$ ante t.an --no-color
t.an:1:1 error: Type variable 't' is already in scope
type Foo t t = x: t
^^^^^^^^^^^^^^^^^^^
Desired error:
$ ante t.an --no-color
t.an:1:12 error: Type variable 't' is already in scope
type Foo t t = x: t
^
t.an:1:10 note: 't' was previously declared here
type Foo t t = x: t
^
Minimal repro for error:
Current error:
Desired error: