -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 -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -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/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift-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/checkouts/swift-numerics/Sources/_NumericsShims/include/module.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/.build/checkouts/swift-numerics/Sources/_NumericsShims/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/Shift.build/Debug/Shift-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Shift -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift_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/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift.o -debug-module-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift.swiftmodule -index-unit-output-path /Shift.build/Debug/Shift-t.build/Objects-normal/arm64/Shift.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm