Unnecessary linebreaks in GitHub Actions output

The stdout of my build command contains a lot of linebreaks that appear out of nowhere.

I'm not sure where they come from; I don't think they're purely misinterpreted ANSI codes.

```
Downloaded clap_complete_command v0.5.1

Compiling proc-macro2 v1.0.66
Compiling unicode-ident v1.0.11


Compiling libc v0.2.147


Compiling autocfg v1.1.0



Compiling

quote
v
1
.
0
.
33





Compiling

syn
v
2
.
0
.
31
```