Function certificate_check

pub fn certificate_check(
    gctx: &GlobalContext,
    cert: &Cert<'_>,
    host: &str,
    port: Option<u16>,
    config_known_hosts: Option<&Vec<Value<String>>>,
    diagnostic_home_config: &str,
) -> CargoResult<CertificateCheckStatus>

The git2 callback used to validate a certificate (only ssh known hosts are validated).