Swift Package IndexBuild Information
Failed to build Apple-Docs-MCP, reference v1.0.1 (a4cb12), with Swift 6.3 for macOS (SPM) on 18 Apr 2026 10:05:22 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.
========================================
Checkout
========================================
Clone URL: https://github.com/justindal/Apple-Docs-MCP.git
Reference: v1.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/justindal/Apple-Docs-MCP
* tag v1.0.1 -> FETCH_HEAD
HEAD is now at a4cb126 chore: set swift tools version to 6.0
Cloned https://github.com/justindal/Apple-Docs-MCP.git
Revision (git rev-parse @):
a4cb126c1299d91d80af8f1eeb815427b4ca0c08
SUCCESS checkout https://github.com/justindal/Apple-Docs-MCP.git at v1.0.1
Fetching https://github.com/apple/swift-collections.git
Fetching https://github.com/swift-server/swift-service-lifecycle.git
Fetching https://github.com/mattt/eventsource.git
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-async-algorithms.git
Fetching https://github.com/modelcontextprotocol/swift-sdk.git
Fetching https://github.com/apple/swift-log.git
[1/271] Fetching eventsource
[10/3016] Fetching eventsource, swift-service-lifecycle
[286/8617] Fetching eventsource, swift-service-lifecycle, swift-system
[287/14864] Fetching eventsource, swift-service-lifecycle, swift-system, swift-async-algorithms
[837/18337] Fetching eventsource, swift-service-lifecycle, swift-system, swift-async-algorithms, swift-sdk
[1009/24972] Fetching eventsource, swift-service-lifecycle, swift-system, swift-async-algorithms, swift-sdk, swift-log
[1743/48541] Fetching eventsource, swift-service-lifecycle, swift-system, swift-async-algorithms, swift-sdk, swift-log, swift-collections
Fetched https://github.com/apple/swift-async-algorithms.git from cache (1.08s)
[18570/42294] Fetching eventsource, swift-service-lifecycle, swift-system, swift-sdk, swift-log, swift-collections
Fetched https://github.com/apple/swift-system.git from cache (1.18s)
Fetched https://github.com/mattt/eventsource.git from cache (1.18s)
Fetched https://github.com/modelcontextprotocol/swift-sdk.git from cache (1.19s)
Fetched https://github.com/apple/swift-log.git from cache (1.19s)
[4631/26314] Fetching swift-service-lifecycle, swift-collections
Fetched https://github.com/apple/swift-collections.git from cache (2.13s)
Fetched https://github.com/swift-server/swift-service-lifecycle.git from cache (2.13s)
Computing version for https://github.com/swift-server/swift-service-lifecycle.git
Computed https://github.com/swift-server/swift-service-lifecycle.git at 2.9.1 (2.77s)
Computing version for https://github.com/modelcontextprotocol/swift-sdk.git
Computed https://github.com/modelcontextprotocol/swift-sdk.git at 0.10.2 (0.61s)
Computing version for https://github.com/apple/swift-async-algorithms.git
Computed https://github.com/apple/swift-async-algorithms.git at 1.1.1 (0.67s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.9.1 (0.65s)
Computing version for https://github.com/mattt/eventsource.git
Computed https://github.com/mattt/eventsource.git at 1.3.0 (0.61s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.61s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.3.0 (0.67s)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.3.0
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.6.4
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.9.1
Creating working copy for https://github.com/apple/swift-async-algorithms.git
Working copy of https://github.com/apple/swift-async-algorithms.git resolved at 1.1.1
Creating working copy for https://github.com/swift-server/swift-service-lifecycle.git
Working copy of https://github.com/swift-server/swift-service-lifecycle.git resolved at 2.9.1
Creating working copy for https://github.com/mattt/eventsource.git
Working copy of https://github.com/mattt/eventsource.git resolved at 1.3.0
Creating working copy for https://github.com/modelcontextprotocol/swift-sdk.git
