Swift Package Index

Build Information

Failed to build Mqtt, reference 0.3.0 (2af558), with Swift 6.4 for macOS (SPM) on 16 Sep 2026 07:21:32 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/hjianbo/mqtt.git
Reference: 0.3.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/hjianbo/mqtt
 * tag               0.3.0      -> FETCH_HEAD
HEAD is now at 2af5589 Merge branch 'dev'
Cloned https://github.com/hjianbo/mqtt.git
Revision (git rev-parse @):
2af55898db7cccfc12accfd0a15fe4ecbf9fa579
SUCCESS checkout https://github.com/hjianbo/mqtt.git at 0.3.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/hjianbo/mqtt.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Fetching https://github.com/vapor/sockets
[1/3312] Fetching sockets
Fetched https://github.com/vapor/sockets (1.14s)
Computing version for https://github.com/vapor/sockets
Computed https://github.com/vapor/sockets at 2.2.4 (1.81s)
Fetching https://github.com/vapor/core.git
Fetching https://github.com/vapor/async.git
[1/2323] Fetching async
[234/22466] Fetching async, core
Fetched https://github.com/vapor/core.git (1.76s)
Fetched https://github.com/vapor/async.git (1.76s)
Computing version for https://github.com/vapor/async.git
Computed https://github.com/vapor/async.git at 1.0.0-rc.1.1 (2.42s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.10.1 (0.62s)
Fetching https://github.com/apple/swift-nio.git
[1/85947] Fetching swift-nio
Fetched https://github.com/apple/swift-nio.git (13.91s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.14.4 (14.60s)
Fetching https://github.com/apple/swift-nio-zlib-support.git
[1/15] Fetching swift-nio-zlib-support
Fetched https://github.com/apple/swift-nio-zlib-support.git (0.69s)
Computing version for https://github.com/apple/swift-nio-zlib-support.git
Computed https://github.com/apple/swift-nio-zlib-support.git at 1.0.0 (1.33s)
Creating working copy for https://github.com/vapor/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.10.1
Creating working copy for https://github.com/vapor/sockets
Working copy of https://github.com/vapor/sockets resolved at 2.2.4
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 1.14.4
Creating working copy for https://github.com/apple/swift-nio-zlib-support.git
Working copy of https://github.com/apple/swift-nio-zlib-support.git resolved at 1.0.0
Creating working copy for https://github.com/vapor/async.git
Working copy of https://github.com/vapor/async.git resolved at 1.0.0-rc.1.1
warning: 'spi-builder-workspace': Invalid Exclude '/Users/admin/builder/spi-builder-workspace/Sources/Mqtt/Examples': File not found.
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
error: multiple packages ('async' (from 'https://github.com/vapor/async.git'), 'core' (from 'https://github.com/vapor/core.git')) declare products with a conflicting name: 'Async’; product names need to be unique across the package graph
BUILD FAILURE 6.4 macosSpm