Trying to use Dustmite

[Nordlöw via Digitalmars-d-learn]

On Wednesday, 19 October 2016 at 08:50:47 UTC, Nordlöw wrote:
> I want to reduce with respect to AssertError thrown in the 
> function `err`. BUt when I call
>
>     dustmite src 'dmd tester && ./tester | grep -qF "Assertion 
> failure"'

Found it. Shall be:

     dustmite src 'dmd tester && ./tester 2>&1 | grep -qF 
"Assertion failure"'