#85654 (comment) was very tricky to debug because the app crashed on launch with a codesigning error, but the flutter logging doesn't say what happened:
[hot_mode_dev_cycle_macos_target__benchmark] [STDOUT] stderr: [+1040 ms] Error waiting for a debug connection: The log reader stopped unexpectedly, or never started.
We should do something like #66092 for macOS to get crash logging from the debugger.