The post-submit test builder Mac_ios ios_picture_cache_complexity_scoring_perf__timeline_summary, which has been marked bringup: true, had 1 flakes over past 100 commits.

One recent flaky example for a same commit: https://ci.chromium.org/ui/p/flutter/builders/staging/Mac_ios%20ios_picture_cache_complexity_scoring_perf__timeline_summary/139
Commit: 64d9ea6

Flaky builds:
https://ci.chromium.org/ui/p/flutter/builders/staging/Mac_ios%20ios_picture_cache_complexity_scoring_perf__timeline_summary/139

Recent test runs:
https://flutter-dashboard.appspot.com/#/build?taskFilter=Mac_ios%20ios_picture_cache_complexity_scoring_perf__timeline_summary

Please follow https://github.com/flutter/flutter/wiki/Reducing-Test-Flakiness#fixing-flaky-tests to fix the flakiness and enable the test back after validating the fix (internal dashboard to validate: go/flutter_test_flakiness).