error: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
  --> $DIR/lines_filter_map_ok.rs:11:31
   |
LL |     BufReader::new(f).lines().filter_map(Result::ok).for_each(|_| ());
   |                               ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
   |
note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
  --> $DIR/lines_filter_map_ok.rs:11:5
   |
LL |     BufReader::new(f).lines().filter_map(Result::ok).for_each(|_| ());
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: `-D clippy::lines-filter-map-ok` implied by `-D warnings`

error: `flat_map()` will run forever if the iterator repeatedly produces an `Err`
  --> $DIR/lines_filter_map_ok.rs:14:31
   |
LL |     BufReader::new(f).lines().flat_map(Result::ok).for_each(|_| ());
   |                               ^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
   |
note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
  --> $DIR/lines_filter_map_ok.rs:14:5
   |
LL |     BufReader::new(f).lines().flat_map(Result::ok).for_each(|_| ());
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

error: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
  --> $DIR/lines_filter_map_ok.rs:17:25
   |
LL |     io::stdin().lines().filter_map(Result::ok).for_each(|_| ());
   |                         ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
   |
note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
  --> $DIR/lines_filter_map_ok.rs:17:5
   |
LL |     io::stdin().lines().filter_map(Result::ok).for_each(|_| ());
   |     ^^^^^^^^^^^^^^^^^^^

error: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
  --> $DIR/lines_filter_map_ok.rs:19:25
   |
LL |     io::stdin().lines().filter_map(|x| x.ok()).for_each(|_| ());
   |                         ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
   |
note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
  --> $DIR/lines_filter_map_ok.rs:19:5
   |
LL |     io::stdin().lines().filter_map(|x| x.ok()).for_each(|_| ());
   |     ^^^^^^^^^^^^^^^^^^^

error: aborting due to 4 previous errors