Function clippy_lints::utils::span_help_and_lint

pub fn span_help_and_lint<'a, 'tcx: 'a, T: LintContext<'tcx>>(cx: &'a T,
                                                              lint: &'static Lint,
                                                              span: Span,
                                                              msg: &str,
                                                              help: &str)