Swift Package IndexBuild Information
Failed to build XGrammar, reference main (e0f2de), with Swift 6.2 for Wasm on 7 Apr 2026 17:57:01 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:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1Build Log
========================================
RunAll
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Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mattt/swift-xgrammar.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/mattt/swift-xgrammar
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
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 main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.2
Building package at path: $PWD
https://github.com/mattt/swift-xgrammar.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1
wasm-6.2-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:2a8b2d9e022a9894c61e0736af7cdaa1ee64c002dbb133a55c0d7e8980b3ad16
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest
warning: multiple Swift SDKs match target triple `wasm32-unknown-wasip1` and host triple x86_64-unknown-linux-gnu, selected one at /root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/embedded-swift-sdk.json
Building for debugging...
[0/21] Write swift-version-24593BA9C3E375BF.txt
[1/21] Write sources
[2/21] Compiling Cxgrammar bridging.cc
[3/21] Compiling earley_parser.cc
[4/21] Compiling config.cc
[5/21] Compiling grammar_parser.cc
[6/21] Compiling recursion_guard.cc
[7/21] Compiling logging.cc
[8/21] Compiling grammar.cc
[9/21] Compiling tokenizer_info.cc
[10/21] Compiling testing.cc
[11/21] Compiling regex_converter.cc
[12/21] Compiling fsm.cc
[13/21] Compiling compiled_grammar.cc
[14/21] Compiling grammar_printer.cc
[15/21] Compiling structural_tag.cc
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:71:46: error: no template named 'shared_future' in namespace 'std'; did you mean 'shared_ptr'?
71 | auto Submit(F&& f, Args&&... args) -> std::shared_future<std::invoke_result_t<F, Args...>> {
| ~~~~~^~~~~~~~~~~~~
| shared_ptr
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/__memory/shared_ptr.h:416:59: note: 'shared_ptr' declared here
416 | class _LIBCPP_SHARED_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS shared_ptr {
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:160:20: error: no member named 'thread' in namespace 'std'; did you mean 'fread'?
160 | std::vector<std::thread> workers_;
| ~~~~~^~~~~~
| fread
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/cstdio:141:9: note: 'fread' declared here
141 | using ::fread _LIBCPP_USING_IF_EXISTS;
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:160:15: error: template argument for template type parameter must be a type
160 | std::vector<std::thread> workers_;
| ^~~~~~~~~~~
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/vector:388:17: note: template parameter is declared here
388 | template <class _Tp, class _Allocator /* = allocator<_Tp> */>
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:164:8: error: no type named 'mutex' in namespace 'std'
164 | std::mutex queue_mutex_;
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:166:8: error: no type named 'condition_variable' in namespace 'std'
166 | std::condition_variable queue_condition_;
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:168:8: error: no type named 'condition_variable' in namespace 'std'
168 | std::condition_variable tasks_done_condition_;
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:36:40: error: no member named 'thread' in namespace 'std'
36 | ThreadPool(size_t num_threads = std::thread::hardware_concurrency()) {
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:44:18: error: no template named 'unique_lock' in namespace 'std'; did you mean 'unique_copy'?
44 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^~~~~~~~~~~
| unique_copy
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/__algorithm/unique_copy.h:102:1: note: 'unique_copy' declared here
102 | unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred) {
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:44:35: error: no member named 'mutex' in namespace 'std'
44 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:45:35: error: use of undeclared identifier 'lock'; did you mean 'clock'?
45 | queue_condition_.wait(lock, [this] { return shutdown_ || !task_queue_.empty(); });
| ^~~~
| clock
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/time.h:71:9: note: 'clock' declared here
71 | clock_t clock (void);
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:75:39: error: no member named 'packaged_task' in namespace 'std'
75 | auto task = std::make_shared<std::packaged_task<return_type()>>(
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:79:10: error: no template named 'shared_future' in namespace 'std'; did you mean 'shared_ptr'?
79 | std::shared_future<return_type> res = task->get_future().share();
| ~~~~~^~~~~~~~~~~~~
| shared_ptr
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/__memory/shared_ptr.h:416:59: note: 'shared_ptr' declared here
416 | class _LIBCPP_SHARED_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS shared_ptr {
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:82:12: error: no template named 'unique_lock' in namespace 'std'; did you mean 'unique_copy'?
82 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^~~~~~~~~~~
| unique_copy
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/__algorithm/unique_copy.h:102:1: note: 'unique_copy' declared here
102 | unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred) {
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:82:29: error: no member named 'mutex' in namespace 'std'
82 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:104:12: error: no template named 'unique_lock' in namespace 'std'; did you mean 'unique_copy'?
104 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^~~~~~~~~~~
| unique_copy
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/__algorithm/unique_copy.h:102:1: note: 'unique_copy' declared here
102 | unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred) {
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:104:29: error: no member named 'mutex' in namespace 'std'
104 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:115:10: error: no template named 'unique_lock' in namespace 'std'; did you mean 'unique_copy'?
115 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^~~~~~~~~~~
| unique_copy
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/__algorithm/unique_copy.h:102:1: note: 'unique_copy' declared here
102 | unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred) {
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_matcher.cc:27:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:115:27: error: no member named 'mutex' in namespace 'std'
115 | std::unique_lock<std::mutex> lock(queue_mutex_);
| ~~~~~^
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:116:32: error: use of undeclared identifier 'lock'; did you mean 'clock'?
116 | tasks_done_condition_.wait(lock, [this] { return unfinished_task_count_ == 0; });
| ^~~~
| clock
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/time.h:71:9: note: 'clock' declared here
71 | clock_t clock (void);
| ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
[16/21] Compiling grammar_matcher.cc
[16/21] Compiling fsm_builder.cc
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_compiler.cc:26:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:71:46: error: no template named 'shared_future' in namespace 'std'; did you mean 'shared_ptr'?
71 | auto Submit(F&& f, Args&&... args) -> std::shared_future<std::invoke_result_t<F, Args...>> {
| ~~~~~^~~~~~~~~~~~~
| shared_ptr
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/__memory/shared_ptr.h:416:59: note: 'shared_ptr' declared here
416 | class _LIBCPP_SHARED_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS shared_ptr {
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_compiler.cc:26:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:160:20: error: no member named 'thread' in namespace 'std'; did you mean 'fread'?
160 | std::vector<std::thread> workers_;
| ~~~~~^~~~~~
| fread
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/cstdio:141:9: note: 'fread' declared here
141 | using ::fread _LIBCPP_USING_IF_EXISTS;
| ^
In file included from /host/spi-builder-workspace/Sources/Cxgrammar/cpp/grammar_compiler.cc:26:
/host/spi-builder-workspace/Sources/Cxgrammar/cpp/support/thread_pool.h:160:15: error: template argument for template type parameter must be a type
160 | std::vector<std::thread> workers_;
| ^~~~~~~~~~~
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/c++/v1/vector:388:17: note: template parameter is declared here
388 | template <class _Tp, class _Allocator /* = allocator<_Tp> */>
| ^
[16/21] Compiling grammar_compiler.cc
[16/21] Compiling grammar_functor.cc
[16/21] Compiling json_schema_converter.cc
BUILD FAILURE 6.2 wasm