Swift Package IndexBuild Information
Failed to build MCP, reference v2.1.2 (ff6b02), with Swift 6.3 for Android on 23 Oct 2026 19:27:43 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-54344849-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1Build Log
========================================
RunAll
========================================
Builder version: 5.1.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/tannerdsilva/swift-mcp.git
Reference: v2.1.2
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/tannerdsilva/swift-mcp
* tag v2.1.2 -> FETCH_HEAD
HEAD is now at ff6b02e fix(client): the shutdown ladder follows the child's placement
Cloned https://github.com/tannerdsilva/swift-mcp.git
Revision (git rev-parse @):
ff6b02e2f44071a72352e7664033f2b2183fef8f
SUCCESS checkout https://github.com/tannerdsilva/swift-mcp.git at v2.1.2
========================================
Build
========================================
Selected platform: android
Swift version: 6.3
Building package at path: $PWD
https://github.com/tannerdsilva/swift-mcp.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344849-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1
android-6.3-latest: Pulling from saguaro1/spi-images
Digest: sha256:1259d966e40d034d138a282ea8b980b108763342a7ff8ac7ef483c73e99068f3
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:android-6.3-latest
Fetching https://github.com/tannerdsilva/SwiftSlash.git
Fetching https://github.com/swift-server/swift-service-lifecycle.git
Fetching https://github.com/swiftlang/swift-syntax.git
Fetching https://github.com/apple/swift-docc-plugin.git
Fetching https://github.com/tannerdsilva/QuickJSON.git
Fetching https://github.com/apple/swift-argument-parser.git
[1/534] Fetching quickjson
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Fetching https://github.com/apple/swift-log.git
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Fetched https://github.com/tannerdsilva/QuickJSON.git from cache (0.55s)
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Fetched https://github.com/tannerdsilva/SwiftSlash.git from cache (5.43s)
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Fetched https://github.com/apple/swift-docc-plugin.git from cache (5.44s)
Fetched https://github.com/swiftlang/swift-syntax.git from cache (5.47s)
Fetched https://github.com/apple/swift-nio.git from cache (5.20s)
Computing version for https://github.com/tannerdsilva/SwiftSlash.git
Computed https://github.com/tannerdsilva/SwiftSlash.git at 6.0.0 (5.94s)
Computing version for https://github.com/tannerdsilva/QuickJSON.git
Computed https://github.com/tannerdsilva/QuickJSON.git at 2.0.3 (0.13s)
Fetching https://github.com/ibireme/yyjson.git
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Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 603.0.2 (1.86s)
Computing version for https://github.com/ibireme/yyjson.git
Computed https://github.com/ibireme/yyjson.git at 0.12.0 (0.16s)
Computing version for https://github.com/apple/swift-argument-parser.git
Computed https://github.com/apple/swift-argument-parser.git at 1.8.2 (0.15s)
Computing version for https://github.com/apple/swift-docc-plugin.git
Computed https://github.com/apple/swift-docc-plugin.git at 1.5.0 (0.17s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
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Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.73s)
Computing version for https://github.com/swift-server/swift-service-lifecycle.git
Computed https://github.com/swift-server/swift-service-lifecycle.git at 2.13.0 (0.13s)
Fetching https://github.com/apple/swift-async-algorithms.git
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Computing version for https://github.com/apple/swift-async-algorithms.git
Computed https://github.com/apple/swift-async-algorithms.git at 1.1.7 (0.91s)
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Computing version for https://github.com/apple/swift-collections.git
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Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.16.2 (0.15s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.104.0 (0.26s)
Fetching https://github.com/apple/swift-atomics.git
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Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.1 (0.83s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.8.1 (0.17s)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.7.4
Creating working copy for https://github.com/ibireme/yyjson.git
Working copy of https://github.com/ibireme/yyjson.git resolved at 0.12.0
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 603.0.2
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 1.1.7
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.1
Creating working copy for https://github.com/apple/swift-docc-plugin.git
Working copy of https://github.com/apple/swift-docc-plugin.git resolved at 1.5.0
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.8.1
Creating working copy for https://github.com/tannerdsilva/SwiftSlash.git
Working copy of https://github.com/tannerdsilva/SwiftSlash.git resolved at 6.0.0
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.16.2
Creating working copy for https://github.com/tannerdsilva/QuickJSON.git
Working copy of https://github.com/tannerdsilva/QuickJSON.git resolved at 2.0.3
Creating working copy for https://github.com/apple/swift-argument-parser.git
Working copy of https://github.com/apple/swift-argument-parser.git resolved at 1.8.2
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.104.0
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 2.13.0
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/603.0.2/swift-6.3.2-RELEASE-ubuntu_noble_x86_64-MacroSupport.tar.gz
Downloaded https://download.swift.org/prebuilts/swift-syntax/603.0.2/swift-6.3.2-RELEASE-ubuntu_noble_x86_64-MacroSupport.tar.gz (0.19s)
[1/1] Compiling plugin GenerateManual
[2/2] Compiling plugin GenerateDoccReference
[3/3] Compiling plugin Swift-DocC Preview
[4/4] Compiling plugin Swift-DocC
Building for debugging...
