error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:8:5
   |
LL |     while let Option::Some(x) = iter.next() {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x in iter`
   |
   = note: `-D clippy::while-let-on-iterator` implied by `-D warnings`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:13:5
   |
LL |     while let Some(x) = iter.next() {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x in iter`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:18:5
   |
LL |     while let Some(_) = iter.next() {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for _ in iter`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:94:9
   |
LL |         while let Some([..]) = it.next() {}
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for [..] in it`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:101:9
   |
LL |         while let Some([_x]) = it.next() {}
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for [_x] in it`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:114:9
   |
LL |         while let Some(x @ [_]) = it.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x @ [_] in it`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:134:9
   |
LL |         while let Some(_) = y.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for _ in y`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:191:9
   |
LL |         while let Some(m) = it.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for m in it.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:202:5
   |
LL |     while let Some(n) = it.next() {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for n in it`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:204:9
   |
LL |         while let Some(m) = it.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for m in it`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:213:9
   |
LL |         while let Some(m) = it.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for m in it`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:222:9
   |
LL |         while let Some(m) = it.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for m in it.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:239:9
   |
LL |         while let Some(m) = it.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for m in it.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:254:13
   |
LL |             while let Some(i) = self.0.next() {
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for i in self.0.by_ref()`

error: manual `!RangeInclusive::contains` implementation
  --> $DIR/while_let_on_iterator.rs:255:20
   |
LL |                 if i < 3 || i > 7 {
   |                    ^^^^^^^^^^^^^^ help: use: `!(3..=7).contains(&i)`
   |
   = note: `-D clippy::manual-range-contains` implied by `-D warnings`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:286:13
   |
LL |             while let Some(i) = self.0.0.0.next() {
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for i in self.0.0.0.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:315:5
   |
LL |     while let Some(n) = it.next() {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for n in it.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:327:9
   |
LL |         while let Some(x) = it.next() {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x in it.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:341:5
   |
LL |     while let Some(x) = it.next() {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x in it.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:352:5
   |
LL |     while let Some(x) = it.0.next() {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x in it.0.by_ref()`

error: this loop could be written as a `for` loop
  --> $DIR/while_let_on_iterator.rs:371:5
   |
LL |     while let Some(..) = it.next() {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for _ in it`

error: aborting due to 21 previous errors