Error message "I'm not sure what User "_200012" means"

[atacratic]

I saved a .u file containing an error. The error message talks about User "_200012", but I don't know who that is...

master> 
I'm not sure what User "_200012" means at line 4, columns 12-13

    4 | fac n = if n = 0 

Whatever it is, it has a type that conforms to Boolean.

@aryairani said:

I’m guessing that’s related to the Show instance for the new Var type; to accidentally Show-ing it in the message even now that it contains metadata

In subsequent attempts it seems to have stopped mentioning User.

[aryairani]

@atacratic Can you still reproduce this or similar in wip/branchless?

[atacratic]

Nope!