error[E0391]: cycle detected when computing the super predicates of `T1` --> $DIR/infinite-trait-alias-recursion.rs:3:12 | LL | trait T1 = T2; | ^^ | note: ...which requires computing the super predicates of `T2`... --> $DIR/infinite-trait-alias-recursion.rs:6:12 | LL | trait T2 = T3; | ^^ note: ...which requires computing the super predicates of `T3`... --> $DIR/infinite-trait-alias-recursion.rs:8:12 | LL | trait T3 = T1 + T3; | ^^ = note: ...which again requires computing the super predicates of `T1`, completing the cycle = note: trait aliases cannot be recursive note: cycle used when collecting item types in top-level module --> $DIR/infinite-trait-alias-recursion.rs:3:1 | LL | trait T1 = T2; | ^^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0391`.