llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux` 
running on `sanitizer-buildbot7` while building `clang` at step 2 "annotate".

Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/51/builds/12975

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python 
../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py'
 (failure)
...
[4679/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriterDecl.cpp.o
[4680/5460] Building CXX object 
tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/RefactoringCallbacks.cpp.o
[4681/5460] Building CXX object 
tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexingContext.cpp.o
[4682/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderStmt.cpp.o
[4683/5460] Building CXX object 
tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/RenamingAction.cpp.o
[4684/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/AnalyzerOptions.cpp.o
[4685/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/BasicValueFactory.cpp.o
[4686/5460] Building CXX object 
tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexDecl.cpp.o
[4687/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTUnit.cpp.o
[4688/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
[4689/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/FrontendActions.cpp.o
[4690/5460] Building CXX object 
tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/Transformer.cpp.o
[4691/5460] Building CXX object 
tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/Stencil.cpp.o
[4692/5460] Building CXX object 
tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CodeGenModule.cpp.o
[4693/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/DynamicExtent.cpp.o
[4694/5460] Building CXX object 
tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/RewriteRule.cpp.o
[4695/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CheckerRegistryData.cpp.o
[4696/5460] Building CXX object 
tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/USRGeneration.cpp.o
[4697/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/ConstraintManager.cpp.o
[4698/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/EntryPointStats.cpp.o
[4699/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CheckerHelpers.cpp.o
[4700/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CheckerContext.cpp.o
[4701/5460] Building CXX object 
tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScanningWorker.cpp.o
[4702/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CallDescription.cpp.o
[4703/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/DynamicType.cpp.o
[4704/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderDecl.cpp.o
[4705/5460] Building CXX object 
tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScanningTool.cpp.o
[4706/5460] Building CXX object 
tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/ASTSelection.cpp.o
[4707/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInstance.cpp.o
[4708/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/RangedConstraintManager.cpp.o
[4709/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/Checker.cpp.o
[4710/5460] Building CXX object 
tools/clang/lib/InstallAPI/CMakeFiles/obj.clangInstallAPI.dir/Frontend.cpp.o
[4711/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CallEvent.cpp.o
[4712/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/ExprEngineObjC.cpp.o
[4713/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/SymbolManager.cpp.o
[4714/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/MemRegion.cpp.o
[4715/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/HTMLDiagnostics.cpp.o
[4716/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/BugSuppression.cpp.o
[4717/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTConsumers.cpp.o
[4718/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/PlistDiagnostics.cpp.o
[4719/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CoreEngine.cpp.o
[4720/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/AnalysisManager.cpp.o
[4721/5460] Building CXX object 
tools/clang/lib/ASTMatchers/Dynamic/CMakeFiles/obj.clangDynamicASTMatchers.dir/Registry.cpp.o
Step 8 (build compiler-rt symbolizer) failure: build compiler-rt symbolizer 
(failure)
...
[4679/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriterDecl.cpp.o
[4680/5460] Building CXX object 
tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/RefactoringCallbacks.cpp.o
[4681/5460] Building CXX object 
tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexingContext.cpp.o
[4682/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderStmt.cpp.o
[4683/5460] Building CXX object 
tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/RenamingAction.cpp.o
[4684/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/AnalyzerOptions.cpp.o
[4685/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/BasicValueFactory.cpp.o
[4686/5460] Building CXX object 
tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexDecl.cpp.o
[4687/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTUnit.cpp.o
[4688/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
[4689/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/FrontendActions.cpp.o
[4690/5460] Building CXX object 
tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/Transformer.cpp.o
[4691/5460] Building CXX object 
tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/Stencil.cpp.o
[4692/5460] Building CXX object 
tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CodeGenModule.cpp.o
[4693/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/DynamicExtent.cpp.o
[4694/5460] Building CXX object 
tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/RewriteRule.cpp.o
[4695/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CheckerRegistryData.cpp.o
[4696/5460] Building CXX object 
tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/USRGeneration.cpp.o
[4697/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/ConstraintManager.cpp.o
[4698/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/EntryPointStats.cpp.o
[4699/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CheckerHelpers.cpp.o
[4700/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CheckerContext.cpp.o
[4701/5460] Building CXX object 
tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScanningWorker.cpp.o
[4702/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CallDescription.cpp.o
[4703/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/DynamicType.cpp.o
[4704/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderDecl.cpp.o
[4705/5460] Building CXX object 
tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScanningTool.cpp.o
[4706/5460] Building CXX object 
tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/ASTSelection.cpp.o
[4707/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInstance.cpp.o
[4708/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/RangedConstraintManager.cpp.o
[4709/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/Checker.cpp.o
[4710/5460] Building CXX object 
tools/clang/lib/InstallAPI/CMakeFiles/obj.clangInstallAPI.dir/Frontend.cpp.o
[4711/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CallEvent.cpp.o
[4712/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/ExprEngineObjC.cpp.o
[4713/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/SymbolManager.cpp.o
[4714/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/MemRegion.cpp.o
[4715/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/HTMLDiagnostics.cpp.o
[4716/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/BugSuppression.cpp.o
[4717/5460] Building CXX object 
tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTConsumers.cpp.o
[4718/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/PlistDiagnostics.cpp.o
[4719/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/CoreEngine.cpp.o
[4720/5460] Building CXX object 
tools/clang/lib/StaticAnalyzer/Core/CMakeFiles/obj.clangStaticAnalyzerCore.dir/AnalysisManager.cpp.o
[4721/5460] Building CXX object 
tools/clang/lib/ASTMatchers/Dynamic/CMakeFiles/obj.clangDynamicASTMatchers.dir/Registry.cpp.o
Step 9 (test compiler-rt symbolizer) failure: test compiler-rt symbolizer 
(failure)
...
[93/293] Linking CXX static library lib/libclangFormat.a
[94/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/BitwiseShiftChecker.cpp.o
[95/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/NonNullParamChecker.cpp.o
[96/293] Building CXX object 
tools/clang/tools/driver/CMakeFiles/clang.dir/cc1as_main.cpp.o
[97/293] Building CXX object 
tools/clang/tools/driver/CMakeFiles/clang.dir/cc1gen_reproducer_main.cpp.o
[98/293] Building CXX object 
tools/clang/tools/driver/CMakeFiles/clang.dir/clang-driver.cpp.o
[99/293] Building CXX object 
tools/clang/tools/clang-offload-packager/CMakeFiles/clang-offload-packager.dir/ClangOffloadPackager.cpp.o
[100/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ExprInspectionChecker.cpp.o
[101/293] Linking CXX executable bin/clang-offload-packager
[102/293] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
[103/293] Linking CXX executable bin/llvm-cov
[104/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ObjCPropertyChecker.cpp.o
[105/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/NumberObjectConversionChecker.cpp.o
[106/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/GenericTaintChecker.cpp.o
[107/293] Linking CXX executable bin/lli
[108/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/PutenvStackArrayChecker.cpp.o
[109/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ObjCUnusedIVarsChecker.cpp.o
[110/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ReturnValueChecker.cpp.o
[111/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ReturnPointerRangeChecker.cpp.o
[112/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ReturnUndefChecker.cpp.o
[113/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StringChecker.cpp.o
[114/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ObjCContainersASTChecker.cpp.o
[115/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/UndefinedAssignmentChecker.cpp.o
[116/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/MallocChecker.cpp.o
[117/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/RetainCountChecker/RetainCountDiagnostics.cpp.o
[118/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StackAddrEscapeChecker.cpp.o
[119/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/TaintTesterChecker.cpp.o
[120/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/UndefBranchChecker.cpp.o
[121/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/PaddingChecker.cpp.o
[122/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StdVariantChecker.cpp.o
[123/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/UndefCapturedBlockVarChecker.cpp.o
[124/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/PointerArithChecker.cpp.o
[125/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/VLASizeChecker.cpp.o
[126/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/UninitializedObject/UninitializedPointee.cpp.o
[127/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/TraversalChecker.cpp.o
[128/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/UndefinedNewArraySizeChecker.cpp.o
[129/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/VforkChecker.cpp.o
[130/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ObjCSuperDeallocChecker.cpp.o
[131/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/RetainCountChecker/RetainCountChecker.cpp.o
[132/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/ObjCContainersChecker.cpp.o
[133/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/UndefinedArraySubscriptChecker.cpp.o
[134/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/WebKit/ASTUtils.cpp.o
[135/293] Building CXX object 
tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/WebKit/PtrTypesSemantics.cpp.o
Step 10 (build compiler-rt debug) failure: build compiler-rt debug (failure)
...
[4870/5460] Building AMDGPUGenAsmMatcher.inc...
[4871/5460] Building CXX object 
tools/clang/tools/clang-refactor/CMakeFiles/clang-refactor.dir/ClangRefactor.cpp.o
[4872/5460] Building AMDGPUGenGlobalISel.inc...
[4873/5460] Building AMDGPUGenDAGISel.inc...
[4874/5460] Building CXX object 
tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/IncrementalParser.cpp.o
[4875/5460] Building CXX object 
tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/CodeCompletion.cpp.o
[4876/5460] Building CXX object 
tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/InterpreterUtils.cpp.o
[4877/5460] Building CXX object 
tools/clang/tools/clang-installapi/CMakeFiles/clang-installapi.dir/ClangInstallAPI.cpp.o
[4878/5460] Building CXX object 
tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/InterpreterValuePrinter.cpp.o
[4879/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
[4880/5460] Building AMDGPUGenInstrInfo.inc...
[4881/5460] Building AMDGPUGenRegisterBank.inc...
[4882/5460] Building AMDGPUGenRegisterInfo.inc...
[4883/5460] Building CXX object 
tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/Interpreter.cpp.o
ninja: build stopped: subcommand failed.

