error[E0412]: cannot find type `B` in this scope --> $DIR/ui-testing-optout.rs:4:10 | 4 | type A = B; //~ ERROR | ^ help: a type alias with a similar name exists: `A` error[E0412]: cannot find type `D` in this scope --> $DIR/ui-testing-optout.rs:10:10 | 10 | type C = D; //~ ERROR | ^ help: a type alias with a similar name exists: `A` error[E0412]: cannot find type `F` in this scope --> $DIR/ui-testing-optout.rs:95:10 | 95 | type E = F; //~ ERROR | ^ help: a type alias with a similar name exists: `A` error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0412`.