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#[cfg(feature = "cli")] pub mod cli; #[cfg(feature = "errors")] pub mod error; #[cfg(feature = "errors")] pub use error::{Cause, CausedResult, Error}; #[cfg(feature = "sys")] pub mod sys; #[cfg(test)] mod tests { #[test] fn it_works() { assert_eq!(2 + 2, 4); } }