Discovered while working on #151518 (details).

Repro

• Enable analytics/telemetry with flutter --enable-analytics
• Clear/delete your local analytics log file, this is usually stored in <home directory>/.dart-tool/dart-flutter-telemetry.log. We'll use this file later to see what analytics events were sent.
• Run a devicelab test locally. See dev/devicelab/README.md for full instructions, though I will provide steps here
  • In a terminal navigate to dev/devicelab.
  • Run a devicelab test that invokes flutter (probably all of them). On my macOS machine that's iOS-development ready, I ran ../../bin/cache/dart-sdk/bin/dart bin/test_runner.dart test -t native_assets_ios_simulator.

Expected behavior

Since this is a devicelab test, we should not send any analytics events regardless of whether analytics is enabled on the host machine.

Observed behavior

Open your dart-flutter-telemetry.log and search for "tool":{"value":"flutter-tool"}. This will be contained in flutter tool analytics events that will be sent off. Notice that there will be several events logged.