Swift Package IndexBuild Information
Failed to build Arrow, reference master (32f1dd), with Swift 6.3 for macOS (SPM) on 15 Apr 2026 02:06:51 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build Log
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/freshOS/Arrow.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/freshOS/Arrow
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at 32f1ddf Update README.md
Cloned https://github.com/freshOS/Arrow.git
Revision (git rev-parse @):
32f1ddfe4160261eb0d0ddd63d52cc49babe7f00
SUCCESS checkout https://github.com/freshOS/Arrow.git at master
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ResolveProductDependencies
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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": "arrow",
"name": "Arrow",
"url": "https://github.com/freshOS/Arrow.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Arrow",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/freshOS/Arrow.git
[1/1458] Fetching arrow
Fetched https://github.com/freshOS/Arrow.git from cache (1.96s)
Creating working copy for https://github.com/freshOS/Arrow.git
Working copy of https://github.com/freshOS/Arrow.git resolved at master (32f1ddf)
warning: '.resolve-product-dependencies': dependency 'arrow' is not used by any target
Found 0 product dependencies
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Build
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Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/freshOS/Arrow.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/3] Copying PrivacyInfo.xcprivacy
[1/3] Write sources
[2/3] Write swift-version--6988338F2F200930.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/8] Compiling Arrow JSON.swift
[5/8] Emitting module Arrow
/Users/admin/builder/spi-builder-workspace/Sources/Arrow/Arrow.swift:63:25: error: static property 'dateFormatter' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
61 | public actor Arrow {
62 |
63 | internal static var dateFormatter: DateFormatter? = DateFormatter()
| |- error: static property 'dateFormatter' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
| |- note: convert 'dateFormatter' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'dateFormatter' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
64 | internal static var useReferenceDate = false
65 |
/Users/admin/builder/spi-builder-workspace/Sources/Arrow/Arrow.swift:64:25: error: static property 'useReferenceDate' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
62 |
63 | internal static var dateFormatter: DateFormatter? = DateFormatter()
64 | internal static var useReferenceDate = false
| |- error: static property 'useReferenceDate' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
| |- note: convert 'useReferenceDate' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'useReferenceDate' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
65 |
66 | /// Sets the defaut dateFormat for parsing NSDates.
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
[6/8] Compiling Arrow resource_bundle_accessor.swift
[7/8] Compiling Arrow Extensions.swift
[8/8] Compiling Arrow Arrow.swift
/Users/admin/builder/spi-builder-workspace/Sources/Arrow/Arrow.swift:63:25: error: static property 'dateFormatter' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
61 | public actor Arrow {
62 |
63 | internal static var dateFormatter: DateFormatter? = DateFormatter()
| |- error: static property 'dateFormatter' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
| |- note: convert 'dateFormatter' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'dateFormatter' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
64 | internal static var useReferenceDate = false
65 |
/Users/admin/builder/spi-builder-workspace/Sources/Arrow/Arrow.swift:64:25: error: static property 'useReferenceDate' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
62 |
63 | internal static var dateFormatter: DateFormatter? = DateFormatter()
64 | internal static var useReferenceDate = false
| |- error: static property 'useReferenceDate' is not concurrency-safe because it is nonisolated global shared mutable state [#MutableGlobalVariable]
| |- note: convert 'useReferenceDate' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'useReferenceDate' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
65 |
66 | /// Sets the defaut dateFormat for parsing NSDates.
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
BUILD FAILURE 6.3 macosSpm