Swift Package IndexBuild Information
Failed to build swift-sdk-generator, reference main (6f22ba), with Swift 6.4 for Wasm on 1 Nov 2026 14:07:41 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/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:wasm-6.4-latest swift build --swift-sdk swift-6.4.0-RELEASE_wasm 2>&1Build Log
========================================
RunAll
========================================
Builder version: 5.1.4
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swiftlang/swift-sdk-generator.git
Reference: main
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/swiftlang/swift-sdk-generator
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 6f22baa bump `swiftlang-actions` group with 2 updates (#285)
Cloned https://github.com/swiftlang/swift-sdk-generator.git
Revision (git rev-parse @):
6f22baa661e666506dae8259fa7349f3a97ea7a2
SUCCESS checkout https://github.com/swiftlang/swift-sdk-generator.git at main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.4
Building package at path: $PWD
https://github.com/swiftlang/swift-sdk-generator.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.0-RELEASE_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:0ad19d16955074ecc72bbe910025b19c4e4614184c1a48afc82660d4c7620121
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Fetching https://github.com/apple/swift-async-algorithms.git
Fetching https://github.com/apple/swift-atomics.git
Fetching https://github.com/apple/swift-crypto.git
Fetching https://github.com/apple/swift-collections.git
Fetching https://github.com/apple/swift-log.git
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Fetched https://github.com/apple/swift-system (0.79s)
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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 1.0.1 (3.89s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.1 (0.15s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.8.2 (0.16s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.7.5 (0.24s)
Computing version for https://github.com/apple/swift-system
Computed https://github.com/apple/swift-system at 1.8.1 (0.18s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.16.2 (0.16s)
Computing version for https://github.com/apple/swift-crypto.git
Computed https://github.com/apple/swift-crypto.git at 3.15.1 (0.93s)
Fetching https://github.com/apple/swift-asn1.git
[1/2051] Fetching swift-asn1
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Computing version for https://github.com/apple/swift-asn1.git
Computed https://github.com/apple/swift-asn1.git at 1.7.3 (1.30s)
Computing version for https://github.com/swift-server/async-http-client.git
Computed https://github.com/swift-server/async-http-client.git at 1.36.2 (0.17s)
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Fetching https://github.com/apple/swift-configuration.git
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Fetched https://github.com/apple/swift-nio-extras.git (0.55s)
Fetched https://github.com/apple/swift-nio-ssl.git (1.90s)
Computing version for https://github.com/apple/swift-algorithms.git
Computed https://github.com/apple/swift-algorithms.git at 1.2.1 (2.09s)
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Computed https://github.com/apple/swift-nio-transport-services.git at 1.28.0 (0.17s)
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Computed https://github.com/apple/swift-service-context.git at 1.5.1 (0.16s)
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Computed https://github.com/apple/swift-configuration.git at 1.4.0 (0.22s)
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Computed https://github.com/apple/swift-atomics.git at 1.3.1 (0.00s)
Computed https://github.com/apple/swift-argument-parser at 1.8.2 (0.00s)
Computed https://github.com/apple/swift-collections.git at 1.7.5 (0.00s)
Computed https://github.com/apple/swift-system at 1.8.1 (0.00s)
Computed https://github.com/apple/swift-log.git at 1.16.2 (0.00s)
Computed https://github.com/apple/swift-crypto.git at 3.15.1 (0.00s)
Computed https://github.com/apple/swift-asn1.git at 1.7.3 (0.00s)
Computed https://github.com/swift-server/async-http-client.git at 1.36.2 (0.00s)
Computed https://github.com/apple/swift-algorithms.git at 1.2.1 (0.00s)
Computed https://github.com/apple/swift-numerics.git at 1.1.1 (0.00s)
Computed https://github.com/apple/swift-nio-transport-services.git at 1.28.0 (0.00s)
Computed https://github.com/apple/swift-nio.git at 2.104.0 (0.00s)
Computed https://github.com/apple/swift-service-context.git at 1.5.1 (0.00s)
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Computed https://github.com/apple/swift-configuration.git at 1.0.0 (0.22s)
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Creating working copy for https://github.com/apple/swift-service-context.git
Working copy of https://github.com/apple/swift-service-context.git resolved at 1.5.1
Creating working copy for https://github.com/apple/swift-crypto.git
Working copy of https://github.com/apple/swift-crypto.git resolved at 3.15.1
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Working copy of https://github.com/apple/swift-nio.git resolved at 2.104.0
Creating working copy for https://github.com/apple/swift-nio-extras.git
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Working copy of https://github.com/apple/swift-configuration.git resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-http-types.git
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Working copy of https://github.com/apple/swift-log.git resolved at 1.16.2
Creating working copy for https://github.com/apple/swift-collections.git
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Building for debugging...
