Build Information
Failed to build SwiftLibModbus, reference 2.1.2 (9ec8ff), with Swift 6.0 for watchOS using Xcode 16.2 on 20 Apr 2026 22:39:36 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/jollyjinx/SwiftLibModbus.git
Reference: 2.1.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jollyjinx/SwiftLibModbus
* tag 2.1.2 -> FETCH_HEAD
HEAD is now at 9ec8ff8 Preserve TCP response timeout across reconnects
Cloned https://github.com/jollyjinx/SwiftLibModbus.git
Revision (git rev-parse @):
9ec8ff8e9be56af486bcc446a29b5b9608f6ce01
SUCCESS checkout https://github.com/jollyjinx/SwiftLibModbus.git at 2.1.2
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.0
Building package at path: $PWD
https://github.com/jollyjinx/SwiftLibModbus.git
Command line invocation:
/Applications/Xcode-16.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.0.0
Resolved source packages:
spi-builder-workspace: (null)
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.0.0
2026-04-20 15:39:33.440 xcodebuild[477:2787] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-20-04_15-39-0033.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 6.0.0
Command line invocation:
/Applications/Xcode-16.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.0.0
Resolved source packages:
spi-builder-workspace: (null)
2026-04-20 15:39:35.218 xcodebuild[542:3156] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-20-04_15-39-0035.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 6.0.0
BUILD FAILURE 6.0 watchOS