error[E0107]: method takes 0 generic arguments but 1 generic argument was supplied --> $DIR/effect_param.rs:9:9 | LL | i8::checked_sub::(42, 43); | ^^^^^^^^^^^--------- help: remove these generics | | | expected 0 generic arguments error[E0107]: method takes 0 generic arguments but 1 generic argument was supplied --> $DIR/effect_param.rs:4:9 | LL | i8::checked_sub::(42, 43); | ^^^^^^^^^^^-------- help: remove these generics | | | expected 0 generic arguments error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0107`.