error[E0412]: cannot find type `B` in this scope --> $DIR/ui-testing-optout.rs:4:10 | 4 | type A = B; //~ ERROR | ^ did you mean `A`? error[E0412]: cannot find type `D` in this scope --> $DIR/ui-testing-optout.rs:17:10 | 17 | type C = D; //~ ERROR | ^ did you mean `A`? error[E0412]: cannot find type `F` in this scope --> $DIR/ui-testing-optout.rs:102:10 | 102 | type E = F; //~ ERROR | ^ did you mean `A`? error: aborting due to 3 previous errors If you want more information on this error, try using "rustc --explain E0412"