Working copy of https://github.com/modelcontextprotocol/swift-sdk.git resolved at 0.10.2
========================================
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": "apple-docs-mcp",
"name": "Apple-Docs-MCP",
"url": "https://github.com/justindal/Apple-Docs-MCP.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Apple-Docs-MCP",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/justindal/Apple-Docs-MCP.git
[1/56] Fetching apple-docs-mcp
Fetched https://github.com/justindal/Apple-Docs-MCP.git from cache (0.57s)
Creating working copy for https://github.com/justindal/Apple-Docs-MCP.git
Working copy of https://github.com/justindal/Apple-Docs-MCP.git resolved at v1.0.1 (a4cb126)
warning: '.resolve-product-dependencies': dependency 'apple-docs-mcp' is not used by any target
Found 0 product dependencies
========================================
Build
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Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/justindal/Apple-Docs-MCP.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/18] Write sources
[12/18] Write Apple-Docs-MCP-entitlement.plist
[13/18] Compiling CSystem shims.c
[14/18] Write swift-version--6988338F2F200930.txt
[16/75] Compiling SystemPackage FilePathTempWindows.swift
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[23/76] Compiling InternalCollectionsUtilities UnsafeMutableBufferPointer+Extras.swift
[24/76] Compiling SystemPackage Errno.swift
[25/76] Compiling SystemPackage ErrnoWindows.swift
[26/76] Emitting module InternalCollectionsUtilities
[27/76] Compiling InternalCollectionsUtilities UnsafeRawBufferPointer+Extras.swift
[28/76] Compiling SystemPackage FileDescriptor.swift
[29/76] Compiling SystemPackage FileHelpers.swift
[30/76] Compiling SystemPackage FileOperations.swift
[31/76] Compiling SystemPackage FilePath.swift
[32/76] Compiling SystemPackage FilePathComponentView.swift
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[34/148] Compiling DequeModule _DequeSlot.swift
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[37/149] Compiling OrderedCollections OrderedSet+Codable.swift
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[52/155] Compiling OrderedCollections _HashTable+Testing.swift
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[70/155] Compiling OrderedCollections _HashTable+Bucket.swift
[71/155] Compiling OrderedCollections _HashTable+BucketIterator.swift
[72/155] Compiling OrderedCollections _HashTable.swift
[73/155] Compiling OrderedCollections OrderedDictionary+Elements.swift
[74/155] Emitting module DequeModule
[75/155] Compiling OrderedCollections OrderedSet+Hashable.swift
[76/155] Compiling OrderedCollections OrderedSet+Initializers.swift
[77/155] Compiling OrderedCollections OrderedSet+Insertions.swift
[78/155] Compiling OrderedCollections OrderedSet+Invariants.swift
[79/155] Compiling OrderedCollections OrderedSet+Partial MutableCollection.swift
[80/155] Compiling OrderedCollections OrderedSet+Partial RangeReplaceableCollection.swift
[87/158] Compiling Logging MetadataProvider.swift
[88/158] Compiling ConcurrencyHelpers LockedValueBox.swift
[89/158] Emitting module ConcurrencyHelpers
[90/158] Compiling ConcurrencyHelpers Lock.swift
[91/158] Compiling OrderedCollections _Hashtable+Header.swift
[92/158] Compiling OrderedCollections OrderedDictionary+Codable.swift
[93/158] Compiling OrderedCollections OrderedDictionary+CustomReflectable.swift
[94/158] Compiling OrderedCollections OrderedDictionary+Deprecations.swift
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[98/158] Compiling OrderedCollections OrderedDictionary+Partial RangeReplaceableCollection.swift
[99/158] Compiling OrderedCollections OrderedDictionary+Sendable.swift
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[101/158] Compiling OrderedCollections OrderedDictionary+Values.swift
[102/158] Compiling OrderedCollections OrderedDictionary.swift
[108/158] Compiling OrderedCollections OrderedDictionary+Invariants.swift
