SwiftRegex – Build Information – Swift Package Index

Build Information

Failed to build SwiftRegex, reference 6.3.0 (84c3fa), with Swift 6.4 for Wasm on 24 Sep 2026 04:13:56 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344845-2":/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.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/johnno1962/SwiftRegex5.git
Reference: 6.3.0
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/johnno1962/SwiftRegex5
 * tag               6.3.0      -> FETCH_HEAD
HEAD is now at 84c3fa9 Allow optional chaining.
Cloned https://github.com/johnno1962/SwiftRegex5.git
Revision (git rev-parse @):
84c3fa9a180b2c02e65e9a61287445b0482a5efe
SUCCESS checkout https://github.com/johnno1962/SwiftRegex5.git at 6.3.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/johnno1962/SwiftRegex5.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344845-2":/host -w "$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.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Building for debugging...
[Pre-planning 1 / 124]
[Planning deferred tasks]
[25 / 41]
[29 / 45] SwiftRegex
[34 / 45] SwiftRegexD
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/SwiftRegex5.playground/Sources/TupleRegex.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile TupleRegex.swift
/host/spi-builder-workspace/SwiftRegex5.playground/Sources/TupleRegex.swift:449:100: [1;31merror: [1;39mescaping closure captures 'inout' parameter 'target'[0;0m
[0;36m436 |[0;0m         return String(target)
[0;36m437 |[0;0m     }
[0;36m438 |[0;0m     open func replacing<SP: StringProtocol>(target: inout SP, pos posin: Int? = nil,
    [0;36m|[0;0m                                             `- [1;39mnote: [1;39mparameter 'target' is declared 'inout'[0;0m
[0;36m439 |[0;0m         group forceGroup: Int? = nil, count: UnsafeMutablePointer<Int>? = nil,
[0;36m440 |[0;0m         templates: [T], global: Bool = false) {
    [0;36m:[0;0m
[0;36m447 |[0;0m
[0;36m448 |[0;0m         let nsTarget = NSString(string: String(target))
[0;36m449 |[0;0m         regex.enumerateMatches(in: String(target), options: [], range: target.nsRange(pos: posin)) {
    [0;36m|[0;0m                                                                                                    `- [1;31merror: [1;39mescaping closure captures 'inout' parameter 'target'[0;0m
[0;36m450 |[0;0m             (match: NSTextCheckingResult?, flags: NSRegularExpression.MatchingFlags, stop: UnsafeMutablePointer<ObjCBool>) in
[0;36m451 |[0;0m             guard let match = match else { return }
    [0;36m:[0;0m
[0;36m466 |[0;0m                         .substring(with: NSMakeRange(pos, range.location - pos)))
[0;36m467 |[0;0m                     out.append(self.regex.replacementString(for: match, in:
[0;36m468 |[0;0m                         String(target), offset: 0, template: replacement))
    [0;36m|[0;0m                                `- [1;39mnote: [1;39mcaptured here[0;0m
[0;36m469 |[0;0m                     pos = NSMaxRange(range)
[0;36m470 |[0;0m                 }
Failed frontend command:
/usr/bin/swift-frontend -frontend -c -primary-file /host/spi-builder-workspace/SwiftRegex5.playground/Sources/TupleRegex.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/Objects-normal/wasm32/TupleRegex.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/Objects-normal/wasm32/TupleRegex.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/Objects-normal/wasm32/TupleRegex.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/Objects-normal/wasm32/TupleRegex.dia -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -module-cache-path /host/spi-builder-workspace/.build/out/ModuleCache.noindex -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -validate-clang-modules-once -clang-build-session-file /host/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /host -resource-dir /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SwiftRegex -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/Objects-normal/wasm32/SwiftRegex_const_extract_protocols.json -in-process-plugin-server-path /usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/Objects-normal/wasm32/TupleRegex.o -index-unit-output-path /SwiftRegex.build/Debug-webassembly-wasm32/SwiftRegex-t.build/Objects-normal/wasm32/TupleRegex.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm