1error[E0403]: the name `M` is already used for a generic parameter in this item's generic parameters 2 --> $DIR/self-referential.rs:1:30 3 | 4LL | trait Foo<const M: u8, const M: u8 = M> {} 5 | - ^ already used 6 | | 7 | first use of `M` 8 9error: aborting due to previous error 10 11For more information about this error, try `rustc --explain E0403`. 12