Swift Package IndexBuild Information
Failed to build swift-nio-udp, reference 1.0.1 (81bc22), with Swift 6.3 for Linux on 18 Apr 2026 13:21:57 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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
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Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/hironichu/swift-nio-udp.git
Reference: 1.0.1
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/hironichu/swift-nio-udp
* tag 1.0.1 -> FETCH_HEAD
HEAD is now at 81bc221 Add batch send API and performance optimizations
Cloned https://github.com/hironichu/swift-nio-udp.git
Revision (git rev-parse @):
81bc221147d585a4edc24b15b3ef7c0d7278c365
SUCCESS checkout https://github.com/hironichu/swift-nio-udp.git at 1.0.1
========================================
Build
========================================
Selected platform: linux
Swift version: 6.3
Building package at path: $PWD
https://github.com/hironichu/swift-nio-udp.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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-nio.git
[1/83172] Fetching swift-nio
Fetched https://github.com/apple/swift-nio.git from cache (11.30s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.98.0 (12.34s)
Fetching https://github.com/apple/swift-collections.git
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-atomics.git
[1/1820] Fetching swift-atomics
[1476/7421] Fetching swift-atomics, swift-system
[1960/30990] Fetching swift-atomics, swift-system, swift-collections
Fetched https://github.com/apple/swift-atomics.git from cache (0.82s)
Fetched https://github.com/apple/swift-system.git from cache (0.83s)
[1886/23569] Fetching swift-collections
Fetched https://github.com/apple/swift-collections.git from cache (2.21s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.0 (2.83s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.79s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.4.1 (1.08s)
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.6.4
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.4.1
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.98.0
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.0
Building for debugging...
[0/22] Write sources
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[298/301] Compiling NIOUDPTransport NIOUDPTransport+Exports.swift
[299/301] Emitting module NIOUDPTransport
[300/301] Compiling NIOUDPTransport AddressHelpers.swift
[301/301] Compiling NIOUDPTransport NIOUDPTransport.swift
/host/spi-builder-workspace/Sources/NIOUDPTransport/NIOUDPTransport.swift:521:77: error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
519 | name: .init(rawValue: CInt(IP_MULTICAST_LOOP))
520 | )
521 | bootstrap = bootstrap.channelOption(multicastLoopOption, value: CInt(1))
| `- error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
522 |
523 | let multicastTTLOption = ChannelOptions.Types.SocketOption(
/host/spi-builder-workspace/Sources/NIOUDPTransport/NIOUDPTransport.swift:527:76: error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
525 | name: .init(rawValue: CInt(IP_MULTICAST_TTL))
526 | )
527 | bootstrap = bootstrap.channelOption(multicastTTLOption, value: CInt(255))
| `- error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
528 | #endif
529 | } else {
/host/spi-builder-workspace/Sources/NIOUDPTransport/NIOUDPTransport.swift:548:77: error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
546 | name: .init(rawValue: CInt(IPV6_MULTICAST_LOOP))
547 | )
548 | bootstrap = bootstrap.channelOption(multicastLoopOption, value: CInt(1))
| `- error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
549 |
550 | let multicastHopsOption = ChannelOptions.Types.SocketOption(
/host/spi-builder-workspace/Sources/NIOUDPTransport/NIOUDPTransport.swift:554:77: error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
552 | name: .init(rawValue: CInt(IPV6_MULTICAST_HOPS))
553 | )
554 | bootstrap = bootstrap.channelOption(multicastHopsOption, value: CInt(255))
| `- error: cannot convert value of type 'CInt' (aka 'Int32') to expected argument type 'ChannelOptions.Types.SocketOption.Value' (aka 'Int')
555 | #endif
556 | }
BUILD FAILURE 6.3 linux