Build Information
Failed to build mqtt-nio, reference main (34c21c), with Swift 6.1 for watchOS using Xcode 16.3 on 30 Sep 2026 22:36:50 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: 5.1.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swift-server-community/mqtt-nio.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swift-server-community/mqtt-nio
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 34c21c9 Bump vapor/swift-codecov-action in the dependencies group (#278)
Cloned https://github.com/swift-server-community/mqtt-nio.git
Revision (git rev-parse @):
34c21c97cf0f9e1e24e807d23164257567948b6e
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/swift-server-community/mqtt-nio.git at main
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.1
Building package at path: $PWD
https://github.com/swift-server-community/mqtt-nio.git
https://github.com/swift-server-community/mqtt-nio.git
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.2.3 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 6.2.3 but the installed version is 6.1.0
Resolved source packages:
spi-builder-workspace: (null)
2026-09-30 15:36:49.883 xcodebuild[503:2905] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-30-09_15-36-0049.xcresult
xcodebuild: error: Could not resolve package dependencies:
package 'spi-builder-workspace' is using Swift tools version 6.2.3 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 6.2.3 but the installed version is 6.1.0
Resolved source packages:
spi-builder-workspace: (null)
2026-09-30 15:36:50.610 xcodebuild[514:3014] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-30-09_15-36-0050.xcresult
xcodebuild: error: Could not resolve package dependencies:
package 'spi-builder-workspace' is using Swift tools version 6.2.3 but the installed version is 6.1.0
BUILD FAILURE 6.1 watchOS