Build Information
Failed to build swift-testing-performance, reference main (621a9b), with Swift 6.1 for macOS (SPM) on 5 Oct 2026 07:35:24 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64Build Log
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RunAll
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Builder version: 5.1.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/swift-compositions/swift-testing-performance.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swift-compositions/swift-testing-performance
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 621a9b3 Assert on Linux that a retained 1 MiB allocation counts at least one malloc call on the measuring thread
Cloned https://github.com/swift-compositions/swift-testing-performance.git
Revision (git rev-parse @):
621a9b3e3e4e5acd31b09ac61d2a950b5e89e240
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/swift-compositions/swift-testing-performance.git at main
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Build
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Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/swift-compositions/swift-testing-performance.git
https://github.com/swift-compositions/swift-testing-performance.git
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.4.0 but the installed version is 6.1.0
error: fatalError
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.4.0 but the installed version is 6.1.0
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.4.0 but the installed version is 6.1.0
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.4.0 but the installed version is 6.1.0
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.4.0 but the installed version is 6.1.0
BUILD FAILURE 6.1 macosSpm