error: this loop could be written as a `while let` loop --> $DIR/while_loop.rs:9:5 | 9 | / loop { 10 | | if let Some(_x) = y { 11 | | let _v = 1; 12 | | } else { 13 | | break 14 | | } 15 | | } | |_____^ help: try: `while let Some(_x) = y { .. }` | = note: `-D while-let-loop` implied by `-D warnings` error: this loop could be written as a `while let` loop --> $DIR/while_loop.rs:22:5 | 22 | / loop { 23 | | match y { 24 | | Some(_x) => true, 25 | | None => break 26 | | }; 27 | | } | |_____^ help: try: `while let Some(_x) = y { .. }` error: this loop could be written as a `while let` loop --> $DIR/while_loop.rs:28:5 | 28 | / loop { 29 | | let x = match y { 30 | | Some(x) => x, 31 | | None => break ... | 34 | | let _str = "foo"; 35 | | } | |_____^ help: try: `while let Some(x) = y { .. }` error: this loop could be written as a `while let` loop --> $DIR/while_loop.rs:36:5 | 36 | / loop { 37 | | let x = match y { 38 | | Some(x) => x, 39 | | None => break, ... | 42 | | { let _b = "foobar"; } 43 | | } | |_____^ help: try: `while let Some(x) = y { .. }` error: this loop could be written as a `while let` loop --> $DIR/while_loop.rs:58:5 | 58 | / loop { 59 | | let (e, l) = match "".split_whitespace().next() { 60 | | Some(word) => (word.is_empty(), word.len()), 61 | | None => break ... | 64 | | let _ = (e, l); 65 | | } | |_____^ help: try: `while let Some(word) = "".split_whitespace().next() { .. }` error: this loop could be written as a `for` loop --> $DIR/while_loop.rs:68:5 | 68 | / while let Option::Some(x) = iter.next() { 69 | | println!("{}", x); 70 | | } | |_____^ help: try: `for x in iter { .. }` | = note: `-D while-let-on-iterator` implied by `-D warnings` error: this loop could be written as a `for` loop --> $DIR/while_loop.rs:73:5 | 73 | / while let Some(x) = iter.next() { 74 | | println!("{}", x); 75 | | } | |_____^ help: try: `for x in iter { .. }` error: this loop could be written as a `for` loop --> $DIR/while_loop.rs:78:5 | 78 | while let Some(_) = iter.next() {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for _ in iter { .. }` error: this loop could be written as a `while let` loop --> $DIR/while_loop.rs:118:5 | 118 | / loop { 119 | | let _ = match iter.next() { 120 | | Some(ele) => ele, 121 | | None => break 122 | | }; 123 | | loop {} 124 | | } | |_____^ help: try: `while let Some(ele) = iter.next() { .. }` error: empty `loop {}` detected. You may want to either use `panic!()` or add `std::thread::sleep(..);` to the loop body. --> $DIR/while_loop.rs:123:9 | 123 | loop {} | ^^^^^^^ | = note: `-D empty-loop` implied by `-D warnings` error: this loop could be written as a `for` loop --> $DIR/while_loop.rs:183:9 | 183 | / while let Some(v) = y.next() { // use a for loop here 184 | | } | |_________^ help: try: `for v in y { .. }` error: aborting due to 11 previous errors