In flutter/devtools#8621 (which requires https://dart-review.googlesource.com/c/sdk/+/366421), I am adding support for connecting a debug version of DevTools ran with flutter run to a locally running instance of the DevTools server.

Without the --verbose flag (here), the flutterRunProcess in devtools/tool/lib/commands/serve.dart exits unexpectedly with code 255. When I add the --verbose flag to the flutter run command, the process does not exit as expcted.

Repro steps:

1. Patch Support connecting debug mode DevTools app to DevTools server devtools#8621 and https://dart-review.googlesource.com/c/sdk/+/366421
2. From anywhere in the DevTools repo, run dt serve --run-app.