Swift Package Index

Build Information

Failed to build llbuild2, reference main (bc6abf), with Swift 6.3 for Wasm on 15 Apr 2026 02:42:46 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/apple/swift-llbuild2.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/apple/swift-llbuild2
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at bc6abf3 Merge pull request #254 from apple/fix-metrics
Cloned https://github.com/apple/swift-llbuild2.git
Revision (git rev-parse @):
bc6abf3eb3498308745e5f1b43af789f81932c6c
SUCCESS checkout https://github.com/apple/swift-llbuild2.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/apple/swift-llbuild2.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Fetching https://github.com/apple/swift-protobuf.git
Fetching https://github.com/apple/swift-tools-support-core.git
Fetching https://github.com/apple/swift-nio.git
Fetching https://github.com/apple/swift-tools-support-async.git
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-log.git
[1/910] Fetching swift-tools-support-async
[911/6511] Fetching swift-tools-support-async, swift-system
[912/13080] Fetching swift-tools-support-async, swift-system, swift-log
[5467/20267] Fetching swift-tools-support-async, swift-system, swift-log, swift-tools-support-core
[13286/66815] Fetching swift-tools-support-async, swift-system, swift-log, swift-tools-support-core, swift-protobuf
[23061/149966] Fetching swift-tools-support-async, swift-system, swift-log, swift-tools-support-core, swift-protobuf, swift-nio
Fetched https://github.com/apple/swift-system.git from cache (0.88s)
Fetching https://github.com/apple/swift-async-algorithms.git
Fetched https://github.com/apple/swift-tools-support-core.git from cache (0.94s)
[14530/137178] Fetching swift-tools-support-async, swift-log, swift-protobuf, swift-nio
Fetching https://github.com/apple/swift-collections.git
[23045/143413] Fetching swift-tools-support-async, swift-log, swift-protobuf, swift-nio, swift-async-algorithms
[29322/166950] Fetching swift-tools-support-async, swift-log, swift-protobuf, swift-nio, swift-async-algorithms, swift-collections
Fetched https://github.com/apple/swift-async-algorithms.git from cache (0.70s)
[41181/160715] Fetching swift-tools-support-async, swift-log, swift-protobuf, swift-nio, swift-collections
Fetching https://github.com/apple/swift-atomics.git
[65705/162535] Fetching swift-tools-support-async, swift-log, swift-protobuf, swift-nio, swift-collections, swift-atomics
Fetched https://github.com/apple/swift-atomics.git from cache (0.75s)
[76950/160715] Fetching swift-tools-support-async, swift-log, swift-protobuf, swift-nio, swift-collections
Fetched https://github.com/apple/swift-collections.git from cache (2.48s)
[85498/137178] Fetching swift-tools-support-async, swift-log, swift-protobuf, swift-nio
Fetched https://github.com/apple/swift-tools-support-async.git from cache (16.39s)
Fetched https://github.com/apple/swift-log.git from cache (16.40s)
Fetched https://github.com/apple/swift-protobuf.git from cache (16.54s)
Fetched https://github.com/apple/swift-nio.git from cache (16.56s)
Computing version for https://github.com/apple/swift-tools-support-async.git
Computed https://github.com/apple/swift-tools-support-async.git at 0.18.0 (22.63s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.0 (4.68s)
Computing version for https://github.com/apple/swift-async-algorithms.git
Computed https://github.com/apple/swift-async-algorithms.git at 1.1.3 (4.47s)
Computing version for https://github.com/apple/swift-tools-support-core.git
Computed https://github.com/apple/swift-tools-support-core.git at 0.7.3 (0.56s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.4.1 (0.67s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.48s)
Computing version for https://github.com/apple/swift-protobuf.git
Computed https://github.com/apple/swift-protobuf.git at 1.36.1 (0.54s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.12.0 (0.44s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.97.1 (0.72s)
Creating working copy for https://github.com/apple/swift-tools-support-async.git
Working copy of https://github.com/apple/swift-tools-support-async.git resolved at 0.18.0
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.12.0
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 1.1.3
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.0
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.4.1
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-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.97.1
Creating working copy for https://github.com/apple/swift-tools-support-core.git
Working copy of https://github.com/apple/swift-tools-support-core.git resolved at 0.7.3
Creating working copy for https://github.com/apple/swift-protobuf.git
Working copy of https://github.com/apple/swift-protobuf.git resolved at 1.36.1
[1/1] Compiling plugin SwiftProtobufPlugin
Building for debugging...
[1/50] Write sources
[7/50] Compiling FXCBLAKE3 blake3_simd_avx2.c
[7/50] Compiling _AtomicsShims.c
[9/50] Write sources
[11/50] Compiling TSCclibc strerror.c
[12/50] Compiling FXCBLAKE3 blake3_simd_sse41.c
[13/50] Compiling TSCclibc libc.c
[14/50] Compiling TSCclibc process.c
In file included from /host/spi-builder-workspace/Sources/FXCProcessSpawnSync/spawner.c:18:
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/signal.h:2:2: error: "wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
    2 | #error "wasm lacks signal support; to enable minimal signal emulation, \
      |  ^
/host/spi-builder-workspace/Sources/FXCProcessSpawnSync/spawner.c:26:10: fatal error: 'sys/wait.h' file not found
   26 | #include <sys/wait.h>
      |          ^~~~~~~~~~~~
2 errors generated.
[15/50] Compiling FXCProcessSpawnSync spawner.c
[15/50] Write sources
[15/50] Write swift-version-24593BA9C3E375BF.txt
[15/50] Write sources
BUILD FAILURE 6.3 wasm