| error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? |
| --> $DIR/rustc-private.rs:3:1 |
| | |
| LL | extern crate libc; |
| | ^^^^^^^^^^^^^^^^^^ |
| | |
| = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information |
| = help: add `#![feature(rustc_private)]` to the crate attributes to enable |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0658`. |
