Swift Package IndexBuild Information
Failed to build SwiftBuild, reference main (b2b232), with Swift 6.3 for Wasm on 2 May 2026 00:22:37 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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>&1Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swiftlang/swift-build.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-build
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at b2b2327 Promise: Resume the continuations outside the lock to avoid potential deadlock if invoked in a cancellation handler
Cloned https://github.com/swiftlang/swift-build.git
Revision (git rev-parse @):
b2b2327d9b5c9023780e2bd4b2512225066ef202
SUCCESS checkout https://github.com/swiftlang/swift-build.git at main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/swiftlang/swift-build.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$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/swiftlang/swift-driver.git
[1/37940] Fetching swift-driver
Fetched https://github.com/swiftlang/swift-driver.git from cache (3.17s)
Fetching https://github.com/swiftlang/swift-tools-protocols.git
[1/33101] Fetching swift-tools-protocols
Fetched https://github.com/swiftlang/swift-tools-protocols.git from cache (1.34s)
Fetching https://github.com/swiftlang/swift-llbuild.git
[1/29511] Fetching swift-llbuild
Fetched https://github.com/swiftlang/swift-llbuild.git from cache (5.63s)
Fetching https://github.com/swiftlang/swift-tools-support-core.git
[1/7226] Fetching swift-tools-support-core
Fetched https://github.com/swiftlang/swift-tools-support-core.git from cache (0.92s)
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-argument-parser.git
Fetching https://github.com/swiftlang/swift-toolchain-sqlite
[1/285] Fetching swift-toolchain-sqlite
[10/17842] Fetching swift-toolchain-sqlite, swift-argument-parser
[713/23443] Fetching swift-toolchain-sqlite, swift-argument-parser, swift-system
Fetched https://github.com/apple/swift-system.git from cache (0.60s)
[15560/17842] Fetching swift-toolchain-sqlite, swift-argument-parser
Fetched https://github.com/apple/swift-argument-parser.git from cache (0.93s)
Fetched https://github.com/swiftlang/swift-toolchain-sqlite from cache (1.10s)
Computing version for https://github.com/apple/swift-argument-parser.git
Computed https://github.com/apple/swift-argument-parser.git at 1.7.1 (3.59s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.54s)
Computing version for https://github.com/swiftlang/swift-toolchain-sqlite
Computed https://github.com/swiftlang/swift-toolchain-sqlite at 1.0.9 (0.49s)
Creating working copy for https://github.com/swiftlang/swift-llbuild.git
Working copy of https://github.com/swiftlang/swift-llbuild.git resolved at main (fd2284d)
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 1.7.1
Creating working copy for https://github.com/swiftlang/swift-tools-support-core.git
Working copy of https://github.com/swiftlang/swift-tools-support-core.git resolved at main (c8832dc)
Creating working copy for https://github.com/swiftlang/swift-toolchain-sqlite
Working copy of https://github.com/swiftlang/swift-toolchain-sqlite resolved at 1.0.9
Creating working copy for https://github.com/swiftlang/swift-tools-protocols.git
Working copy of https://github.com/swiftlang/swift-tools-protocols.git resolved at main (4967801)
Creating working copy for https://github.com/swiftlang/swift-driver.git
Working copy of https://github.com/swiftlang/swift-driver.git resolved at main (302fc81)
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
[1/1] Compiling plugin cmake-smoke-test
[2/2] Compiling plugin generate-windows-installer-component-groups
[3/3] Compiling plugin launch-xcode
[4/4] Compiling plugin run-xcodebuild
[5/5] Compiling plugin GenerateManual
[6/6] Compiling plugin GenerateDoccReference
Building for debugging...
[6/345] Write sources
[11/345] Compiling llvmSupport Valgrind.cpp
[12/345] Compiling SWBCSupport CLibRemarksHelper.c
[13/345] Compiling llvmSupport UnicodeCaseFold.cpp
[14/345] Write swift-version-24593BA9C3E375BF.txt
[15/345] Compiling llvmSupport circular_raw_ostream.cpp
[16/345] Compiling llvmSupport Twine.cpp
/host/spi-builder-workspace/.build/checkouts/swift-llbuild/lib/llvm/Support/Threading.cpp:72:17: error: no member named 'thread' in namespace 'std'
72 | return std::thread::hardware_concurrency();
| ~~~~~^
/host/spi-builder-workspace/.build/checkouts/swift-llbuild/lib/llvm/Support/Threading.cpp:83:27: error: no member named 'thread' in namespace 'std'
83 | if (unsigned Val = std::thread::hardware_concurrency())
| ~~~~~^
2 errors generated.
[17/345] Compiling llvmSupport Threading.cpp
[17/345] Compiling llvmSupport Triple.cpp
[17/345] Compiling SWBCSupport CLibclang.cpp
[17/345] Compiling llvmSupport raw_ostream.cpp
[17/345] Compiling llvmSupport TargetParser.cpp
[17/345] Compiling llvmSupport StringSaver.cpp
[17/345] Compiling llvmSupport Unicode.cpp
[17/345] Compiling llvmSupport YAMLParser.cpp
BUILD FAILURE 6.3 wasm