Flaky kernel compile failure on WinUWP bot #94492
Description
I'm seeing CI failures in the WinUWP presubmit shard that appear to be related to building kernel_blob for test fixtures.
Example failures include:
- Dark SDK roll Roll Dart SDK from 3a963ff14181 to 8bb2e56ec900 (4 revisions) engine#30033: failure log
- Skia roll Roll Skia from fa183572bfd3 to adcf51cb52ea (8 revisions) engine#30034: failure log
- Third-party patch Dark SDK roll Eliminate hardcoded scale factor in a11y scroll engine#30013: failure log
- Fuchsia patch [fuchsia] Change Touch priority to YES engine#30041: failure log
The error seems to be related to kernel builds, specifically during kernel compiles during the step where GN invokes dart running frontend_server.dart.snapshot. Example:
FAILED: gen/flutter/runtime/assets/no_plugin_registrant_kernel_blob.bin
C:/b/s/w/ir/cipd_bin_packages/cpython3/bin/python3.exe ../../build/gn_run_binary.py ../../flutter/prebuilts/windows-x64/dart-sdk/bin/dart.exe C:/b/s/w/ir/cache/builder/src/flutter/prebuilts/windows-x64/dart-sdk/bin/snapshots/frontend_server.dart.snapshot --sdk-root C:/b/s/w/ir/cache/builder/src/out/winuwp_debug/flutter_patched_sdk --target flutter --sound-null-safety --output-dill gen/flutter/runtime/assets/no_plugin_registrant_kernel_blob.bin --depfile C:/b/s/w/ir/cache/builder/src/out/winuwp_debug/gen/flutter/runtime/snapshot__dsk__ds_no_plugin_registrant.depfile.d C:/b/s/w/ir/cache/builder/src/flutter/runtime/fixtures/no_dart_plugin_registrant_test.dart
Traceback (most recent call last):
File "../../build/gn_run_binary.py", line 23, in <module>
subprocess.check_output(args, stderr=subprocess.STDOUT, universal_newlines=True)
File "C:\b\s\w\ir\cipd_bin_packages\cpython3\bin\lib\subprocess.py", line 415, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "C:\b\s\w\ir\cipd_bin_packages\cpython3\bin\lib\subprocess.py", line 493, in run
with Popen(*popenargs, **kwargs) as process:
File "C:\b\s\w\ir\cipd_bin_packages\cpython3\bin\lib\subprocess.py", line 858, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "C:\b\s\w\ir\cipd_bin_packages\cpython3\bin\lib\subprocess.py", line 1311, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified