You can clone with
HTTPS or Subversion.
compare_problem_number and compare_implementations fail to notice if a language implementation is not found. Instead it just looks like that language runs really fast. E.g,
Benchmarking EP#002 with 100 iterations
(warning: too few iterations for a reliable count)
Rate perl5/002/01.pl perl6/002/01.pl
perl5/002/01.pl 49.3/s -- -79%
perl6/002/01.pl 233/s 372% --