Failure to connect to webdriver process on macOS 13 in CI #136972
Description
Occasionally when running macOS web engine tests in CI on macOS 13, the webdriver process fails to connect
Running on MacOS. Will check the file and user limits.
User limits too low increasing the user limits
Problem changing the user limit. Please try to reboot to use the higher limits. error: \n/Volumes/Work/s/w/ir/cache/builder/src/flutter/lib/web_ui/dev/felt: line 118: ulimit: max user processes: cannot modify limit: Operation not permitted
Running `dart pub get` in 'engine/src/flutter/lib/web_ui'
/Volumes/Work/s/w/ir/cache/gold/goldctl auth --work-dir /Volumes/Work/s/w/ir/cache/builder/src/flutter/lib/web_ui/.dart_tool/skia_gold/safari-dart2js-html-engine/temp --luci
[Webdriver][Error] Unable to start the server: Operation not permitted
[safari-dart2js-html-engine] Running...
00:00 +0: loading initialization_test.dart
00:00 +0: loading initialization_test.dart
Failed to connect to webdriver process. Retrying in 100 ms
Failed to connect to webdriver process. Retrying in 100 ms
Failed to connect to webdriver process. Retrying in 100 ms
...
The problem does not appear to be specific to a certain test as it's happening in both test: run suite safari-dart2js-html-engine and test: run suite safari-dart2js-canvaskit-canvaskit
Examples:
https://ci.chromium.org/ui/p/flutter/builders/try/Mac%20Engine%20Drone/439886/overview
https://luci-milo.appspot.com/ui/p/flutter/builders/try/Mac%20Engine%20Drone/453877/overview