https://doc.rust-lang.org/beta/nightly-rustc/rustc_lint/lints/unexpected_cfg_name/struct.FoundWithSimilarValue.html
FoundWithSimilarValue in rustc_lint::lints::unexpected_cfg_name - Rust
API documentation for the Rust `FoundWithSimilarValue` struct in crate `rustc_lint`.
rustclintunexpectedcfgname