Tip: In she'll context, it is good style to always print argv[0] in log lines, ie the program name. When myscript.rs reports<p><pre><code> INFO: blabla
</code></pre>
It should better report<p><pre><code> myscript.rs: blabla
or myscript.rs: INFO: blabla
</code></pre>
This helps identifying the source when the script is part of a series of pipes, or running in background, etc