AnyError

AnyError is a serializable casing for Error.

AnyError can be employed to transform other Error types into a serializable Error for transmission, preserving most of the essential information.

let err = fmt::Error {};
let e = AnyError::new(&err)
            .add_context(|| "running test")
            .add_context(|| "developing new feature");
println!("{:#}", e);

The above code will print error description with context:

core::fmt::Error: an error occurred when formatting an argument
    while: running test
    while: developing new feature