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vm/dart/stream_timeline_to_test/1 flaky -> RuntimeError #64315

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Description

@alexmarkov

The tests

vm/dart/stream_timeline_to_test/1 RuntimeError (expected Pass)

are failing on configurations

vm-dyn-mac-debug-arm64
--- Command "vm" (took 09.000699s):
DART_CONFIGURATION=DebugARM64 xcodebuild/DebugARM64/dart --timeline-recorder=none -Dtest_runner.configuration=vm-dyn-mac-debug-arm64 --interpreter --ignore-unrecognized-flags --packages=.dart_tool/package_config.json runtime/tests/vm/dart/stream_timeline_to_test.dart

exit code:
255

stderr:
Unhandled exception:
Expect.isTrue(false) fails.
#0      Expect._fail (package:expect/expect.dart:992:5)
#1      Expect.isTrue (package:expect/expect.dart:191:5)
#2      testPerfettoRecorder (file:///Volumes/Work/s/wz07mj9uk/ir/runtime/tests/vm/dart/stream_timeline_to_test.dart:61:10)
#3      main.<anonymous closure> (file:///Volumes/Work/s/wz07mj9uk/ir/runtime/tests/vm/dart/stream_timeline_to_test.dart:108:11)
<asynchronous suspension>
#4      withTempDir (file:///Volumes/Work/s/wz07mj9uk/ir/runtime/tests/vm/dart/use_flag_test_helper.dart:291:12)
<asynchronous suspension>
#5      main (file:///Volumes/Work/s/wz07mj9uk/ir/runtime/tests/vm/dart/stream_timeline_to_test.dart:106:3)
<asynchronous suspension>

--- Re-run this test:
python3 tools/test.py -n vm-dyn-mac-debug-arm64 vm/dart/stream_timeline_to_test/1

log

/cc @sstrickl

Activity

  1. added
    area-vmUse area-vm for VM related issues, including code coverage, and the AOT and JIT backends.
    on Sep 17, 2026
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