Swift Package Index

Build Information

Failed to build swift-differentiation, reference 2.0.1 (6403b0), with Swift 6.0 for macOS (Xcode) using Xcode 16.2 on 20 Apr 2026 20:02:04 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: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/differentiable-swift/swift-differentiation.git
Reference: 2.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/differentiable-swift/swift-differentiation
 * tag               2.0.1      -> FETCH_HEAD
HEAD is now at 6403b0a chore: bump minimum stdlib dependency
Cloned https://github.com/differentiable-swift/swift-differentiation.git
Revision (git rev-parse @):
6403b0a43d3fcbc798e3f84574e2f151bf398478
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/differentiable-swift/swift-differentiation.git at 2.0.1
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Build
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Selected platform:         macosXcodebuild
Swift version:             6.0
Building package at path:  $PWD
https://github.com/differentiable-swift/swift-differentiation.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 6.1.0 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 6.1.0 but the installed version is 6.0.0
2026-04-20 13:02:01.535 xcodebuild[478:2797] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-20-04_13-02-0001.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.1.0 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 6.1.0 but the installed version is 6.0.0
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-20 13:02:03.430 xcodebuild[536:3140] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-20-04_13-02-0003.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.1.0 but the installed version is 6.0.0
BUILD FAILURE 6.0 macosXcodebuild