Swift Package IndexBuild Information
Failed to build swift-collections-differentiable, reference 2.0.0 (8f3d3c), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 19 Apr 2026 10:58:36 UTC.
Build Command
No build command. This typically means the build failed at an early stage where we determine the build command.Build 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/differentiable-swift/swift-collections-differentiable.git
Reference: 2.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/differentiable-swift/swift-collections-differentiable
* tag 2.0.0 -> FETCH_HEAD
HEAD is now at 8f3d3cb ci: remove Swift 6.1.3 add 6.3 and drop macOS 15 support
Cloned https://github.com/differentiable-swift/swift-collections-differentiable.git
Revision (git rev-parse @):
8f3d3cb46cc306236635cb42cd05adf51d227b9a
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/differentiable-swift/swift-collections-differentiable.git at 2.0.0
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Build
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Selected platform: macosXcodebuild
Swift version: 6.1
Building package at path: $PWD
https://github.com/differentiable-swift/swift-collections-differentiable.git
https://github.com/differentiable-swift/swift-collections-differentiable.git
{
"dependencies" : [
{
"identity" : "swift-collections",
"requirement" : {
"range" : [
{
"lower_bound" : "1.1.4",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-collections.git"
},
{
"identity" : "swift-differentiation",
"requirement" : {
"range" : [
{
"lower_bound" : "2.0.0",
"upper_bound" : "3.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/differentiable-swift/swift-differentiation.git"
}
],
"manifest_display_name" : "swift-collections-differentiable",
"name" : "swift-collections-differentiable",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "26.0"
},
{
"name" : "ios",
"version" : "26.0"
}
],
"products" : [
{
"name" : "CollectionsDifferentiable",
"targets" : [
"CollectionsDifferentiable"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "OrderedCollectionsDifferentiable",
"targets" : [
"OrderedCollectionsDifferentiable"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "OrderedCollectionsDifferentiableTests",
"module_type" : "SwiftTarget",
"name" : "OrderedCollectionsDifferentiableTests",
"path" : "Tests/OrderedCollectionsDifferentiableTests",
"sources" : [
"OrderedDictionary+DifferentiableTests.swift",
"OrderedDictionary+UpdateTests.swift",
"OrderedDictionaryValues+DifferentiableTests.swift"
],
"target_dependencies" : [
"OrderedCollectionsDifferentiable"
],
"type" : "test"
},
{
"c99name" : "OrderedCollectionsDifferentiable",
"module_type" : "SwiftTarget",
"name" : "OrderedCollectionsDifferentiable",
"path" : "Sources/OrderedCollectionsDifferentiable",
"product_dependencies" : [
"OrderedCollections",
"Differentiation"
],
"product_memberships" : [
"CollectionsDifferentiable",
"OrderedCollectionsDifferentiable"
],
"sources" : [
"OrderedCollections.swift",
"OrderedDictionary+Differentiable.swift",
"OrderedDictionary+Update.swift",
"OrderedDictionaryValues+Differentiable.swift"
],
"type" : "library"
},
{
"c99name" : "CollectionsDifferentiable",
"module_type" : "SwiftTarget",
"name" : "CollectionsDifferentiable",
"path" : "Sources/CollectionsDifferentiable",
"product_dependencies" : [
"Collections"
],
"product_memberships" : [
"CollectionsDifferentiable"
],
"sources" : [
"Collections.swift"
],
"target_dependencies" : [
"OrderedCollectionsDifferentiable"
],
"type" : "library"
}
],
"tools_version" : "6.1"
}
Command line invocation:
/Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/differentiable-swift/swift-differentiation.git
Fetching from https://github.com/apple/swift-collections.git (cached)
Fetching from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolve Package Graph
Updating from https://github.com/differentiable-swift/swift-differentiation.git
Updating from https://github.com/apple/swift-collections.git
Updating from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolve Package Graph
Updating from https://github.com/apple/swift-collections.git
Updating from https://github.com/differentiable-swift/swift-differentiation.git
Updating from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolved source packages:
spi-builder-workspace: (null)
2026-04-19 03:58:35.134 xcodebuild[519:2926] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-19-04_03-58-0035.xcresult
xcodebuild: error: Could not resolve package dependencies:
Failed to resolve dependencies Dependencies could not be resolved because 'swift-differentiation-stdlib' contains incompatible tools version (6.2.0) and root depends on 'swift-differentiation' 2.0.0..<3.0.0.
'swift-differentiation' >= 2.0.0 practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 and 'swift-differentiation' 2.0.1 depends on 'swift-differentiation-stdlib' 602.0.1..<603.0.0.
'swift-differentiation' {2.0.0, 2.0.2..<3.0.0} practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because no versions of 'swift-differentiation' match the requirement 2.0.2..<3.0.0 and 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0.
Command line invocation:
/Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Updating from https://github.com/differentiable-swift/swift-differentiation.git
Updating from https://github.com/apple/swift-collections.git
Updating from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolved source packages:
spi-builder-workspace: (null)
2026-04-19 03:58:36.905 xcodebuild[783:4198] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-19-04_03-58-0036.xcresult
xcodebuild: error: Could not resolve package dependencies:
Failed to resolve dependencies Dependencies could not be resolved because 'swift-differentiation-stdlib' contains incompatible tools version (6.2.0) and root depends on 'swift-differentiation' 2.0.0..<3.0.0.
'swift-differentiation' >= 2.0.0 practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 and 'swift-differentiation' 2.0.1 depends on 'swift-differentiation-stdlib' 602.0.1..<603.0.0.
'swift-differentiation' {2.0.0, 2.0.2..<3.0.0} practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because no versions of 'swift-differentiation' match the requirement 2.0.2..<3.0.0 and 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0.
BUILD FAILURE 6.1 macosXcodebuild