[121/161] Emitting module SystemPackage
[122/161] Compiling Logging LogHandler.swift
[123/161] Compiling Logging Locks.swift
[124/161] Emitting module Logging
[125/161] Compiling Logging Logging.swift
[142/161] Compiling SystemPackage Util+StringArray.swift
[143/161] Compiling SystemPackage Util.swift
[144/161] Compiling SystemPackage UtilConsumers.swift
[145/161] Compiling OrderedCollections OrderedSet+SubSequence.swift
[146/161] Compiling OrderedCollections OrderedSet+Testing.swift
[147/161] Compiling OrderedCollections OrderedSet+UnorderedView.swift
[148/161] Compiling OrderedCollections OrderedSet+UnstableInternals.swift
[149/161] Compiling OrderedCollections OrderedSet.swift
[150/161] Compiling OrderedCollections _UnsafeBitset.swift
[151/161] Emitting module OrderedCollections
[152/211] Emitting module UnixSignals
[153/211] Compiling UnixSignals UnixSignal.swift
[154/211] Compiling UnixSignals UnixSignalsSequence.swift
[155/211] Compiling AsyncAlgorithms AsyncAdjacentPairsSequence.swift
[156/211] Compiling AsyncAlgorithms AsyncBufferedByteIterator.swift
[157/211] Compiling AsyncAlgorithms AsyncChain2Sequence.swift
[158/211] Compiling AsyncAlgorithms AsyncChain3Sequence.swift
[159/211] Compiling AsyncAlgorithms AsyncChunkedByGroupSequence.swift
[160/211] Compiling AsyncAlgorithms AsyncChunkedOnProjectionSequence.swift
[161/216] Compiling AsyncAlgorithms AsyncChunksOfCountOrSignalSequence.swift
[162/216] Compiling AsyncAlgorithms AsyncChunksOfCountSequence.swift
[163/216] Compiling AsyncAlgorithms AsyncCompactedSequence.swift
[164/216] Compiling AsyncAlgorithms AsyncExclusiveReductionsSequence.swift
[165/216] Compiling AsyncAlgorithms AsyncInclusiveReductionsSequence.swift
[166/216] Compiling AsyncAlgorithms AsyncJoinedBySeparatorSequence.swift
[167/216] Compiling AsyncAlgorithms Locking.swift
[168/216] Compiling AsyncAlgorithms AsyncMerge2Sequence.swift
[169/216] Compiling AsyncAlgorithms AsyncMerge3Sequence.swift
[170/216] Compiling AsyncAlgorithms MergeStateMachine.swift
[171/216] Compiling AsyncAlgorithms MergeStorage.swift
[172/216] Compiling AsyncAlgorithms UnboundedBufferStorage.swift
[173/216] Compiling AsyncAlgorithms AsyncChannel.swift
[174/216] Compiling AsyncAlgorithms AsyncThrowingChannel.swift
[175/216] Compiling AsyncAlgorithms ChannelStateMachine.swift
[176/216] Compiling AsyncAlgorithms ChannelStorage.swift
[177/216] Compiling AsyncAlgorithms AsyncThrowingInclusiveReductionsSequence.swift
[178/216] Compiling AsyncAlgorithms AsyncTimerSequence.swift
[179/216] Compiling AsyncAlgorithms AsyncBufferSequence.swift
[180/216] Compiling AsyncAlgorithms BoundedBufferStateMachine.swift
[181/216] Compiling AsyncAlgorithms BoundedBufferStorage.swift
[182/216] Compiling AsyncAlgorithms UnboundedBufferStateMachine.swift
[183/216] Emitting module AsyncAlgorithms
[184/216] Compiling AsyncAlgorithms AsyncJoinedSequence.swift
[185/216] Compiling AsyncAlgorithms AsyncRemoveDuplicatesSequence.swift
[186/216] Compiling AsyncAlgorithms AsyncShareSequence.swift
[187/216] Compiling AsyncAlgorithms AsyncSyncSequence.swift
[188/216] Compiling AsyncAlgorithms AsyncThrottleSequence.swift
[189/216] Compiling AsyncAlgorithms AsyncThrowingExclusiveReductionsSequence.swift
[190/216] Compiling AsyncAlgorithms AsyncCombineLatest2Sequence.swift
[191/216] Compiling AsyncAlgorithms AsyncCombineLatest3Sequence.swift
[192/216] Compiling AsyncAlgorithms CombineLatestStateMachine.swift
[193/216] Compiling AsyncAlgorithms CombineLatestStorage.swift
[194/216] Compiling AsyncAlgorithms AsyncDebounceSequence.swift
[195/216] Compiling AsyncAlgorithms DebounceStateMachine.swift
[196/216] Compiling AsyncAlgorithms DebounceStorage.swift
[197/216] Compiling AsyncAlgorithms Dictionary.swift
[198/216] Compiling AsyncAlgorithms _TinyArray.swift
[199/216] Compiling AsyncAlgorithms AsyncInterspersedSequence.swift
[200/216] Compiling AsyncAlgorithms MultiProducerSingleConsumerAsyncChannel+Internal.swift
