let result: bool = Ok(something) == some_function_returning_result();

let result: bool = match some_function_returning_result() {
    Ok(something) => true,
    _ => false,
};

error[E0277]: can't compare `errors::Error` with `errors::Error`
   --> src/rustup/toolchain.rs:349:35
    |
349 |                     Ok(something) == some_function_returning_result()
    |                                   ^^ no implementation for `errors::Error == errors::Error`
    |
    = help: the trait `std::cmp::PartialEq` is not implemented for `errors::Error`
    = note: required because of the requirements on the impl of `std::cmp::PartialEq` for `std::result::Result<std::string::String, errors::Error>`