error[E0119]: conflicting implementations of trait `Into<_>` for type `GenX<_>` --> $DIR/issue-27403.rs:5:1 | LL | impl Into for GenX { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: conflicting implementation in crate `core`: - impl Into for T where U: From; error: aborting due to previous error For more information about this error, try `rustc --explain E0119`.