I feel like finding bugs in golang is a non issue. The language is typed, so obvious problems are caught early in the editor. Unit tests mop up the rest (unit tests which are also written by copilot in my case).
How I write unit tests: Open the chat menu, paste in function signature, describe the tests I want. Out pop the tests. Run, fix code as needed. Add more tests, etc. Super easy.
Or way easier, build an harness, then just copy-paste the few tests you created at the beginning, because test codes is the most repetitive code I've seen. No need to rely on external services and much more simpler to maintain and reason about.
How I write unit tests: Open the chat menu, paste in function signature, describe the tests I want. Out pop the tests. Run, fix code as needed. Add more tests, etc. Super easy.