fn fail_url(user: &str) -> String {
        let mut output = String::with_capacity(user.len() + 10);
        output.push_str("?user=");
        output.push_str(user);
        output
    }
/// The `fail_url()` method is used to create a url that the user is sent
/// to when the authentication fails.  The default implementation
/// redirects the user to the /page?user=<ateempted_username>
/// which enables the form to display the username that was attempted
/// and unlike FlashMessages it will persist across refreshes
The `fail_url()` method is used to create a url that the user is sent
to when the authentication fails.  The default implementation
redirects the user to the /page?user=
which enables the form to display the username that was attempted
and unlike FlashMessages it will persist across refreshes
The ` fail_url () ` method is used to create a url that the user is sent to when the authentication fails . The default implementation redirects the user to the / page?user = which enables the form to display the username that was attempted and unlike FlashMessages it will persist across refreshes
fn fail_url(user: &str) -> String {
        let mut output = String::with_capacity(user.len() + 10);
        output.push_str("?user=");
        output.push_str(user);
        output
    }
fn fail_url ( user : & str ) -> String { let mut output = String :: with_capacity ( user . len ( ) + 10 ) ; output . push_str ( " " ) ; output . push_str ( user ) ; output }
The `fail_url()` method is used to create a url that the user is sent
to when the authentication fails.
The ` fail_url () ` method is used to create a url that the user is sent to when the authentication fails .
user
&str
user
&str