error: unnecessary `if let` since only the `Some` variant of the iterator element is used
  --> $DIR/manual_flatten.rs:6:5
   |
LL |       for n in x {
   |       ^        - help: try: `x.into_iter().flatten()`
   |  _____|
   | |
LL | |         if let Some(y) = n {
LL | |             println!("{}", y);
LL | |         }
LL | |     }
   | |_____^
   |
   = note: `-D clippy::manual-flatten` implied by `-D warnings`
help: ...and remove the `if let` statement in the for loop
  --> $DIR/manual_flatten.rs:7:9
   |
LL | /         if let Some(y) = n {
LL | |             println!("{}", y);
LL | |         }
   | |_________^

error: unnecessary `if let` since only the `Ok` variant of the iterator element is used
  --> $DIR/manual_flatten.rs:14:5
   |
LL |       for n in y.clone() {
   |       ^        --------- help: try: `y.clone().into_iter().flatten()`
   |  _____|
   | |
LL | |         if let Ok(n) = n {
LL | |             println!("{}", n);
LL | |         };
LL | |     }
   | |_____^
   |
help: ...and remove the `if let` statement in the for loop
  --> $DIR/manual_flatten.rs:15:9
   |
LL | /         if let Ok(n) = n {
LL | |             println!("{}", n);
LL | |         };
   | |_________^

error: unnecessary `if let` since only the `Ok` variant of the iterator element is used
  --> $DIR/manual_flatten.rs:21:5
   |
LL |       for n in &y {
   |       ^        -- help: try: `y.iter().flatten()`
   |  _____|
   | |
LL | |         if let Ok(n) = n {
LL | |             println!("{}", n);
LL | |         }
LL | |     }
   | |_____^
   |
help: ...and remove the `if let` statement in the for loop
  --> $DIR/manual_flatten.rs:22:9
   |
LL | /         if let Ok(n) = n {
LL | |             println!("{}", n);
LL | |         }
   | |_________^

error: unnecessary `if let` since only the `Ok` variant of the iterator element is used
  --> $DIR/manual_flatten.rs:31:5
   |
LL |       for n in z {
   |       ^        - help: try: `z.into_iter().flatten()`
   |  _____|
   | |
LL | |         if let Ok(n) = n {
LL | |             println!("{}", n);
LL | |         }
LL | |     }
   | |_____^
   |
help: ...and remove the `if let` statement in the for loop
  --> $DIR/manual_flatten.rs:32:9
   |
LL | /         if let Ok(n) = n {
LL | |             println!("{}", n);
LL | |         }
   | |_________^

error: unnecessary `if let` since only the `Some` variant of the iterator element is used
  --> $DIR/manual_flatten.rs:40:5
   |
LL |       for n in z {
   |       ^        - help: try: `z.flatten()`
   |  _____|
   | |
LL | |         if let Some(m) = n {
LL | |             println!("{}", m);
LL | |         }
LL | |     }
   | |_____^
   |
help: ...and remove the `if let` statement in the for loop
  --> $DIR/manual_flatten.rs:41:9
   |
LL | /         if let Some(m) = n {
LL | |             println!("{}", m);
LL | |         }
   | |_________^

error: aborting due to 5 previous errors