Build Information
Successful build of mio, reference v0.3.0 (8ccb32), with Swift 6.4 for macOS (SPM) on 2 Oct 2026 20:51:43 UTC.
Swift 6 data race errors: 0
Build Command
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64Build Log
========================================
RunAll
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Builder version: 5.1.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/akvilary/mio.git
Reference: v0.3.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/akvilary/mio
* tag v0.3.0 -> FETCH_HEAD
HEAD is now at 8ccb327 Add WHY_C_LAYER.md — why CMIO exists instead of pure Swift
Cloned https://github.com/akvilary/mio.git
Revision (git rev-parse @):
8ccb327e99af1650527425feac539f9cc6832142
SUCCESS checkout https://github.com/akvilary/mio.git at v0.3.0
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Build
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Selected platform: macosSpm
Swift version: 6.4
Building package at path: $PWD
https://github.com/akvilary/mio.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Pre-planning 1 / 125]
[Planning deferred tasks]
[24 / 37]
[26 / 38] CMIO
[31 / 51] CMIO-product
[42 / 51] MIO
[43 / 51] MIO
Build complete! (4.55 sec)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "mio",
"name" : "mio",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "MIO",
"targets" : [
"MIO"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "CMIO",
"targets" : [
"CMIO"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "MIOTests",
"module_type" : "SwiftTarget",
"name" : "MIOTests",
"path" : "Tests/MIOTests",
"sources" : [
"PollTests.swift"
],
"target_dependencies" : [
"MIO"
],
"type" : "test"
},
{
"c99name" : "MIO",
"module_type" : "SwiftTarget",
"name" : "MIO",
"path" : "Sources/MIO",
"product_memberships" : [
"MIO"
],
"sources" : [
"Events.swift",
"Interest.swift",
"Poll.swift",
"PollConstants.swift",
"PollError.swift",
"Ready.swift",
"Source.swift",
"TimerFd.swift",
"Token.swift",
"Waker.swift"
],
"target_dependencies" : [
"CMIO"
],
"type" : "library"
},
{
"c99name" : "CMIO",
"module_type" : "ClangTarget",
"name" : "CMIO",
"path" : "Sources/CMIO",
"product_memberships" : [
"MIO",
"CMIO"
],
"sources" : [
"wrapper.c"
],
"type" : "library"
}
],
"tools_version" : "6.2"
}
Done.