[201/216] Compiling AsyncAlgorithms MultiProducerSingleConsumerAsyncChannel.swift
[202/216] Compiling AsyncAlgorithms RangeReplaceableCollection.swift
[203/216] Compiling AsyncAlgorithms Rethrow.swift
[204/216] Compiling AsyncAlgorithms SetAlgebra.swift
[205/216] Compiling AsyncAlgorithms UnsafeTransfer.swift
[206/216] Compiling AsyncAlgorithms AsyncZip2Sequence.swift
[207/216] Compiling AsyncAlgorithms AsyncZip3Sequence.swift
[208/216] Compiling AsyncAlgorithms ZipStateMachine.swift
[209/216] Compiling AsyncAlgorithms ZipStorage.swift
[210/225] Compiling ServiceLifecycle ServiceGroupConfiguration.swift
[211/225] Compiling ServiceLifecycle ServiceRunnerError.swift
[212/225] Compiling EventSource AsyncSequence+Events.swift
[213/225] Compiling EventSource EventSource.swift
[214/225] Compiling EventSource AsyncEventsSequence.swift
[215/225] Emitting module EventSource
[216/244] Compiling ServiceLifecycle GracefulShutdown.swift
[217/244] Compiling ServiceLifecycle AsyncCancelOnGracefulShutdownSequence.swift
[218/244] Compiling ServiceLifecycle Service.swift
[219/244] Compiling ServiceLifecycle CancellationWaiter.swift
[220/244] Emitting module ServiceLifecycle
[221/244] Compiling ServiceLifecycle AsyncGracefulShutdownSequence.swift
[222/244] Compiling ServiceLifecycle ServiceGroup.swift
[223/244] Compiling MCP Prompts.swift
[224/244] Compiling MCP Resources.swift
[225/246] Compiling MCP Error.swift
[226/246] Compiling MCP ID.swift
[227/246] Emitting module MCP
[228/246] Compiling MCP Versioning.swift
[229/246] Compiling MCP Client.swift
[230/246] Compiling MCP Ping.swift
[231/246] Compiling MCP Value.swift
[232/246] Compiling MCP StdioTransport.swift
[233/246] Compiling MCP UnitInterval.swift
[234/246] Compiling MCP Transport.swift
[235/246] Compiling MCP HTTPClientTransport.swift
[236/246] Compiling MCP InMemoryTransport.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:581:33: error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
579 |
580 | Task { @MainActor in
581 | if !sendContinuationResumed {
| |- error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'sendContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
582 | sendContinuationResumed = true
583 | if let error = error {
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:812:29: error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
810 | content, _, isComplete, error in
811 | Task { @MainActor in
812 | if !receiveContinuationResumed {
| |- error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'receiveContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
813 | receiveContinuationResumed = true
814 | if let error = error {
[#SendingRisksDataRace]: <https://docs.swift.org/compiler/documentation/diagnostics/sending-risks-data-race>
[237/246] Compiling MCP NetworkTransport.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:581:33: error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
579 |
580 | Task { @MainActor in
581 | if !sendContinuationResumed {
| |- error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'sendContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
582 | sendContinuationResumed = true
583 | if let error = error {
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:812:29: error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
810 | content, _, isComplete, error in
811 | Task { @MainActor in
812 | if !receiveContinuationResumed {
| |- error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'receiveContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
813 | receiveContinuationResumed = true
814 | if let error = error {
[#SendingRisksDataRace]: <https://docs.swift.org/compiler/documentation/diagnostics/sending-risks-data-race>
[238/246] Compiling MCP Lifecycle.swift
[239/246] Compiling MCP Messages.swift
[240/246] Compiling MCP Sampling.swift
[241/246] Compiling MCP Data+Extensions.swift
[242/246] Compiling MCP Server.swift
[243/246] Compiling MCP Tools.swift
BUILD FAILURE 6.3 macosSpm