src/test/ui-fulldeps/internal-lints/default_hash_types.stderr

   1 error: prefer `FxHashMap` over `HashMap`, it has better performance
   2   --> $DIR/default_hash_types.rs:16:41
   3    |
   4 LL |     let _map: HashMap<String, String> = HashMap::default();
   5    |                                         ^^^^^^^
   6    |
   7 note: the lint level is defined here
   8   --> $DIR/default_hash_types.rs:4:9
   9    |
  10 LL | #![deny(rustc::default_hash_types)]
  11    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
  12    = note: a `use rustc_data_structures::fx::FxHashMap` may be necessary
  13
  14 error: prefer `FxHashMap` over `HashMap`, it has better performance
  15   --> $DIR/default_hash_types.rs:16:15
  16    |
  17 LL |     let _map: HashMap<String, String> = HashMap::default();
  18    |               ^^^^^^^^^^^^^^^^^^^^^^^
  19    |
  20    = note: a `use rustc_data_structures::fx::FxHashMap` may be necessary
  21
  22 error: prefer `FxHashSet` over `HashSet`, it has better performance
  23   --> $DIR/default_hash_types.rs:19:33
  24    |
  25 LL |     let _set: HashSet<String> = HashSet::default();
  26    |                                 ^^^^^^^
  27    |
  28    = note: a `use rustc_data_structures::fx::FxHashSet` may be necessary
  29
  30 error: prefer `FxHashSet` over `HashSet`, it has better performance
  31   --> $DIR/default_hash_types.rs:19:15
  32    |
  33 LL |     let _set: HashSet<String> = HashSet::default();
  34    |               ^^^^^^^^^^^^^^^
  35    |
  36    = note: a `use rustc_data_structures::fx::FxHashSet` may be necessary
  37
  38 error: aborting due to 4 previous errors
  39