error[E0689]: can't call method `pow` on ambiguous numeric type `{float}` --> $DIR/issue-51874.rs:2:19 | LL | let a = (1.0).pow(1.0); | ^^^ | help: you must specify a concrete type for this numeric value, like `f32` | LL | let a = (1.0_f32).pow(1.0); | ~~~~~~~ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0689`.