error[E0608]: cannot index into a value of type `Foo` --> $DIR/slice-2.rs:7:6 | LL | &x[..]; | ^^^^^ error[E0608]: cannot index into a value of type `Foo` --> $DIR/slice-2.rs:8:6 | LL | &x[Foo..]; | ^^^^^^^^ error[E0608]: cannot index into a value of type `Foo` --> $DIR/slice-2.rs:9:6 | LL | &x[..Foo]; | ^^^^^^^^ error[E0608]: cannot index into a value of type `Foo` --> $DIR/slice-2.rs:10:6 | LL | &x[Foo..Foo]; | ^^^^^^^^^^^ error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0608`.