Swift Package IndexBuild Information
Failed to build KrakenKit, reference 0.0.1 (9b3d1f), with Swift 6.3 for Linux on 22 Apr 2026 10:58:53 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/krakencl/krakenkit.git
Reference: 0.0.1
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/krakencl/krakenkit
* tag 0.0.1 -> FETCH_HEAD
HEAD is now at 9b3d1fb New toolchain released.
Cloned https://github.com/krakencl/krakenkit.git
Revision (git rev-parse @):
9b3d1fbaf39aaa0f53d1b814f3a2811263e77ab3
SUCCESS checkout https://github.com/krakencl/krakenkit.git at 0.0.1
========================================
Build
========================================
Selected platform: linux
Swift version: 6.3
Building package at path: $PWD
https://github.com/krakencl/krakenkit.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:5a7d791d2ead8a924b1292cb31bf3288eabcfe8880e0b005b00b45b71a5bc36a
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest
Fetching https://github.com/apple/swift-protobuf.git
Fetching https://github.com/KrakenCL/LibPNG.git
[1/57] Fetching libpng
Fetched https://github.com/KrakenCL/LibPNG.git from cache (0.22s)
[1/47168] Fetching swift-protobuf
Fetched https://github.com/apple/swift-protobuf.git from cache (9.53s)
Computing version for https://github.com/KrakenCL/LibPNG.git
Computed https://github.com/KrakenCL/LibPNG.git at 0.0.3 (11.10s)
Computing version for https://github.com/apple/swift-protobuf.git
Computed https://github.com/apple/swift-protobuf.git at 1.37.0 (0.87s)
Creating working copy for https://github.com/apple/swift-protobuf.git
Working copy of https://github.com/apple/swift-protobuf.git resolved at 1.37.0
Creating working copy for https://github.com/KrakenCL/LibPNG.git
Working copy of https://github.com/KrakenCL/LibPNG.git resolved at 0.0.3
warning: you may be able to install libpng using your system-packager:
apt-get install libpng
warning: you may be able to install libpng using your system-packager:
apt-get install libpng
[1/1] Compiling plugin SwiftProtobufPlugin
Building for debugging...
[1/14] Write sources
[1/14] Write swift-version-24593BA9C3E375BF.txt
[1/14] Write sources
error: emit-module command failed with exit code 1 (use -v to see invocation)
[7/100] Emitting module LibPNG
/host/spi-builder-workspace/.build/checkouts/LibPNG/Library/CPNG/module.modulemap:2:10: error: header '/usr/local/include/png.h' not found
1 | module CPNG [system] {
2 | header "/usr/local/include/png.h"
| `- error: header '/usr/local/include/png.h' not found
3 | link "png"
4 | export *
/host/spi-builder-workspace/.build/checkouts/LibPNG/Sources/LibPNG/LibPNG.swift:19:8: error: could not build C module 'CPNG'
17 |
18 | import Foundation
19 | import CPNG
| `- error: could not build C module 'CPNG'
20 |
21 | public typealias Pixel = UInt8
[8/100] Compiling LibPNG LibPNG.swift
/host/spi-builder-workspace/.build/checkouts/LibPNG/Library/CPNG/module.modulemap:2:10: error: header '/usr/local/include/png.h' not found
1 | module CPNG [system] {
2 | header "/usr/local/include/png.h"
| `- error: header '/usr/local/include/png.h' not found
3 | link "png"
4 | export *
/host/spi-builder-workspace/.build/checkouts/LibPNG/Sources/LibPNG/LibPNG.swift:19:8: error: could not build C module 'CPNG'
17 |
18 | import Foundation
19 | import CPNG
| `- error: could not build C module 'CPNG'
20 |
21 | public typealias Pixel = UInt8
[9/100] Compiling SwiftProtobuf ProtoNameProviding.swift
[10/100] Compiling SwiftProtobuf ProtobufAPIVersionCheck.swift
[11/100] Compiling SwiftProtobuf ProtobufMap.swift
[12/100] Compiling SwiftProtobuf SelectiveVisitor.swift
[13/100] Compiling SwiftProtobuf SimpleExtensionMap.swift
[14/100] Compiling SwiftProtobuf StringUtils.swift
[15/100] Compiling SwiftProtobuf SwiftProtobufContiguousBytes.swift
[16/100] Compiling SwiftProtobuf SwiftProtobufError.swift
[17/100] Compiling SwiftProtobuf TextFormatDecoder.swift
[18/100] Compiling SwiftProtobuf TextFormatDecodingError.swift
[19/100] Compiling SwiftProtobuf TextFormatDecodingOptions.swift
[20/100] Compiling SwiftProtobuf TextFormatEncoder.swift
[21/100] Compiling SwiftProtobuf TextFormatEncodingOptions.swift
[22/100] Compiling SwiftProtobuf TextFormatEncodingVisitor.swift
[23/100] Compiling SwiftProtobuf TextFormatScanner.swift
[24/100] Compiling SwiftProtobuf TimeUtils.swift
[25/100] Compiling SwiftProtobuf UnknownStorage.swift
[26/100] Compiling SwiftProtobuf UnsafeRawPointer+Shims.swift
[27/100] Compiling SwiftProtobuf Varint.swift
[28/100] Compiling SwiftProtobuf Version.swift
[29/100] Compiling SwiftProtobuf Visitor.swift
[30/100] Compiling SwiftProtobuf WireFormat.swift
[31/100] Compiling SwiftProtobuf ZigZag.swift
[32/100] Compiling SwiftProtobuf Message+BinaryAdditions_Data.swift
[33/100] Compiling SwiftProtobuf Message+FieldMask.swift
[34/100] Compiling SwiftProtobuf Message+JSONAdditions.swift
[35/100] Compiling SwiftProtobuf Message+JSONAdditions_Data.swift
[36/100] Compiling SwiftProtobuf Message+JSONArrayAdditions.swift
[37/100] Compiling SwiftProtobuf Message+JSONArrayAdditions_Data.swift
[38/100] Compiling SwiftProtobuf Message+TextFormatAdditions.swift
[39/100] Compiling SwiftProtobuf Message.swift
[40/100] Compiling SwiftProtobuf MessageExtension.swift
[41/100] Compiling SwiftProtobuf NameMap.swift
[42/100] Compiling SwiftProtobuf PathDecoder.swift
[43/100] Compiling SwiftProtobuf PathVisitor.swift
[44/100] Emitting module SwiftProtobuf
error: cancelled
BUILD FAILURE 6.3 linux