error: this call to `as_ref` does nothing
  --> $DIR/useless_asref.rs:33:18
   |
33 |         foo_rstr(rstr.as_ref());
   |                  ^^^^^^^^^^^^^ help: try this: `rstr`
   |
note: lint level defined here
  --> $DIR/useless_asref.rs:3:9
   |
3  | #![deny(clippy::useless_asref)]
   |         ^^^^^^^^^^^^^^^^^^^^^

error: this call to `as_ref` does nothing
  --> $DIR/useless_asref.rs:35:20
   |
35 |         foo_rslice(rslice.as_ref());
   |                    ^^^^^^^^^^^^^^^ help: try this: `rslice`

error: this call to `as_mut` does nothing
  --> $DIR/useless_asref.rs:39:21
   |
39 |         foo_mrslice(mrslice.as_mut());
   |                     ^^^^^^^^^^^^^^^^ help: try this: `mrslice`

error: this call to `as_ref` does nothing
  --> $DIR/useless_asref.rs:41:20
   |
41 |         foo_rslice(mrslice.as_ref());
   |                    ^^^^^^^^^^^^^^^^ help: try this: `mrslice`

error: this call to `as_ref` does nothing
  --> $DIR/useless_asref.rs:48:20
   |
48 |         foo_rslice(rrrrrslice.as_ref());
   |                    ^^^^^^^^^^^^^^^^^^^ help: try this: `rrrrrslice`

error: this call to `as_ref` does nothing
  --> $DIR/useless_asref.rs:50:18
   |
50 |         foo_rstr(rrrrrstr.as_ref());
   |                  ^^^^^^^^^^^^^^^^^ help: try this: `rrrrrstr`

error: this call to `as_mut` does nothing
  --> $DIR/useless_asref.rs:55:21
   |
55 |         foo_mrslice(mrrrrrslice.as_mut());
   |                     ^^^^^^^^^^^^^^^^^^^^ help: try this: `mrrrrrslice`

error: this call to `as_ref` does nothing
  --> $DIR/useless_asref.rs:57:20
   |
57 |         foo_rslice(mrrrrrslice.as_ref());
   |                    ^^^^^^^^^^^^^^^^^^^^ help: try this: `mrrrrrslice`

error: this call to `as_ref` does nothing
  --> $DIR/useless_asref.rs:60:16
   |
60 |     foo_rrrrmr((&&&&MoreRef).as_ref());
   |                ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `(&&&&MoreRef)`

error: this call to `as_mut` does nothing
   --> $DIR/useless_asref.rs:106:13
    |
106 |     foo_mrt(mrt.as_mut());
    |             ^^^^^^^^^^^^ help: try this: `mrt`

error: this call to `as_ref` does nothing
   --> $DIR/useless_asref.rs:108:12
    |
108 |     foo_rt(mrt.as_ref());
    |            ^^^^^^^^^^^^ help: try this: `mrt`

error: aborting due to 11 previous errors