Error while path patching libc as one of rustc's dependencies.

[zetanumbers]

Hello, i am trying to build rustc with patched libc. Patching via git works great until i try to patch libc using path, it prints this weird error message:

I could fix it with different methods, but then it would complain about, for example, freebsd11 inside of cfg attribute, which would be a error instead of warning propagated to error, i believe.

And cargo check in this directory doesn't emit any warnings.

[zetanumbers]

If i understand it correctly, i was using cargo 1.61.0-beta.1 as a stage 0.

[zetanumbers]

So i changed the stage0 rustc, cargo and rustfmt to nightly-2022-05-19, and that fixed it.

[zetanumbers]

I guess libc isn't a problem, but stage0 compiler is.