another infinite recursion

[gtrak]

I think the fix to #301 didn't address what the user posted. It had self in the args.

I also hit the same issue myself and it was tough to debug.

failing test case:
gtrak@8c86fdf#diff-52497d2243f5bec77c5ad6dc288f06f636be715b31c620c8ffc3ccaba340bacf

stderr:

┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
error[E0425]: cannot find value `__FAIL__` in this scope
 --> tests/ui/unconditional-recursion-2.rs:8:5
  |
8 |     __FAIL__;
  |     ^^^^^^^^ not found in this scope
┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