error: use `.collect()` instead of `::from_iter()`
  --> $DIR/from_iter_instead_of_collect.rs:10:9
   |
LL |         Vec::from_iter(iter_expr);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::from-iter-instead-of-collect` implied by `-D warnings`
   = help: consider using `iter_expr.collect()`

error: use `.collect()` instead of `::from_iter()`
  --> $DIR/from_iter_instead_of_collect.rs:11:9
   |
LL |         HashMap::<usize, &i8>::from_iter(vec![5, 5, 5, 5].iter().enumerate());
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: consider using `vec![5, 5, 5, 5].iter().enumerate().collect()`

error: aborting due to 2 previous errors