error[E0277]: cannot multiply `i32` by `f32`
  --> $DIR/binop-mul-i32-f32.rs:2:7
   |
LL |     x * y
   |       ^ no implementation for `i32 * f32`
   |
   = help: the trait `Mul<f32>` is not implemented for `i32`
   = help: the following other types implement trait `Mul<Rhs>`:
             `&'a i32` implements `Mul<i32>`
             `&i32` implements `Mul<&i32>`
             `i32` implements `Mul<&i32>`
             `i32` implements `Mul`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0277`.