Build Information
Failed to build Readium, reference develop (e20d5c), with Swift 6.2 for macOS (SPM) on 25 Oct 2026 09:25:57 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.3.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 5.1.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/readium/swift-toolkit.git
Reference: develop
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/readium/swift-toolkit
* branch develop -> FETCH_HEAD
* [new branch] develop -> origin/develop
HEAD is now at e20d5cf Add speed and pitch settings to `PublicationSpeechSynthesizer` (#928)
Cloned https://github.com/readium/swift-toolkit.git
Revision (git rev-parse @):
e20d5cfc847c2cfa02aaf7be409848b504bd46ca
SUCCESS checkout https://github.com/readium/swift-toolkit.git at develop
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.2
Building package at path: $PWD
https://github.com/readium/swift-toolkit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.3.0.app xcrun swift build --arch arm64
Fetching https://github.com/apple/swift-docc-plugin
Fetching https://github.com/marmelroy/Zip.git
Fetching https://github.com/readium/Fuzi.git
Fetching https://github.com/scinfu/SwiftSoup.git
Fetching https://github.com/readium/ZIPFoundation.git
[1/2345] Fetching swift-docc-plugin
[236/3190] Fetching swift-docc-plugin, fuzi
[752/9150] Fetching swift-docc-plugin, fuzi, zipfoundation
[837/16282] Fetching swift-docc-plugin, fuzi, zipfoundation, swiftsoup
[1261/18282] Fetching swift-docc-plugin, fuzi, zipfoundation, swiftsoup, zip
Fetched https://github.com/readium/ZIPFoundation.git from cache (2.97s)
Fetched https://github.com/readium/Fuzi.git from cache (2.97s)
Fetched https://github.com/apple/swift-docc-plugin from cache (2.97s)
Fetched https://github.com/scinfu/SwiftSoup.git from cache (2.97s)
Fetched https://github.com/marmelroy/Zip.git from cache (2.97s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.5.0 (5.91s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3849] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (1.38s)
Computing version for https://github.com/readium/ZIPFoundation.git
Computed https://github.com/readium/ZIPFoundation.git at 3.0.1 (1.97s)
Computing version for https://github.com/marmelroy/Zip.git
Computed https://github.com/marmelroy/Zip.git at 2.1.2 (0.64s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.69s)
Computing version for https://github.com/readium/Fuzi.git
Computed https://github.com/readium/Fuzi.git at 4.0.1 (0.63s)
Computing version for https://github.com/scinfu/SwiftSoup.git
Computed https://github.com/scinfu/SwiftSoup.git at 2.14.3 (0.53s)
Creating working copy for https://github.com/marmelroy/Zip.git
Working copy of https://github.com/marmelroy/Zip.git resolved at 2.1.2
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.5.0
Creating working copy for https://github.com/readium/ZIPFoundation.git
Working copy of https://github.com/readium/ZIPFoundation.git resolved at 3.0.1
Creating working copy for https://github.com/readium/Fuzi.git
Working copy of https://github.com/readium/Fuzi.git resolved at 4.0.1
Creating working copy for https://github.com/scinfu/SwiftSoup.git
Working copy of https://github.com/scinfu/SwiftSoup.git resolved at 2.14.3
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
error: the library 'ReadiumLCP' requires macos 10.13, but depends on the product 'ReadiumZIPFoundation' which requires macos 11.0; consider changing the library 'ReadiumLCP' to require macos 11.0 or later, or the product 'ReadiumZIPFoundation' to require macos 10.13 or earlier.
error: the library 'ReadiumNavigator' requires macos 10.13, but depends on the product 'SwiftSoup' which requires macos 12.0; consider changing the library 'ReadiumNavigator' to require macos 12.0 or later, or the product 'SwiftSoup' to require macos 10.13 or earlier.
error: the library 'ReadiumShared' requires macos 10.13, but depends on the product 'SwiftSoup' which requires macos 12.0; consider changing the library 'ReadiumShared' to require macos 12.0 or later, or the product 'SwiftSoup' to require macos 10.13 or earlier.
error: the library 'ReadiumShared' requires macos 10.13, but depends on the product 'ReadiumZIPFoundation' which requires macos 11.0; consider changing the library 'ReadiumShared' to require macos 11.0 or later, or the product 'ReadiumZIPFoundation' to require macos 10.13 or earlier.
BUILD FAILURE 6.2 macosSpm