--- stderr --- <--- Last few GCs ---> [145643:0x55c18588f800] 324 ms: Mark-Compact 16.8 (29.4) -> 11.8 (46.6) MB, 5.73 / 0.00 ms (+ 6.4 ms in 0 steps since start of marking, biggest step 0.0 ms, walltime since start of marking 18 ms) (average mu = 0.946, current mu = 0.947) finalize inc[145643:0x55c18588f800] 435 ms: Mark-Compact 32.3 (49.6) -> 19.2 (52.9) MB, 21.73 / 0.00 ms (+ 0.1 ms in 0 steps since start of marking, biggest step 0.0 ms, walltime since start of marking 37 ms) (average mu = 0.874, current mu = 0.804) allocation <--- JS stacktrace ---> FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory 1: 0x55c180a17db4 node::Abort() [out/Release/node] 2: 0x55c1808cc54e [out/Release/node] 3: 0x55c180c78624 v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, v8::OOMDetails const&) [out/Release/node] 4: 0x55c180c78a14 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, v8::OOMDetails const&) [out/Release/node] 5: 0x55c180ebb39b [out/Release/node] 6: 0x55c180ed2fee v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [out/Release/node] 7: 0x55c180ea8265 v8::internal::HeapAllocator::AllocateRawWithLightRetrySlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [out/Release/node] 8: 0x55c180ea8d49 v8::internal::HeapAllocator::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [out/Release/node] 9: 0x55c180e83cca v8::internal::Factory::NewFillerObject(int, v8::internal::AllocationAlignment, v8::internal::AllocationType, v8::internal::AllocationOrigin) [out/Release/node] 10: 0x55c1812fbe3f v8::internal::Runtime_AllocateInYoungGeneration(int, unsigned long*, v8::internal::Isolate*) [out/Release/node] 11: 0x55c1817ec036 [out/Release/node] Command: out/Release/node --experimental-shadow-realm --max-old-space-size=20 --test-reporter=spec --test-reporter-destination=stdout --test-reporter=./tools/github_reporter/index.js --test-reporter-destination=stdout /home/runner/work/node-v8/node-v8/test/parallel/test-shadow-realm-gc.js --- CRASHED (Signal: 6) ---