Swift Package IndexBuild Information
Failed to build XGrammar, reference 0.1.0 (e0f2de), with Swift 6.1 for Android on 7 Apr 2026 18:04:58 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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:android-6.1-latest swift build --swift-sdk aarch64-unknown-linux-android24 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mattt/swift-xgrammar.git
Reference: 0.1.0
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/mattt/swift-xgrammar
* tag 0.1.0 -> FETCH_HEAD
HEAD is now at e0f2de3 Add CI workflow (#1)
Cloned https://github.com/mattt/swift-xgrammar.git
Revision (git rev-parse @):
e0f2de361aa4891dbca5113629bc90ab8e5c3888
SUCCESS checkout https://github.com/mattt/swift-xgrammar.git at 0.1.0
========================================
Build
========================================
Selected platform: android
Swift version: 6.1
Building package at path: $PWD
https://github.com/mattt/swift-xgrammar.git
https://github.com/mattt/swift-xgrammar.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
"cxx_language_standard" : "c++17",
"dependencies" : [
],
"manifest_display_name" : "XGrammar",
"name" : "XGrammar",
"path" : "/host/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "13.0"
},
{
"name" : "ios",
"version" : "16.0"
},
{
"name" : "tvos",
"version" : "16.0"
},
{
"name" : "watchos",
"version" : "9.0"
},
{
"name" : "visionos",
"version" : "1.0"
}
],
"products" : [
{
"name" : "XGrammar",
"targets" : [
"XGrammar"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "XGrammarTests",
"module_type" : "SwiftTarget",
"name" : "XGrammarTests",
"path" : "Tests/XGrammarTests",
"sources" : [
"CompilerTests.swift",
"ConfigurationTests.swift",
"ErrorTests.swift",
"GrammarCompositionTests.swift",
"GrammarTests.swift",
"Helpers.swift",
"JSONSchemaTests.swift",
"MatcherTests.swift",
"RegexGrammarTests.swift",
"StructuralTagTests.swift",
"TokenBitmaskTests.swift",
"TokenizerInfoTests.swift"
],
"target_dependencies" : [
"XGrammar"
],
"type" : "test"
},
{
"c99name" : "XGrammar",
"module_type" : "SwiftTarget",
"name" : "XGrammar",
"path" : "Sources/XGrammar",
"product_memberships" : [
"XGrammar"
],
"sources" : [
"Bridging.swift",
"Compiler.swift",
"Configuration.swift",
"Errors.swift",
"Formatting.swift",
"Grammar.swift",
"Matcher.swift",
"TokenizerInfo.swift"
],
"target_dependencies" : [
"Cxgrammar"
],
"type" : "library"
},
{
"c99name" : "Cxgrammar",
"module_type" : "ClangTarget",
"name" : "Cxgrammar",
"path" : "Sources/Cxgrammar",
"product_memberships" : [
"XGrammar"
],
"sources" : [
"bridging.cc",
"cpp/compiled_grammar.cc",
"cpp/config.cc",
"cpp/earley_parser.cc",
"cpp/fsm.cc",
"cpp/fsm_builder.cc",
"cpp/grammar.cc",
"cpp/grammar_compiler.cc",
"cpp/grammar_functor.cc",
"cpp/grammar_matcher.cc",
"cpp/grammar_parser.cc",
"cpp/grammar_printer.cc",
"cpp/json_schema_converter.cc",
"cpp/regex_converter.cc",
"cpp/structural_tag.cc",
"cpp/support/logging.cc",
"cpp/support/recursion_guard.cc",
"cpp/testing.cc",
"cpp/tokenizer_info.cc"
],
"type" : "library"
}
],
"tools_version" : "6.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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:android-6.1-latest swift build --swift-sdk aarch64-unknown-linux-android24 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats 2>&1
android-6.1-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d37fe7b8fba27dae59fb1d9d7dfa86b38b41ffb3975924aad6f05cb4cc3de131
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:android-6.1-latest
Building for debugging...
