error[E0119]: conflicting implementations of trait `C` for type `u32` --> $DIR/coherence-overlap-trait-alias.rs:15:1 | LL | impl C for T {} | ------------------- first implementation here LL | impl C for u32 {} | ^^^^^^^^^^^^^^ conflicting implementation for `u32` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0119`.