Build Information
Failed to build swift-rfc-791, reference main (fce518), with Swift 6.2 for macOS (SPM) on 1 Oct 2026 07:16:09 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.3.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 5.1.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swift-ietf/swift-rfc-791.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swift-ietf/swift-rfc-791
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at fce5188 Import Byte instead of the removed Byte Standard Library Integration product
Cloned https://github.com/swift-ietf/swift-rfc-791.git
Revision (git rev-parse @):
fce5188f772da717242089a65149e7403a3d7868
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/swift-ietf/swift-rfc-791.git at main
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.2
Building package at path: $PWD
https://github.com/swift-ietf/swift-rfc-791.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.3.0.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 6.2.4
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.4.0 but the installed version is 6.2.4
BUILD FAILURE 6.2 macosSpm