so this is what fails if i comment it out:
```
---- decision::test::test_decide_00_10_XX stdout ----

thread 'decision::test::test_decide_00_10_XX' panicked at generic/src/decision.rs:1014:9:

dispatching { %_1 %_0 }:
  00 => %_2
  01 => %_2
  XX => %_3

%_0 = 0 =>
  %_1 = 0 => %_2
  %_1 = 1 => %_3
%_0 = 1 =>
  %_1 = 0 => %_2
  %_1 = 1 => %_3
 != 
%_1 = 0 => %_2
%_1 = 1 => %_3
```