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild



Step 11 (test compiler-rt debug) failure: test compiler-rt debug (failure)
...
[301/349] Linking CXX static library lib/libLLVMOptDriver.a
[302/349] Linking CXX static library lib/liblldCOFF.a
[303/349] Linking CXX static library lib/liblldWasm.a
[304/349] Linking CXX static library lib/liblldMachO.a
[305/349] Linking CXX static library lib/liblldELF.a
[306/349] Linking CXX static library lib/liblldMinGW.a
[307/349] Building CXX object 
tools/clang/tools/driver/CMakeFiles/clang.dir/cc1_main.cpp.o
[308/349] Building CXX object 
tools/clang/tools/driver/CMakeFiles/clang.dir/driver.cpp.o
[309/349] Linking CXX executable bin/clang-offload-packager
[310/349] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
[311/349] Linking CXX executable bin/sancov
[312/349] Linking CXX executable bin/llvm-nm
[313/349] Linking CXX executable bin/llvm-ar
[314/349] Linking CXX executable bin/llvm-objdump
[315/349] Linking CXX executable bin/llvm-jitlink
[316/349] Linking CXX executable bin/opt
[317/349] Linking CXX executable bin/llvm-lto
[318/349] Linking CXX shared module lib/LLVMgold.so
[319/349] Linking CXX executable bin/lld
ninja: build stopped: subcommand failed.

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild




Step 12 (build compiler-rt tsan_debug) failure: build compiler-rt tsan_debug 
(failure)
...
[4851/5441] Linking CXX static library lib/libLLVMRISCVDisassembler.a
[4852/5441] Linking CXX static library lib/libLLVMRISCVAsmParser.a
[4853/5441] Building CXX object 
lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVInstructionSelector.cpp.o
[4854/5441] Linking CXX static library lib/libLLVMRISCVCodeGen.a
[4855/5441] Linking CXX static library lib/libLLVMExegesisRISCV.a
[4856/5441] Linking CXX executable bin/llvm-exegesis
[4857/5441] Building AMDGPUGenAsmWriter.inc...
[4858/5441] Building AMDGPUGenGlobalISel.inc...
[4859/5441] Building AMDGPUGenAsmMatcher.inc...
[4860/5441] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
[4861/5441] Building AMDGPUGenDAGISel.inc...
[4862/5441] Building AMDGPUGenInstrInfo.inc...
[4863/5441] Building AMDGPUGenRegisterBank.inc...
[4864/5441] Building AMDGPUGenRegisterInfo.inc...
ninja: build stopped: subcommand failed.

