Swift Package Index

Build Information

Failed to build Firebase, reference 13.1.1 (dc6dfd), with Swift 6.1 for watchOS using Xcode 16.3 on 24 Oct 2026 12:58:58 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: 5.1.3
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/firebase/firebase-ios-sdk.git
Reference: 13.1.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/firebase/firebase-ios-sdk
 * tag               13.1.1     -> FETCH_HEAD
HEAD is now at dc6dfd4 Version 13.1 (#16940)
Cloned https://github.com/firebase/firebase-ios-sdk.git
Revision (git rev-parse @):
dc6dfd442b1f3ec215ed62b8beb2623ffab010d6
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/firebase/firebase-ios-sdk.git at 13.1.1
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Build
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Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/firebase/firebase-ios-sdk.git
https://github.com/firebase/firebase-ios-sdk.git
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.2.0 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 6.2.0 but the installed version is 6.1.0
Resolved source packages:
  spi-builder-workspace: (null)
2026-10-24 05:58:56.948 xcodebuild[506:2915] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-24-10_05-58-0056.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.2.0 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 6.2.0 but the installed version is 6.1.0
Resolved source packages:
  spi-builder-workspace: (null)
2026-10-24 05:58:58.185 xcodebuild[543:3145] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-24-10_05-58-0058.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.2.0 but the installed version is 6.1.0
BUILD FAILURE 6.1 watchOS