1 error[E0658]: `cfg(doc)` is experimental and subject to change
2 --> $DIR/feature-gate-doc_cfg-cfg-rustdoc.rs:1:7
7 = note: for more information, see https://github.com/rust-lang/rust/issues/43781
8 = help: add `#![feature(doc_cfg)]` to the crate attributes to enable
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0658`.