The non-existence of a production Perl 6 implementation after over a decade of people writing code makes me genuinely sad.
 Some Googling indicates that the project I'm thinking of is Pugs: http://en.wikipedia.org/wiki/Pugs
Pugs ended up succeeding in the sense that it produced that test suite, but it didn't succeed in that it relied on Audrey's presence--it never attracted a sufficient developer base to maintain it when she wasn't available.
Rakudo isn't anywhere near complete now, almost seven years later, and I believe Pugs passes no more than 30% of Rakudo's test suite.
It might be fair to say that the goalposts have moved in the intervening time, however.
The GNU Hurd.