error: used the `ceil` method with a whole number float
  --> $DIR/unused_rounding.rs:5:13
   |
LL |     let _ = 1f32.ceil();
   |             ^^^^^^^^^^^ help: remove the `ceil` method call: `1f32`
   |
   = note: `-D clippy::unused-rounding` implied by `-D warnings`

error: used the `floor` method with a whole number float
  --> $DIR/unused_rounding.rs:6:13
   |
LL |     let _ = 1.0f64.floor();
   |             ^^^^^^^^^^^^^^ help: remove the `floor` method call: `1.0f64`

error: used the `round` method with a whole number float
  --> $DIR/unused_rounding.rs:7:13
   |
LL |     let _ = 1.00f32.round();
   |             ^^^^^^^^^^^^^^^ help: remove the `round` method call: `1.00f32`

error: aborting due to 3 previous errors