jdv@jdv-lap:~/rakudo$ time rak role
...
This type cannot unbox to a native integer: P6opaque, Scalar
in sub want-lines at /home/jdv/rakudo/install/share/perl6/site/sources/15066A5E79B965690BA65EFE60430F617F71BC47 (App::Rak) line 991
in sub rak at /home/jdv/rakudo/install/share/perl6/site/sources/15066A5E79B965690BA65EFE60430F617F71BC47 (App::Rak) line 609
in block at /home/jdv/rakudo/install/share/perl6/site/resources/0FFDA62CBE59FDD572FDAC1C05E0FDEB24029390 line 4
in sub MAIN at /home/jdv/rakudo/install/share/perl6/site/bin/rak line 3
in block at /home/jdv/rakudo/install/share/perl6/site/bin/rak line 1
real 0m2.199s
user 0m3.718s
sys 0m0.329s
jdv@jdv-lap:~/rakudo$
meanwhile
jdv@jdv-lap:~/rakudo$ time rak role > /dev/null
real 0m16.807s
user 0m23.311s
sys 0m1.240s
jdv@jdv-lap:~/rakudo$
jdv@jdv-lap:~/rakudo$ time rak role ... This type cannot unbox to a native integer: P6opaque, Scalar in sub want-lines at /home/jdv/rakudo/install/share/perl6/site/sources/15066A5E79B965690BA65EFE60430F617F71BC47 (App::Rak) line 991 in sub rak at /home/jdv/rakudo/install/share/perl6/site/sources/15066A5E79B965690BA65EFE60430F617F71BC47 (App::Rak) line 609 in block at /home/jdv/rakudo/install/share/perl6/site/resources/0FFDA62CBE59FDD572FDAC1C05E0FDEB24029390 line 4
in sub MAIN at /home/jdv/rakudo/install/share/perl6/site/bin/rak line 3
in block at /home/jdv/rakudo/install/share/perl6/site/bin/rak line 1
real 0m2.199s user 0m3.718s sys 0m0.329s jdv@jdv-lap:~/rakudo$
meanwhile
jdv@jdv-lap:~/rakudo$ time rak role > /dev/null
real 0m16.807s user 0m23.311s sys 0m1.240s jdv@jdv-lap:~/rakudo$