declare_lint_pass!(UndroppedManuallyDrops => [UNDROPPED_MANUALLY_DROPS]);
-impl LateLintPass<'tcx> for UndroppedManuallyDrops {
+impl<'tcx> LateLintPass<'tcx> for UndroppedManuallyDrops {
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
if let Some([arg_0, ..]) = match_function_call(cx, expr, &paths::DROP) {
let ty = cx.typeck_results().expr_ty(arg_0);