From @masak

<masak> niecza​: .say for (1 ... 10) Z (10 ... 1)
<p6eval> niecza v9-11-g0f286c3​:
OUTPUT«1␤10␤2␤9␤3␤8␤4␤7␤5␤6␤6␤5␤7␤4␤8␤3␤9␤2␤10␤1␤»
<masak> rakudo​: .say for (1 ... 10) Z (10 ... 1)
<p6eval> rakudo f9d94f​: OUTPUT«(timeout)»
* masak submits rakudobug
<masak> niecza​: .say for (1 ... 10), (10 ... 1)
<p6eval> niecza v9-11-g0f286c3​:
OUTPUT«1␤2␤3␤4␤5␤6␤7␤8␤9␤10␤10␤9␤8␤7␤6␤5␤4␤3␤2␤1␤»
<masak> rakudo​: .say for (1 ... 10), (10 ... 1)
<p6eval> rakudo f9d94f​: OUTPUT«Not enough positional parameters
passed; got 0 but expected 1 [...]

Niecza is right in both cases. Rakudo times out or gives an incorrect
error; both of these behaviors are wrong.

From @pmichaud

Now fixed in f9d94fe. There were already todo'd tests for this bug in
spectests, they're now un-todo'd and marked with this ticket number.

Thanks for the report, closing ticket!

Pm

@pmichaud - Status changed from 'new' to 'resolved'