Here is a simple example:
$ ./perl6-j -e 'try { die "foo" }; say $!.perl; say $!.gist'
X::AdHoc.new(payload => "foo")
Died
in block <unit> at -e line 1
$ $ ./perl6-m -e 'try { die "foo" }; say $!.perl; say $!.gist'
X::AdHoc.new(payload => "foo")
foo
in block <unit> at -e line 1
