Sometime between commit d9d4c2c and commit f125805, dart fix --compare-to-golden began taking significantly longer.

See this flutter flakiness issue for instigating issue.

Expected

dart fix --compare-to-golden would run for ~1-2mins for packages\flutter\test_fixes

Luci logs with expected behavior, search for "packages/flutter/test_fixes", which will be towards the bottom of the output.

Actual

After an engine roll that did a dart SDK roll, the same dart fix --compare-to-golden call now takes between 6-10 minutes.

LUCI logs with new behavior, search for "packages/flutter/test_fixes", which will be towards the bottom of the output.