pkg/vm/test/kernel_front_end_test flaky -> Timeout on pkg-linux-debug

[alexmarkov]

The test pkg/vm/test/kernel_front_end_test turned from flaky to Timeout on pkg-linux-debug bot.

Log:

--- Command "vm" (took 04:00.000520s):
DART_CONFIGURATION=DebugX64 CHROME_PATH=/b/s/w/ir/cache/builder/sdk/third_party/browsers/chrome/chrome/google-chrome out/DebugX64/dart-sdk/bin/dart --enable_asserts -Dtest_runner.configuration=unittest-asserts-debug-linux --ignore-unrecognized-flags --packages=/b/s/w/ir/cache/builder/sdk/.dart_tool/package_config.json /b/s/w/ir/cache/builder/sdk/pkg/vm/test/kernel_front_end_test.dart

exit code:
1

diagnostics:
Process list including children: [14201]
Trying to capture stack trace for pid 14201
PID 14201 - process
TID 14201:
#0  0x00007fc0ae71fad3 pthread_cond_wait@@GLIBC_2.3.2
#1  0x0000558b09c012c8 dart::Monitor::WaitMicros(long)
#2  0x0000558b0a1262da Dart_RunLoop
#3  0x0000558b097d6a9e dart::bin::RunMainIsolate(char const*, char const*, dart::bin::CommandLineOptions*)
#4  0x0000558b097d794a dart::bin::main(int, char**)
#5  0x0000558b097d8949 main
#6  0x00007fc0adfa4c87 __libc_start_main
#7  0x0000558b097cf7e9 _start
TID 14202:
#0  0x00007fc0ae0a4947 epoll_wait
#1  0x0000558b097e8745 dart::bin::EventHandlerImplementation::Poll(unsigned long)
#2  0x0000558b09986702
#3  0x00007fc0ae7196db start_thread
#4  0x00007fc0ae0a461f __clone
TID 14203:
#0  0x0000558b09b15757 dart::Object::CheckHandle() const
#1  0x0000558b0a0d13d8 dart::kernel::TranslationHelper::LookupMethodByMember(dart::kernel::NameIndex, dart::String const&)
#2  0x0000558b0a0a2fb1 dart::kernel::StreamingFlowGraphBuilder::BuildMethodInvocation(dart::TokenPosition*, bool)
#3  0x0000558b0a09daf0 dart::kernel::StreamingFlowGraphBuilder::BuildStatement(dart::TokenPosition*)
#4  0x0000558b0a0a7cfa dart::kernel::StreamingFlowGraphBuilder::BuildBlock(dart::TokenPosition*)
#5  0x0000558b0a0aa405 dart::kernel::StreamingFlowGraphBuilder::BuildIfStatement(dart::TokenPosition*)
#6  0x0000558b0a0a7cfa dart::kernel::StreamingFlowGraphBuilder::BuildBlock(dart::TokenPosition*)
#7  0x0000558b0a09ec07 dart::kernel::StreamingFlowGraphBuilder::BuildFunctionBody(dart::Function const&, dart::LocalVariable*, bool)
#8  0x0000558b0a09f502 dart::kernel::StreamingFlowGraphBuilder::BuildGraphOfFunction(bool)
#9  0x0000558b0a09f960 dart::kernel::StreamingFlowGraphBuilder::BuildGraph()
#10 0x0000558b0a0b79a6 dart::kernel::FlowGraphBuilder::BuildGraph()
#11 0x0000558b0a01f501
#12 0x0000558b0a014728
#13 0x0000558b0a024885
#14 0x0000558b0a019ac4
#15 0x0000558b0a019673 dart::FlowGraphInliner::Inline()
#16 0x0000558b0a07ec54
#17 0x0000558b0a07e360 dart::CompilerPass::Run(dart::CompilerPassState*) const
#18 0x0000558b0a07e86e dart::CompilerPass::RunPipeline(dart::CompilerPass::PipelineMode, dart::CompilerPassState*)
#19 0x0000558b09ce37d3 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*)
#20 0x0000558b09ce4736
#21 0x0000558b09ce5351 dart::Compiler::CompileOptimizedFunction(dart::Thread*, dart::Function const&, long)
#22 0x0000558b09ce60de dart::BackgroundCompiler::Run()
#23 0x0000558b09cc867b dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)
#24 0x0000558b09cc9017 dart::ThreadPool::Worker::Main(unsigned long)
#25 0x0000558b09c00494
#26 0x00007fc0ae7196db start_thread
#27 0x00007fc0ae0a461f __clone
TID 14204:
#0  0x00007fc0ae71ffb9 pthread_cond_timedwait@@GLIBC_2.3.2
#1  0x0000558b09c012a8 dart::Monitor::WaitMicros(long)
#2  0x0000558b09cc883f dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)
#3  0x0000558b09cc9017 dart::ThreadPool::Worker::Main(unsigned long)
#4  0x0000558b09c00494
#5  0x00007fc0ae7196db start_thread
#6  0x00007fc0ae0a461f __clone
TID 14205:
#0  0x00007fc0ae71ffb9 pthread_cond_timedwait@@GLIBC_2.3.2
#1  0x0000558b09c012a8 dart::Monitor::WaitMicros(long)
#2  0x0000558b09cc883f dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)
#3  0x0000558b09cc9017 dart::ThreadPool::Worker::Main(unsigned long)
#4  0x0000558b09c00494
#5  0x00007fc0ae7196db start_thread
#6  0x00007fc0ae0a461f __clone
TID 14206:
#0  0x00007fc0ae71ffb9 pthread_cond_timedwait@@GLIBC_2.3.2
#1  0x0000558b09c012a8 dart::Monitor::WaitMicros(long)
#2  0x0000558b09cc883f dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)
#3  0x0000558b09cc9017 dart::ThreadPool::Worker::Main(unsigned long)
#4  0x0000558b09c00494
#5  0x00007fc0ae7196db start_thread
#6  0x00007fc0ae0a461f __clone
TID 14336:
#0  0x00007fc0ae71ffb9 pthread_cond_timedwait@@GLIBC_2.3.2
#1  0x0000558b09c012a8 dart::Monitor::WaitMicros(long)
#2  0x0000558b09a892f1 dart::MutatorThreadPool::OnEnterIdleLocked(dart::MonitorLocker*)
#3  0x0000558b09cc8796 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)
#4  0x0000558b09cc9017 dart::ThreadPool::Worker::Main(unsigned long)
#5  0x0000558b09c00494
#6  0x00007fc0ae7196db start_thread
#7  0x00007fc0ae0a461f __clone
TID 14457:
#0  0x00007fc0ae71ffb9 pthread_cond_timedwait@@GLIBC_2.3.2
#1  0x0000558b09c012a8 dart::Monitor::WaitMicros(long)
#2  0x0000558b09cc883f dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)
#3  0x0000558b09cc9017 dart::ThreadPool::Worker::Main(unsigned long)
#4  0x0000558b09c00494
#5  0x00007fc0ae7196db start_thread
#6  0x00007fc0ae0a461f __clone
TID 15557:
#0  0x00007fc0ae0a4611 __clone
#1  0x00007fc0ada7f700

eu-stack: dwfl_thread_getframes tid 15557 at 0x7fc0ada7f6ff in <unknown>: No DWARF information found


stdout:
00:00 �[32m+0�[0m: compile-simple�[0m

01:15 �[32m+1�[0m: compile-multi-root�[0m

01:56 �[32m+2�[0m: compile-multi-root-with-package-uri-main�[0m

02:28 �[32m+3�[0m: compile-package-split�[0m

03:03 �[32m+4�[0m: compile-package-config�[0m

03:32 �[32m+5�[0m: compile-multi-root-package-config�[0m

--- Re-run this test:
python3 tools/test.py -n unittest-asserts-debug-linux pkg/vm/test/kernel_front_end_test

https://dart-ci.appspot.com/log/pkg-linux-debug/unittest-asserts-debug-linux/14861/pkg/vm/test/kernel_front_end_test