Build Information
Failed to build containerization, reference 0.54.0 (baf212), with Swift 6.1 for iOS using Xcode 16.3 on 31 Oct 2026 16:39:33 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: 5.1.4
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/apple/containerization.git
Reference: 0.54.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/apple/containerization
* tag 0.54.0 -> FETCH_HEAD
HEAD is now at baf212e Add subpath mount support to LinuxPod (#987)
Cloned https://github.com/apple/containerization.git
Revision (git rev-parse @):
baf212e5a8e432e539beee325050aa26443a154d
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/apple/containerization.git at 0.54.0
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Build
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Selected platform: iOS
Swift version: 6.1
Building package at path: $PWD
https://github.com/apple/containerization.git
https://github.com/apple/containerization.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)
2026-10-31 09:39:32.274 xcodebuild[506:2912] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-31-10_09-39-0032.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)
2026-10-31 09:39:33.002 xcodebuild[519:3024] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-31-10_09-39-0033.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 iOS