Swift Package IndexBuild Information
Successful build of DictionaryCoder, reference 1.2.0 (c356e0), with Swift 6.1 for macOS (SPM) on 29 Jun 2026 14:40:08 UTC.
Swift 6 data race errors: 1
Build Command
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCapturesBuild Log
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RunAll
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Builder version: undefined version: run 'make version' to update
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/oha-4/DictionaryCoder.git
Reference: 1.2.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/oha-4/DictionaryCoder
* tag 1.2.0 -> FETCH_HEAD
HEAD is now at c356e01 Add DictionaryValueKind for exhaustive switching
Cloned https://github.com/oha-4/DictionaryCoder.git
Revision (git rev-parse @):
c356e016d98e18528d7402a3c33d3c7340f24028
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/oha-4/DictionaryCoder.git at 1.2.0
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Build
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Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/oha-4/DictionaryCoder.git
https://github.com/oha-4/DictionaryCoder.git
{
"dependencies" : [
],
"manifest_display_name" : "DictionaryCoder",
"name" : "DictionaryCoder",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "DictionaryCoder",
"targets" : [
"DictionaryCoder"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "DictionaryCoderTests",
"module_type" : "SwiftTarget",
"name" : "DictionaryCoderTests",
"path" : "Tests/DictionaryCoderTests",
"sources" : [
"DictionaryDecoderTests.swift",
"DictionaryEncoderTests.swift",
"DictionaryValueKindTests.swift",
"ErrorHandlingTests.swift",
"KeyedContainerTests.swift",
"RoundTripTests.swift",
"ScalarCoverageTests.swift",
"StrategyTests.swift",
"TestObject.swift",
"TestSupport.swift",
"UnkeyedContainerTests.swift"
],
"target_dependencies" : [
"DictionaryCoder"
],
"type" : "test"
},
{
"c99name" : "DictionaryCoder",
"module_type" : "SwiftTarget",
"name" : "DictionaryCoder",
"path" : "Sources/DictionaryCoder",
"product_memberships" : [
"DictionaryCoder"
],
"sources" : [
"DictionaryCodingKey.swift",
"DictionaryDecoder.swift",
"DictionaryEncoder.swift",
"DictionaryValue.swift",
"ISO8601Formatter.swift"
],
"type" : "library"
}
],
"tools_version" : "5.7"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/8] Compiling DictionaryCoder ISO8601Formatter.swift
/Users/admin/builder/spi-builder-workspace/Sources/DictionaryCoder/ISO8601Formatter.swift:10:5: warning: let '_iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
8 | import Foundation
9 |
10 | let _iso8601Formatter = ISO8601DateFormatter()
| |- warning: let '_iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let '_iso8601Formatter' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSISO8601DateFormatter.h:46:12: note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
44 |
45 | API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0))
46 | @interface NSISO8601DateFormatter : NSFormatter <NSSecureCoding> {
| `- note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
47 | @private
48 | CFDateFormatterRef _formatter;
[4/8] Compiling DictionaryCoder DictionaryValue.swift
[5/8] Compiling DictionaryCoder DictionaryDecoder.swift
[6/8] Compiling DictionaryCoder DictionaryCodingKey.swift
[7/8] Compiling DictionaryCoder DictionaryEncoder.swift
[8/8] Emitting module DictionaryCoder
/Users/admin/builder/spi-builder-workspace/Sources/DictionaryCoder/ISO8601Formatter.swift:10:5: warning: let '_iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
8 | import Foundation
9 |
10 | let _iso8601Formatter = ISO8601DateFormatter()
| |- warning: let '_iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'ISO8601DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make let '_iso8601Formatter' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSISO8601DateFormatter.h:46:12: note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
44 |
45 | API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0))
46 | @interface NSISO8601DateFormatter : NSFormatter <NSSecureCoding> {
| `- note: class 'ISO8601DateFormatter' does not conform to the 'Sendable' protocol
47 | @private
48 | CFDateFormatterRef _formatter;
Build complete! (4.09s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "DictionaryCoder",
"name" : "DictionaryCoder",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "DictionaryCoder",
"targets" : [
"DictionaryCoder"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "DictionaryCoderTests",
"module_type" : "SwiftTarget",
"name" : "DictionaryCoderTests",
"path" : "Tests/DictionaryCoderTests",
"sources" : [
"DictionaryDecoderTests.swift",
"DictionaryEncoderTests.swift",
"DictionaryValueKindTests.swift",
"ErrorHandlingTests.swift",
"KeyedContainerTests.swift",
"RoundTripTests.swift",
"ScalarCoverageTests.swift",
"StrategyTests.swift",
"TestObject.swift",
"TestSupport.swift",
"UnkeyedContainerTests.swift"
],
"target_dependencies" : [
"DictionaryCoder"
],
"type" : "test"
},
{
"c99name" : "DictionaryCoder",
"module_type" : "SwiftTarget",
"name" : "DictionaryCoder",
"path" : "Sources/DictionaryCoder",
"product_memberships" : [
"DictionaryCoder"
],
"sources" : [
"DictionaryCodingKey.swift",
"DictionaryDecoder.swift",
"DictionaryEncoder.swift",
"DictionaryValue.swift",
"ISO8601Formatter.swift"
],
"type" : "library"
}
],
"tools_version" : "5.7"
}
Done.