http://irclog.perlgeek.de/perl6/2015-09-14#i_11216866
> 19:18 jnthn https://rt.perl.org/Ticket/Display.html?id=125978 seems stable > locally > 19:18 Perhaps thanks to my invocation race fixes > [...] > 19:19 jnthn cdc: Maybe you could test ^^ on latest I did some tests, and sadly it still segfaults: $ perl6 -e "say 'ip'.IO.lines.hyper.map(* ~~ /<{ (1...255).list }> '.'/).list" *** Error in `/usr/local/cedric/.rakudobrew/moar-nom/install/bin/moar': double free or corruption (fasttop): 0x00007f6a94380bf0 *** Incompatible MROs in P6opaque rebless in any mixin at gen/moar/m-Metamodel.nqp:1273 in whatevercode at -e:1 and: $ perl6 -e "say 'ip'.IO.lines.hyper.map(* ~~ /<{ (1...255).list }> '.'/).list" *** Error in `/usr/local/cedric/.rakudobrew/moar-nom/install/bin/moar': free(): invalid size: 0x00007fb6a0114090 *** ======= Backtrace: ========= /lib64/libc.so.6(+0x7f93a)[0x7fb6a126393a] where: $ perl6 --version This is perl6 version 2015.07.1-928-g65d33be built on MoarVM version 2015.08-34-g113c3b5