writeln!(stderr, ...) -> eprintln! #644
While working in other tasks, I noticed that there's a rather
It seems like the use of
Let me know if there's seomthing I'm missing!
While working in other tasks, I noticed that there's a rather inconsistent way to handle errors. In some places we use `eprintln!` and in others `writeln!` to standard error. It seems like the use of `writeln!` don't have an strong motive, as the output is always to standard error, the lock is always handled the same than `eprintln` and there's no obvious (to me) optimization, so I decided to use the more idiomatic `eprintln!` everywhere.