error[E0433]: failed to resolve: use of undeclared crate or module `lib2`
  --> $DIR/issue-121103.rs:1:38
   |
LL | fn main(_: <lib2::GenericType<42> as lib2::TypeFn>::Output) {}
   |                                      ^^^^ use of undeclared crate or module `lib2`

error[E0433]: failed to resolve: use of undeclared crate or module `lib2`
  --> $DIR/issue-121103.rs:1:13
   |
LL | fn main(_: <lib2::GenericType<42> as lib2::TypeFn>::Output) {}
   |             ^^^^ use of undeclared crate or module `lib2`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0433`.