1 error: this loop could be written as a `while let` loop
2 --> $DIR/while_loop.rs:9:5
5 10 | | if let Some(_x) = y {
11 | |_____^ help: try: `while let Some(_x) = y { .. }`
13 = note: `-D while-let-loop` implied by `-D warnings`
15 error: this loop could be written as a `while let` loop
16 --> $DIR/while_loop.rs:22:5
20 24 | | Some(_x) => true,
24 | |_____^ help: try: `while let Some(_x) = y { .. }`
26 error: this loop could be written as a `while let` loop
27 --> $DIR/while_loop.rs:28:5
30 29 | | let x = match y {
34 34 | | let _str = "foo";
36 | |_____^ help: try: `while let Some(x) = y { .. }`
38 error: this loop could be written as a `while let` loop
39 --> $DIR/while_loop.rs:36:5
42 37 | | let x = match y {
46 42 | | { let _b = "foobar"; }
48 | |_____^ help: try: `while let Some(x) = y { .. }`
50 error: this loop could be written as a `while let` loop
51 --> $DIR/while_loop.rs:58:5
54 59 | | let (e, l) = match "".split_whitespace().next() {
55 60 | | Some(word) => (word.is_empty(), word.len()),
58 64 | | let _ = (e, l);
60 | |_____^ help: try: `while let Some(word) = "".split_whitespace().next() { .. }`
62 error: this loop could be written as a `for` loop
63 --> $DIR/while_loop.rs:68:5
65 68 | / while let Option::Some(x) = iter.next() {
66 69 | | println!("{}", x);
68 | |_____^ help: try: `for x in iter { .. }`
70 = note: `-D while-let-on-iterator` implied by `-D warnings`
72 error: this loop could be written as a `for` loop
73 --> $DIR/while_loop.rs:73:5
75 73 | / while let Some(x) = iter.next() {
76 74 | | println!("{}", x);
78 | |_____^ help: try: `for x in iter { .. }`
80 error: this loop could be written as a `for` loop
81 --> $DIR/while_loop.rs:78:5
83 78 | while let Some(_) = iter.next() {}
84 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for _ in iter { .. }`
86 error: this loop could be written as a `while let` loop
87 --> $DIR/while_loop.rs:118:5
90 119 | | let _ = match iter.next() {
91 120 | | Some(ele) => ele,
96 | |_____^ help: try: `while let Some(ele) = iter.next() { .. }`
98 error: empty `loop {}` detected. You may want to either use `panic!()` or add `std::thread::sleep(..);` to the loop body.
99 --> $DIR/while_loop.rs:123:9
104 = note: `-D empty-loop` implied by `-D warnings`
106 error: this loop could be written as a `for` loop
107 --> $DIR/while_loop.rs:183:9
109 183 | / while let Some(v) = y.next() { // use a for loop here
111 | |_________^ help: try: `for v in y { .. }`