Matthias Krüger b8e28d1426
Rollup merge of #126112 - Kobzol:runmake-source-root, r=jieyouxu
Clean up source root in run-make tests

The name `S` isn't exactly the most descriptive, and we also shouldn't need to pass it when building (actually I think that most of the env. vars that we pass to `cargo` here are probably not really needed).

Related issue: https://github.com/rust-lang/rust/issues/126071

r? ```@jieyouxu```
2024-06-07 20:14:32 +02:00
..
2024-06-07 08:50:18 +00:00