Swift Package IndexBuild Information
Successful build of Uncertain, reference main (962d4c), with Swift 6.3 for macOS (SPM) on 16 Apr 2026 14:54:23 UTC.
Swift 6 data race errors: 0
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mattt/Uncertain.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mattt/Uncertain
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 962d4cc Add link to NSHipster blog post (#11)
Cloned https://github.com/mattt/Uncertain.git
Revision (git rev-parse @):
962d4cc802a2b179685d33919cb02588218d063e
SUCCESS checkout https://github.com/mattt/Uncertain.git at main
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
"identity": ".resolve-product-dependencies",
"name": "resolve-dependencies",
"url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"traits": [
"default"
],
"dependencies": [
{
"identity": "uncertain",
"name": "Uncertain",
"url": "https://github.com/mattt/Uncertain.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Uncertain",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/mattt/Uncertain.git
[1/124] Fetching uncertain
Fetched https://github.com/mattt/Uncertain.git from cache (0.66s)
Creating working copy for https://github.com/mattt/Uncertain.git
Working copy of https://github.com/mattt/Uncertain.git resolved at main (962d4cc)
warning: '.resolve-product-dependencies': dependency 'uncertain' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/mattt/Uncertain.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--6988338F2F200930.txt
[3/4] Compiling Uncertain Uncertain.swift
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:132:25: warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
130 | left: lhs.node,
131 | threshold: rhs,
132 | comparison: !=
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
133 | )
134 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:163:25: warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
161 | left: lhs.node,
162 | threshold: rhs,
163 | comparison: >
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
164 | )
165 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:177:25: warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
175 | left: lhs.node,
176 | threshold: rhs,
177 | comparison: <
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
178 | )
179 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:191:25: warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
189 | left: lhs.node,
190 | threshold: rhs,
191 | comparison: >=
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
192 | )
193 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:205:25: warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
203 | left: lhs.node,
204 | threshold: rhs,
205 | comparison: <=
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> Bool' may introduce data races
206 | )
207 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:235:24: warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
233 | left: lhs.node,
234 | right: rhs.node,
235 | operation: +
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
236 | )
237 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:249:24: warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
247 | left: lhs.node,
248 | right: rhs.node,
249 | operation: -
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
250 | )
251 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:263:24: warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
261 | left: lhs.node,
262 | right: rhs.node,
263 | operation: *
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
264 | )
265 |
/Users/admin/builder/spi-builder-workspace/Sources/Uncertain/Uncertain.swift:337:24: warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
335 | left: lhs.node,
336 | right: rhs.node,
337 | operation: /
| `- warning: converting non-Sendable function value to '@Sendable (T, T) -> T' may introduce data races
338 | )
339 |
[4/4] Emitting module Uncertain
Build complete! (5.06s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "Uncertain",
"name" : "Uncertain",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "Uncertain",
"targets" : [
"Uncertain"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "UncertainTests",
"module_type" : "SwiftTarget",
"name" : "UncertainTests",
"path" : "Tests/UncertainTests",
"sources" : [
"UncertainTests.swift"
],
"target_dependencies" : [
"Uncertain"
],
"type" : "test"
},
{
"c99name" : "Uncertain",
"module_type" : "SwiftTarget",
"name" : "Uncertain",
"path" : "Sources/Uncertain",
"product_memberships" : [
"Uncertain"
],
"sources" : [
"Uncertain.swift"
],
"type" : "library"
}
],
"tools_version" : "6.0"
}
Done.