Swift Package Index

Build Information

Failed to build SynchronizationKit, reference v1.1.2 (c9ef5d), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 28 Sep 2026 12:22:17 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

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/sinoru/swift-synchronization-kit.git
Reference: v1.1.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/sinoru/swift-synchronization-kit
 * tag               v1.1.2     -> FETCH_HEAD
HEAD is now at c9ef5d6 Merge branch 'release/1.1.2'
Cloned https://github.com/sinoru/swift-synchronization-kit.git
Revision (git rev-parse @):
c9ef5d6f7c9f2aeaec8b5558b925ebc0aef8ff10
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/sinoru/swift-synchronization-kit.git at v1.1.2
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Build
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Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/sinoru/swift-synchronization-kit.git
https://github.com/sinoru/swift-synchronization-kit.git
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
error: fatalError
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
Resolved source packages:
  spi-builder-workspace: (null)
2026-09-28 05:22:16.628 xcodebuild[503:2902] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-28-09_05-22-0016.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
Resolved source packages:
  spi-builder-workspace: (null)
2026-09-28 05:22:17.358 xcodebuild[515:3019] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-28-09_05-22-0017.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
BUILD FAILURE 6.1 macosXcodebuild