Swift Package Index

Build Information

Failed to build flock, reference 0.1.0 (d2d9d5), with Swift 6.3 for macOS (Xcode) using Xcode 26.4 on 10 Apr 2026 08:31:12 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/naoty/flock.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/naoty/flock
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at d2d9d55 Add Makefile
Cloned https://github.com/naoty/flock.git
Revision (git rev-parse @):
d2d9d55b2ffef1a7587ed5df182f4bedafb7dcc3
SUCCESS checkout https://github.com/naoty/flock.git at 0.1.0
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.3
Building package at path:  $PWD
https://github.com/naoty/flock.git
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.3' to specify the current tools version
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-10 04:31:10.673 xcodebuild[525:3015] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-10-04_04-31-0010.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.3' to specify the current tools version
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.3' to specify the current tools version
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-10 04:31:12.434 xcodebuild[576:3395] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-10-04_04-31-0012.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.3' to specify the current tools version
BUILD FAILURE 6.3 macosXcodebuild