reasoning

clippy_lints/src/needless_for_each.rs

@@ -68,7 +68,8 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessForEach {
             // e.g. `v.iter().for_each(f)` is simpler and clearer than using `for` loop.
             && let ExprKind::Closure(&Closure { body, .. }) = for_each_arg.kind
             && let body = cx.tcx.hir().body(body)
-            // Skip the lint if the body is not safe.
+            // Skip the lint if the body is not safe, so as not to suggest `for … in … unsafe {}`
+            // and suggesting `for … in … { unsafe { } }` is a little ugly.
             && let ExprKind::Block(Block { rules: BlockCheckMode::DefaultBlock, .. }, ..) = body.value.kind
         {
             let mut ret_collector = RetCollector::default();