LL | trait T2 : T1 {
| ^^
= note: ...which again requires computing the supertraits of `T1`, completing the cycle
+note: cycle used when collecting item types in top-level module
+ --> $DIR/issue-12511.rs:1:1
+ |
+LL | trait T1 : T2 {
+ | ^^^^^^^^^^^^^
error: aborting due to previous error