error[E0282]: type annotations needed --> $DIR/uninferred-consts.rs:9:9 | LL | Foo.foo(); | ^^^ cannot infer the value of the const parameter `A` declared on the method `foo` | help: consider specifying the generic arguments | LL | Foo.foo::(); | ++++++++ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0282`.