Apply applicability

tests/ui/needless_collect.stderr

@@ -1,28 +1,28 @@
-error: you are collecting an iterator to check its length
+error: avoid using `collect()` when not needed
  --> $DIR/needless_collect.rs:7:28
   |
 7 |     let len = sample.iter().collect::<Vec<_>>().len();
-  |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing with: `.count()`
+  |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `.count()`
   |
   = note: `-D needless-collect` implied by `-D warnings`
 
-error: you are collecting an iterator to check if it is empty
+error: avoid using `collect()` when not needed
  --> $DIR/needless_collect.rs:8:21
   |
 8 |     if sample.iter().collect::<Vec<_>>().is_empty() {
-  |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing with: `.next().is_none()`
+  |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `.next().is_none()`
 
-error: you are collecting an iterator to check if contains an element
+error: avoid using `collect()` when not needed
   --> $DIR/needless_collect.rs:11:27
    |
 11 |     sample.iter().cloned().collect::<Vec<_>>().contains(&1);
-   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing with: `.any(|&x| x == 1)`
+   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `.any(|&x| x == 1)`
 
-error: you are collecting an iterator to check its length
+error: avoid using `collect()` when not needed
   --> $DIR/needless_collect.rs:12:34
    |
 12 |     sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().len();
-   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing with: `.count()`
+   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `.count()`
 
 error: aborting due to 4 previous errors