New comment by Logarithmus on void-packages repository

https://github.com/void-linux/void-packages/pull/29756#issuecomment-832978332

Comment:
@ericonr `sccache-0.2.13` is buggy and doesn't work. I always get this error when I run `cargo build`:

```
Caused by:
  process didn't exit successfully: `/usr/bin/sccache rustc - --crate-name ___ --print=file-names --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit code: 2)
  --- stderr
  error: failed to execute compile
  caused by: Failed to send data to or receive data from server
  caused by: Failed to read response header
  caused by: failed to fill whole buffer
```

More info: https://github.com/mozilla/sccache/issues/887, https://github.com/mozilla/sccache/issues/887#issuecomment-737938142
As you can see, version 0.2.13 is unusable. I noticed that and thus filed this PR back in March. Unfortunately, you don't seem interested in merging it, so I decided to provide some proofs that this change is very important.

I've also managed to add `sccache` support to `xbps-src`, just like `ccache`. Obviously, it doesn't work on `sccache-0.2.15`, so this PR is a blocker.