Build Information
Failed to build swift-tools-support-core, reference 0.7.3 (e8fbc8), with Swift 6.3 for Wasm on 16 Apr 2026 04:08:03 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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-tools-support-core.git
Reference: 0.7.3
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-tools-support-core
* tag 0.7.3 -> FETCH_HEAD
HEAD is now at e8fbc8b Fix an issue where process handles are leaked in exec on Windows
Cloned https://github.com/swiftlang/swift-tools-support-core.git
Revision (git rev-parse @):
e8fbc8b05a155f311b862178d92d043afb216fe3
SUCCESS checkout https://github.com/swiftlang/swift-tools-support-core.git at 0.7.3
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/swiftlang/swift-tools-support-core.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$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
Building for debugging...
[0/13] Write sources
[4/13] Compiling TSCclibc libc.c
[5/13] Compiling TSCclibc strerror.c
[6/13] Compiling TSCclibc process.c
[7/13] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[9/15] Emitting module TSCLibc
/host/spi-builder-workspace/Sources/TSCLibc/libc.swift:21:19: error: no such module 'Darwin.C'
19 | @_exported import Android
20 | #else
21 | @_exported import Darwin.C
| `- error: no such module 'Darwin.C'
22 | #endif
23 |
[10/15] Compiling TSCLibc libc.swift
/host/spi-builder-workspace/Sources/TSCLibc/libc.swift:21:19: error: no such module 'Darwin.C'
19 | @_exported import Android
20 | #else
21 | @_exported import Darwin.C
| `- error: no such module 'Darwin.C'
22 | #endif
23 |
BUILD FAILURE 6.3 wasm