How can I clean cargo stuff?
<p>I tried to install Parity (an Ethereum client) on my CHIP computer (similar to a Raspberry Pi with 4GB memory). I cloned the repository and ran</p>

<pre><code>cargo build --release
</code></pre>

<p>After a while I noticed that  about 40% of the memory was used and I stopped the installation process. There was only 20% used before, so now I want to clean all of this Rust stuff. How can I do that?</p>