Linux plugin_test is 3.16% flaky

[fluttergithubbot]

The post-submit test builder Linux plugin_test had a flaky ratio 3.16% for the past (up to) 100 commits, which is above our 2.00% threshold.

One recent flaky example for a same commit: https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20plugin_test/18496
Commit: 207e78e

Flaky builds:
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20plugin_test/18496
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20plugin_test/18494
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20plugin_test/18413

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

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).

[stuartmorgan]

These are all network errors (NDK download, contacting pub), so no related to the test.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.