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild




Step 13 (build compiler-rt default) failure: build compiler-rt default (failure)
...
[4869/5460] Linking CXX static library lib/libLLVMRISCVTargetMCA.a
[4870/5460] Linking CXX static library lib/libLLVMRISCVDisassembler.a
[4871/5460] Linking CXX static library lib/libLLVMRISCVAsmParser.a
[4872/5460] Building CXX object 
lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVInstructionSelector.cpp.o
[4873/5460] Linking CXX static library lib/libLLVMRISCVCodeGen.a
[4874/5460] Linking CXX static library lib/libLLVMExegesisRISCV.a
[4875/5460] Linking CXX executable bin/llvm-exegesis
[4876/5460] Building AMDGPUGenAsmWriter.inc...
[4877/5460] Building AMDGPUGenGlobalISel.inc...
[4878/5460] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
[4879/5460] Building AMDGPUGenAsmMatcher.inc...
[4880/5460] Building AMDGPUGenDAGISel.inc...
[4881/5460] Building AMDGPUGenInstrInfo.inc...
[4882/5460] Building AMDGPUGenRegisterBank.inc...
[4883/5460] Building AMDGPUGenRegisterInfo.inc...
ninja: build stopped: subcommand failed.

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild




Step 14 (test compiler-rt default) failure: test compiler-rt default (failure)
...
[311/349] Generating ../../bin/llvm-ranlib
[312/349] Building CXX object 
tools/clang/tools/driver/CMakeFiles/clang.dir/driver.cpp.o
[313/349] Linking CXX executable bin/llvm-nm
[314/349] Building CXX object 
tools/clang/tools/driver/CMakeFiles/clang.dir/cc1_main.cpp.o
[315/349] Linking CXX executable bin/llvm-jitlink
[316/349] Linking CXX executable bin/opt
[317/349] Linking CXX executable bin/lld
[318/349] Linking CXX executable bin/llvm-lto
[319/349] Linking CXX shared module lib/LLVMgold.so
[320/349] Building CXX object 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
FAILED: 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache 
/home/b/sanitizer-aarch64-linux/build/llvm_build0/bin/clang++ -DCLANG_EXPORTS 
-DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/lib/Serialization
 -I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/tools/clang/include 
-I/home/b/sanitizer-aarch64-linux/build/build_default/include 
-I/home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/include -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough 
-Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor 
-Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion 
-Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color 
-ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual 
-Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables 
-fno-rtti -UNDEBUG -MD -MT 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -MF 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o.d
 -o 
tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReader.cpp.o
 -c 
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp
/home/b/sanitizer-aarch64-linux/build/llvm-project/clang/lib/Serialization/ASTReader.cpp:11764:17:
 error: unused variable 'I' [-Werror,-Wunused-variable]
 11764 |   for (unsigned I : llvm::seq<unsigned>(NumFlags))
       |                 ^
1 error generated.
ninja: build stopped: subcommand failed.

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild




Step 15 (build standalone compiler-rt) failure: build standalone compiler-rt 
(failure)
...
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
-- The ASM compiler identification is unknown
-- Didn't find assembler
CMake Error at CMakeLists.txt:22 (project):
  The CMAKE_C_COMPILER:

    /home/b/sanitizer-aarch64-linux/build/build_default/bin/clang

  is not a full path to an existing compiler tool.

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:22 (project):
  The CMAKE_CXX_COMPILER:

    /home/b/sanitizer-aarch64-linux/build/build_default/bin/clang++

  is not a full path to an existing compiler tool.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:22 (project):
  No CMAKE_ASM_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "ASM" or the CMake cache entry CMAKE_ASM_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.
-- Warning: Did not find file Compiler/-ASM
-- Configuring incomplete, errors occurred!

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild




ninja: Entering directory `compiler_rt_build'
ninja: error: loading 'build.ninja': No such file or directory

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild




Step 16 (test standalone compiler-rt) failure: test standalone compiler-rt 
(failure)
@@@BUILD_STEP test standalone compiler-rt@@@
ninja: Entering directory `compiler_rt_build'
ninja: error: loading 'build.ninja': No such file or directory

How to reproduce locally: 
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild





```

</details>

https://github.com/llvm/llvm-project/pull/129938
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