[4/198] Write sources
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[55/198] Write swift-version-272D24FF697CF451.txt
[56/198] Compiling CNIOWindows WSAStartup.c
[56/198] Compiling CNIOWindows shim.c
[57/198] Compiling CNIOWASI CNIOWASI.c
[59/198] Compiling CNIOPosix event_loop_id.c
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[62/212] Compiling CNIOLinux shim.c
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[65/216] Emitting module SwiftSyntax600
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[100/297] Compiling CNIOLinux liburing_shims.c
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[109/340] Compiling CNIOLLHTTP c_nio_http.c
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[127/340] Compiling Logging MetadataProvider.swift
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[129/340] Emitting module _NIODataStructures
[130/340] Compiling Logging Logger.swift
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[143/342] Emitting module Logging
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[149/378] Compiling QuickJSON LoggerSupport.swift
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[159/380] Emitting module InternalCollectionsUtilities
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[169/381] Compiling Atomics Unmanaged extensions.swift
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[173/385] Compiling SpanPreview OutputSpan+InputSpanHelpers.swift
[174/385] Emitting module SpanPreview
[175/385] Compiling SpanPreview InputSpan.swift
[176/385] Compiling SpanPreview MutableSpan+InputSpanHelpers.swift
[178/386] Compiling QuickJSON QuickJSON.swift
[179/386] Compiling QuickJSON RootDecoder.swift
[181/386] Compiling QuickJSON SingleValueEncoder.swift
[182/387] Compiling UnixSignals UnixSignalsSequence.swift
[183/387] Compiling QuickJSON UnkeyedDecoder.swift
[184/388] Emitting module QuickJSON
[190/473] Compiling DequeModule Deque+Equatable.swift
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[235/500] Compiling DequeModule Deque.swift
[242/502] Compiling SwiftSlashOneShotLatch OneShotLatch.swift
[243/502] Emitting module SwiftSlashOneShotLatch
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[262/505] Compiling DequeModule Deque+Codable.swift
[263/505] Compiling DequeModule Deque+Collection.swift
[264/505] Compiling DequeModule Deque+CustomReflectable.swift
[265/505] Compiling DequeModule Deque+Descriptions.swift
[274/505] Emitting module SwiftSlashFuture
[274/505] Compiling c-atomics.c
[276/505] Emitting module Atomics
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[287/509] Compiling DequeModule UniqueDeque.swift
[288/509] Compiling DequeModule _DequeSlot.swift
[289/509] Compiling DequeModule _UnsafeDequeHandle.swift
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[291/509] Compiling OrderedCollections OrderedSet+RandomAccessCollection.swift
[292/509] Compiling OrderedCollections OrderedSet+ReserveCapacity.swift
[293/509] Compiling OrderedCollections OrderedSet+Hashable.swift
[294/509] Compiling OrderedCollections OrderedSet+Initializers.swift
[295/509] Compiling OrderedCollections OrderedSet+Insertions.swift
[296/509] Compiling OrderedCollections OrderedSet+Invariants.swift
[297/509] Compiling OrderedCollections OrderedSet+Move.swift
[298/509] Compiling OrderedCollections OrderedSet+Partial MutableCollection.swift
[299/509] Compiling OrderedCollections OrderedSet+Partial RangeReplaceableCollection.swift
[300/509] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formIntersection.swift
[301/509] Compiling SwiftSlashFIFO FIFOIterators.swift
[302/509] Compiling SwiftSlashFuture Future.swift
[322/518] Compiling SwiftSlashFIFO FIFOCore.swift
[323/525] Compiling OrderedCollections OrderedSet+Sendable.swift
[324/525] Compiling OrderedCollections OrderedSet+SubSequence.swift
[325/525] Compiling OrderedCollections OrderedSet+Testing.swift
[326/525] Compiling OrderedCollections OrderedSet+UnorderedView.swift
[327/525] Compiling OrderedCollections OrderedSet+UnstableInternals.swift
[328/525] Compiling OrderedCollections OrderedSet.swift
[329/525] Compiling SwiftSyntax SyntaxNodesC.swift
[338/526] Compiling SwiftSlashFIFO FIFO.swift
[339/526] Emitting module SwiftSlashFIFO
[341/527] Compiling NIOConcurrencyHelpers NIOLockedValueBox.swift
[343/532] Compiling NIOConcurrencyHelpers NIOLock.swift
/host/spi-builder-workspace/.build/checkouts/SwiftSlash/Sources/__cswiftslash_threads/__cswiftslash_threads.c:23:2: error: call to undeclared function 'pthread_setcancelstate'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
23 | pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
| ^
/host/spi-builder-workspace/.build/checkouts/SwiftSlash/Sources/__cswiftslash_threads/__cswiftslash_threads.c:23:25: error: use of undeclared identifier 'PTHREAD_CANCEL_DISABLE'
23 | pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
| ^~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/.build/checkouts/SwiftSlash/Sources/__cswiftslash_threads/__cswiftslash_threads.c:24:2: error: call to undeclared function 'pthread_setcanceltype'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
24 | pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL);
| ^
/host/spi-builder-workspace/.build/checkouts/SwiftSlash/Sources/__cswiftslash_threads/__cswiftslash_threads.c:24:24: error: use of undeclared identifier 'PTHREAD_CANCEL_DEFERRED'
24 | pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL);
| ^~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/.build/checkouts/SwiftSlash/Sources/__cswiftslash_threads/__cswiftslash_threads.c:30:25: error: use of undeclared identifier 'PTHREAD_CANCEL_ENABLE'
30 | pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
| ^~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/.build/checkouts/SwiftSlash/Sources/__cswiftslash_threads/__cswiftslash_threads.c:31:2: error: call to undeclared function 'pthread_testcancel'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
31 | pthread_testcancel();
| ^
6 errors generated.
[343/532] Compiling __cswiftslash_threads __cswiftslash_threads.c
[344/532] Compiling SwiftSlashPThread Workspace.swift
[344/532] Compiling yyjson.c
[345/532] Compiling NIOConcurrencyHelpers NIOThreadPoolWorkAvailable.swift
BUILD FAILURE 6.3 android