[pcwalton]

Go does not warn you if you forget to handle an error. It only does so if the function in question also returned a value that you're using. There exist important functions that don't return non-error values and report errors that you very much would like to avoid dropping on the floor: os.Chdir() for example.

[garfij]

While this is technically true, I've considered `errcheck` to be standard tooling for what feels like forever now, and it does exactly this; make sure you're checking your errors.