error: anonymous parameters are deprecated and will be removed in the next edition. --> $DIR/future-incompatible-lint-group.rs:4:10 | LL | fn f(u8) {} //~ ERROR anonymous parameters are deprecated | ^^ help: Try naming the parameter or explicitly ignoring it: `_: u8` | note: lint level defined here --> $DIR/future-incompatible-lint-group.rs:1:9 | LL | #![deny(future_incompatible)] | ^^^^^^^^^^^^^^^^^^^ = note: #[deny(anonymous_parameters)] implied by #[deny(future_incompatible)] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition! = note: for more information, see issue #41686 error: aborting due to previous error