[0/21] Write sources
[1/21] Compiling logging.cc
[2/21] Compiling recursion_guard.cc
[3/21] Compiling regex_converter.cc
[4/21] Compiling testing.cc
[5/21] Write swift-version-24593BA9C3E375BF.txt
[6/21] Compiling tokenizer_info.cc
[7/21] Compiling grammar_printer.cc
[8/21] Compiling json_schema_converter.cc
[9/21] Compiling structural_tag.cc
[10/21] Compiling grammar_parser.cc
[11/21] Compiling grammar_matcher.cc
[12/21] Compiling config.cc
[13/21] Compiling grammar_functor.cc
[14/21] Compiling grammar.cc
[15/21] Compiling fsm_builder.cc
[16/21] Compiling grammar_compiler.cc
[17/21] Compiling earley_parser.cc
[18/21] Compiling Cxgrammar bridging.cc
[19/21] Compiling fsm.cc
[20/21] Compiling compiled_grammar.cc
[22/29] Compiling XGrammar Matcher.swift
[23/30] Compiling XGrammar Formatting.swift
[24/30] Compiling XGrammar TokenizerInfo.swift
[25/30] Compiling XGrammar Configuration.swift
[26/30] Compiling XGrammar Errors.swift
[27/30] Emitting module XGrammar
[28/30] Compiling XGrammar Compiler.swift
[29/30] Compiling XGrammar Bridging.swift
/host/spi-builder-workspace/Sources/XGrammar/Bridging.swift:30:32: error: cannot find 'strdup' in scope
28 | cStrings.reserveCapacity(strings.count)
29 | for string in strings {
30 | guard let duplicated = strdup(string) else {
| `- error: cannot find 'strdup' in scope
31 | for ptr in cStrings {
32 | if let p = ptr { free(UnsafeMutablePointer(mutating: p)) }
/host/spi-builder-workspace/Sources/XGrammar/Bridging.swift:32:34: error: cannot find 'free' in scope
30 | guard let duplicated = strdup(string) else {
31 | for ptr in cStrings {
32 | if let p = ptr { free(UnsafeMutablePointer(mutating: p)) }
| `- error: cannot find 'free' in scope
33 | }
34 | throw XGrammarError.runtimeError("Failed to allocate C string.")
/host/spi-builder-workspace/Sources/XGrammar/Bridging.swift:40:30: error: cannot find 'free' in scope
38 | defer {
39 | for ptr in cStrings {
40 | if let p = ptr { free(UnsafeMutablePointer(mutating: p)) }
| `- error: cannot find 'free' in scope
41 | }
42 | }
[30/30] Compiling XGrammar Grammar.swift
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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:android-6.1-latest swift build --swift-sdk aarch64-unknown-linux-android24 2>&1
android-6.1-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d37fe7b8fba27dae59fb1d9d7dfa86b38b41ffb3975924aad6f05cb4cc3de131
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:android-6.1-latest
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/9] Compiling XGrammar Configuration.swift
[3/10] Emitting module XGrammar
[4/10] Compiling XGrammar Compiler.swift
[5/10] Compiling XGrammar Bridging.swift
/host/spi-builder-workspace/Sources/XGrammar/Bridging.swift:30:32: error: cannot find 'strdup' in scope
28 | cStrings.reserveCapacity(strings.count)
29 | for string in strings {
30 | guard let duplicated = strdup(string) else {
| `- error: cannot find 'strdup' in scope
31 | for ptr in cStrings {
32 | if let p = ptr { free(UnsafeMutablePointer(mutating: p)) }
/host/spi-builder-workspace/Sources/XGrammar/Bridging.swift:32:34: error: cannot find 'free' in scope
30 | guard let duplicated = strdup(string) else {
31 | for ptr in cStrings {
32 | if let p = ptr { free(UnsafeMutablePointer(mutating: p)) }
| `- error: cannot find 'free' in scope
33 | }
34 | throw XGrammarError.runtimeError("Failed to allocate C string.")
/host/spi-builder-workspace/Sources/XGrammar/Bridging.swift:40:30: error: cannot find 'free' in scope
38 | defer {
39 | for ptr in cStrings {
40 | if let p = ptr { free(UnsafeMutablePointer(mutating: p)) }
| `- error: cannot find 'free' in scope
41 | }
42 | }
[6/10] Compiling XGrammar Grammar.swift
[7/10] Compiling XGrammar Formatting.swift
[8/10] Compiling XGrammar Errors.swift
[9/10] Compiling XGrammar Matcher.swift
[10/10] Compiling XGrammar TokenizerInfo.swift
BUILD FAILURE 6.1 android