[Computing dependencies]
[Constructing description]
[Pre-planning 1 / 1765]
[Planning 1259 / 1765]
[Planning deferred tasks]
[Constructing 970 / 4512]
[Starting]
[7 / 1330]
[259 / 1334] NIOConcurrencyHelpers
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[274 / 1386] _NIOBase64
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[291 / 1404] RealModule
[313 / 1404] SystemPackage
[313 / 1404] InternalCollectionsUtilities
[315 / 1404] CryptoBoringWrapper
[330 / 1404] SystemPackage
[336 / 1405] _NIOBase64
[338 / 1405] _NIODataStructures
[339 / 1405] RealModule
[346 / 1405] NIOConcurrencyHelpers
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[372 / 1409] SpanPreview
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[380 / 1409] Instrumentation
[384 / 1409] CryptoBoringWrapper
[392 / 1411] CryptoBoringWrapper
[395 / 1411] Crypto
In file included from /host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c:16:
[1m/root/.swiftpm/swift-sdks/swift-6.4.0-RELEASE_wasm.artifactbundle/swift-6.4.0-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/signal.h:2:2: [0m[0;1;31merror: [0m[1m"wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"[0m
2 | #error [0;32m"wasm lacks signal support; to enable minimal signal emulation, \[0m
| [0;1;32m ^
[0m[1m/host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c:24:10: [0m[0;1;31mfatal error: [0m[1m'sys/wait.h' file not found[0m
24 | #include <sys/wait.h>[0m
| [0;1;32m ^~~~~~~~~~~~
[0m2 errors generated.
error: CompileC /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-sdk-generator.build/Debug-webassembly-wasm32/CProcessSpawnSync-t.build/Objects-normal/wasm32/spawner.o /host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c normal wasm32 c com.apple.compilers.llvm.clang.1_0.compiler failed with a nonzero exit code. Command line: cd /host
Using response file: /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-sdk-generator.build/Debug-webassembly-wasm32/CProcessSpawnSync-t.build/Objects-normal/wasm32/9f65232cb83f8421e3a495a5062eba382369c975104ee97bafc405ab795bfc5e-common-args.resp
/usr/bin/clang -x c -target wasm32-unknown-wasip1 -fmessage-length\=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit\=0 -fcolor-diagnostics -Wno-trigraphs -Wno-missing-field-initializers -Wno-missing-prototypes -Wno-return-type -Wno-missing-braces -Wparentheses -Wswitch -Wno-unused-function -Wno-unused-label -Wno-unused-parameter -Wno-unused-variable -Wunused-value -Wno-empty-body -Wno-uninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wno-constant-conversion -Wno-int-conversion -Wno-bool-conversion -Wno-enum-conversion -Wno-float-conversion -Wno-non-literal-null-conversion -Wno-objc-literal-conversion -Wno-shorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-implicit-fallthrough -fstrict-aliasing -Wdeprecated-declarations -Wno-sign-conversion -Wno-infinite-recursion -Wno-comma -Wno-block-capture-autoreleasing -Wno-strict-prototypes -Wno-semicolon-before-method-body --sysroot /root/.swiftpm/swift-sdks/swift-6.4.0-RELEASE_wasm.artifactbundle/swift-6.4.0-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk @/host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-sdk-generator.build/Debug-webassembly-wasm32/CProcessSpawnSync-t.build/Objects-normal/wasm32/9f65232cb83f8421e3a495a5062eba382369c975104ee97bafc405ab795bfc5e-common-args.resp -MMD -MT dependencies -MF /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-sdk-generator.build/Debug-webassembly-wasm32/CProcessSpawnSync-t.build/Objects-normal/wasm32/spawner.d --serialize-diagnostics /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-sdk-generator.build/Debug-webassembly-wasm32/CProcessSpawnSync-t.build/Objects-normal/wasm32/spawner.dia -c /host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-sdk-generator.build/Debug-webassembly-wasm32/CProcessSpawnSync-t.build/Objects-normal/wasm32/spawner.o
error: Build failed
BUILD FAILURE 6.4 wasm