Swift Package IndexBuild Information
Failed to build swift-png, reference 4.5.1 (8a0bcd), with Swift 6.1 for macOS (SPM) on 20 Mar 2026 03:04:51 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: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/tayloraswift/swift-png.git
Reference: 4.5.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/tayloraswift/swift-png
* tag 4.5.1 -> FETCH_HEAD
HEAD is now at 8a0bcd4 Merge pull request #93 from tayloraswift/android
Cloned https://github.com/tayloraswift/swift-png.git
Revision (git rev-parse @):
8a0bcd4df5e4b307c804937776a56dd6ecdf6396
SUCCESS checkout https://github.com/tayloraswift/swift-png.git at 4.5.1
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/tayloraswift/swift-png.git
https://github.com/tayloraswift/swift-png.git
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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
Fetching https://github.com/rarestype/h
Fetching https://github.com/ordo-one/dollup
[1/14] Fetching dollup
[15/1134] Fetching dollup, h
Fetched https://github.com/ordo-one/dollup from cache (0.88s)
Fetched https://github.com/rarestype/h from cache (0.88s)
Computing version for https://github.com/rarestype/h
Computed https://github.com/rarestype/h at 1.0.1 (1.39s)
Computing version for https://github.com/ordo-one/dollup
error: Dependencies could not be resolved because root depends on 'dollup' 1.0.1..<2.0.0.
'dollup' >= 1.0.1 cannot be used because 'dollup' 1.0.1 contains incompatible tools version (6.2.0) and no versions of 'dollup' match the requirement 1.0.2..<2.0.0.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
Updating https://github.com/ordo-one/dollup
Updating https://github.com/rarestype/h
Updated https://github.com/ordo-one/dollup (0.48s)
Updated https://github.com/rarestype/h (0.48s)
Computing version for https://github.com/rarestype/h
Computed https://github.com/rarestype/h at 1.0.1 (0.54s)
Computing version for https://github.com/ordo-one/dollup
error: Dependencies could not be resolved because root depends on 'dollup' 1.0.1..<2.0.0.
'dollup' >= 1.0.1 cannot be used because 'dollup' 1.0.1 contains incompatible tools version (6.2.0) and no versions of 'dollup' match the requirement 1.0.2..<2.0.0.
BUILD FAILURE 6.1 macosSpm