error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:50:18
   |
LL |         foo_rstr(rstr.as_ref());
   |                  ^^^^^^^^^^^^^ help: try: `rstr`
   |
note: the lint level is defined here
  --> tests/ui/useless_asref.rs:1:9
   |
LL | #![deny(clippy::useless_asref)]
   |         ^^^^^^^^^^^^^^^^^^^^^

error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:52:20
   |
LL |         foo_rslice(rslice.as_ref());
   |                    ^^^^^^^^^^^^^^^ help: try: `rslice`

error: this call to `as_mut` does nothing
  --> tests/ui/useless_asref.rs:56:21
   |
LL |         foo_mrslice(mrslice.as_mut());
   |                     ^^^^^^^^^^^^^^^^ help: try: `mrslice`

error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:58:20
   |
LL |         foo_rslice(mrslice.as_ref());
   |                    ^^^^^^^^^^^^^^^^ help: try: `mrslice`

error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:65:20
   |
LL |         foo_rslice(rrrrrslice.as_ref());
   |                    ^^^^^^^^^^^^^^^^^^^ help: try: `rrrrrslice`

error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:67:18
   |
LL |         foo_rstr(rrrrrstr.as_ref());
   |                  ^^^^^^^^^^^^^^^^^ help: try: `rrrrrstr`

error: this call to `as_mut` does nothing
  --> tests/ui/useless_asref.rs:72:21
   |
LL |         foo_mrslice(mrrrrrslice.as_mut());
   |                     ^^^^^^^^^^^^^^^^^^^^ help: try: `mrrrrrslice`

error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:74:20
   |
LL |         foo_rslice(mrrrrrslice.as_ref());
   |                    ^^^^^^^^^^^^^^^^^^^^ help: try: `mrrrrrslice`

error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:78:16
   |
LL |     foo_rrrrmr((&&&&MoreRef).as_ref());
   |                ^^^^^^^^^^^^^^^^^^^^^^ help: try: `(&&&&MoreRef)`

error: this call to `as_mut` does nothing
  --> tests/ui/useless_asref.rs:128:13
   |
LL |     foo_mrt(mrt.as_mut());
   |             ^^^^^^^^^^^^ help: try: `mrt`

error: this call to `as_ref` does nothing
  --> tests/ui/useless_asref.rs:130:12
   |
LL |     foo_rt(mrt.as_ref());
   |            ^^^^^^^^^^^^ help: try: `mrt`

error: this call to `as_ref.map(...)` does nothing
  --> tests/ui/useless_asref.rs:141:13
   |
LL |     let z = x.as_ref().map(String::clone);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `x.clone()`

error: this call to `as_ref.map(...)` does nothing
  --> tests/ui/useless_asref.rs:143:13
   |
LL |     let z = x.as_ref().map(|z| z.clone());
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `x.clone()`

error: this call to `as_ref.map(...)` does nothing
  --> tests/ui/useless_asref.rs:145:13
   |
LL |     let z = x.as_ref().map(|z| String::clone(z));
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `x.clone()`

error: this call to `as_ref.map(...)` does nothing
  --> tests/ui/useless_asref.rs:169:9
   |
LL |         x.field.as_ref().map(|v| v.clone());
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `x.field.clone()`

error: this call to `as_ref.map(...)` does nothing
  --> tests/ui/useless_asref.rs:171:9
   |
LL |         x.field.as_ref().map(Clone::clone);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `x.field.clone()`

error: this call to `as_ref.map(...)` does nothing
  --> tests/ui/useless_asref.rs:173:9
   |
LL |         x.field.as_ref().map(|v| Clone::clone(v));
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `x.field.clone()`

error: this call to `as_ref.map(...)` does nothing
  --> tests/ui/useless_asref.rs:178:9
   |
LL |         Some(1).as_ref().map(|&x| x.clone());
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Some(1).clone()`

error: aborting due to 18 previous errors