error[E0282]: type annotations needed --> $DIR/method-chain.rs:15:33 | LL | Foo.bar().bar().bar().bar().baz(); | ^^^ cannot infer the value of the const parameter `N` declared on the method `baz` | help: consider specifying the generic argument | LL | Foo.bar().bar().bar().bar().baz::(); | +++++ error: aborting due to previous error For more information about this error, try `rustc --explain E0282`.