src/tools/clippy/tests/ui/map_flatten.stderr

   1 error: called `map(..).flatten()` on an `Iterator`
   2   --> $DIR/map_flatten.rs:18:46
   3    |
   4 LL |     let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id).flatten().collect();
   5    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(option_id)`
   6    |
   7    = note: `-D clippy::map-flatten` implied by `-D warnings`
   8
   9 error: called `map(..).flatten()` on an `Iterator`
  10   --> $DIR/map_flatten.rs:19:46
  11    |
  12 LL |     let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id_ref).flatten().collect();
  13    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(option_id_ref)`
  14
  15 error: called `map(..).flatten()` on an `Iterator`
  16   --> $DIR/map_flatten.rs:20:46
  17    |
  18 LL |     let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id_closure).flatten().collect();
  19    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(option_id_closure)`
  20
  21 error: called `map(..).flatten()` on an `Iterator`
  22   --> $DIR/map_flatten.rs:21:46
  23    |
  24 LL |     let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| x.checked_add(1)).flatten().collect();
  25    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(|x| x.checked_add(1))`
  26
  27 error: called `map(..).flatten()` on an `Iterator`
  28   --> $DIR/map_flatten.rs:24:46
  29    |
  30 LL |     let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect();
  31    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `flat_map` instead: `.flat_map(|x| 0..x)`
  32
  33 error: called `map(..).flatten()` on an `Option`
  34   --> $DIR/map_flatten.rs:27:39
  35    |
  36 LL |     let _: Option<_> = (Some(Some(1))).map(|x| x).flatten();
  37    |                                       ^^^^^^^^^^^^^^^^^^^^^ help: try using `and_then` instead: `.and_then(|x| x)`
  38
  39 error: called `map(..).flatten()` on an `Result`
  40   --> $DIR/map_flatten.rs:30:41
  41    |
  42 LL |     let _: Result<_, &str> = (Ok(Ok(1))).map(|x| x).flatten();
  43    |                                         ^^^^^^^^^^^^^^^^^^^^^ help: try using `and_then` instead: `.and_then(|x| x)`
  44
  45 error: aborting due to 7 previous errors
  46