Build Information
Failed to build swtws, reference master (b3f1ec), with Swift 6.4 for macOS (SPM) on 16 Sep 2026 19:37:57 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swift-tweets/swtws.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swift-tweets/swtws
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at b3f1ece Merge pull request #5 from Kuniwak/update-readme
Cloned https://github.com/swift-tweets/swtws.git
Revision (git rev-parse @):
b3f1ece4518a42eb451849d2cd4d30f3824a2506
SUCCESS checkout https://github.com/swift-tweets/swtws.git at master
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.4
Building package at path: $PWD
https://github.com/swift-tweets/swtws.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Fetching https://github.com/swift-tweets/tweetup-kit.git
Fetching https://github.com/kylef/Commander.git
[1/1588] Fetching commander
[33/2136] Fetching commander, tweetup-kit
Fetched https://github.com/swift-tweets/tweetup-kit.git (1.00s)
Fetched https://github.com/kylef/Commander.git (1.00s)
Computing version for https://github.com/kylef/Commander.git
Computed https://github.com/kylef/Commander.git at 0.9.2 (1.71s)
Fetching https://github.com/kylef/Spectre.git
[1/1021] Fetching spectre
Fetched https://github.com/kylef/Spectre.git (1.03s)
Computing version for https://github.com/kylef/Spectre.git
Computed https://github.com/kylef/Spectre.git at 0.10.1 (3.21s)
Computing version for https://github.com/swift-tweets/tweetup-kit.git
Computed https://github.com/swift-tweets/tweetup-kit.git at 0.2.1 (0.63s)
Fetching https://github.com/swift-tweets/OAuthSwift.git
Fetching https://github.com/koher/PromiseK.git
[1/2511] Fetching oauthswift
[378/3040] Fetching oauthswift, promisek
Fetched https://github.com/swift-tweets/OAuthSwift.git (1.43s)
Fetched https://github.com/koher/PromiseK.git (1.43s)
Computing version for https://github.com/swift-tweets/OAuthSwift.git
error: the Swift tools version specification is possibly missing a version specifier; consider using '// swift-tools-version: 6.4' to specify the current Swift toolchain version as the lowest Swift version supported by the project
BUILD FAILURE 6.4 macosSpm