tests/ui/author/issue_3849.stdout

if let StmtKind::Let(local) = stmt.kind
    && let Some(init) = local.init
    && let ExprKind::Call(func, args) = init.kind
    && func.res(cx).is_diag_item(cx, sym::transmute)
    && args.len() == 1
    && let PatKind::Wild = local.pat.kind
{
    // report your lint here
}