error[E0223]: ambiguous associated type
  --> $DIR/issue-23073.rs:6:17
   |
LL |     type FooT = <<Self as Bar>::Foo>::T;
   |                 ^^^^^^^^^^^^^^^^^^^^^^^
   |
help: if there were a trait named `Example` with associated type `T` implemented for `<Self as Bar>::Foo`, you could use the fully-qualified path
   |
LL |     type FooT = <<Self as Bar>::Foo as Example>::T;
   |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0223`.