error[E0689]: can't call method `recip` on ambiguous numeric type `{float}`
  --> $DIR/issue-90974.rs:2:25
   |
LL |     println!("{}", (3.).recip());
   |                         ^^^^^
   |
help: you must specify a concrete type for this numeric value, like `f32`
   |
LL |     println!("{}", (3_f32).recip());
   |                     ~~~~~

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0689`.