Swift Package Index

Build Information

Failed to build mqtt-nio, reference 3.0.0-rc.1 (64c9fb), with Swift 6.1 for watchOS using Xcode 16.3 on 30 Sep 2026 22:42:19 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: 3.0.0-rc.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swift-server-community/mqtt-nio
 * tag               3.0.0-rc.1 -> FETCH_HEAD
HEAD is now at 64c9fb4 Mark `MQTTSubscription.AsyncIterator` as non-`Sendable` (#277)
Cloned https://github.com/swift-server-community/mqtt-nio.git
Revision (git rev-parse @):
64c9fb4d7cb9ed40a8f21a195db0e295a9c06265
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/swift-server-community/mqtt-nio.git at 3.0.0-rc.1
========================================
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 15:42:18.836 xcodebuild[504:2890] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-30-09_15-42-0018.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 15:42:19.549 xcodebuild[513:2987] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-30-09_15-42-0019.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