You haven't declared $channel and $dt (the latter is declared in a comment).

The missing regex $channel should be your first shot, if you've got that, you can use $1 to create $dt

This produces the required output but I'm not convinced that it does what is required.

• "last attempted" is actually the time of the first attempt in that period
• "attempts" is the number of additional failed attempts, if only one failure occurs it will be logged as 0 attempts.

#!/net/perl/5.10.0/bin/perl

use strict;
use warnings;

use 5.010_000;

use DateTime::Format::Strptime;

use Readonly;

Readonly my $delta => 60 * 60;

my %stats;

my $log_parser = qr{
    \A
    (?<time_stamp> \d{4}-\p{IsAlpha}{3}-\d\d [ ] \d\d:\d\d:\d\d )
    .* [ ] - [ ] id [ ] = [ ] (?<id> \d+ ),
    [ ] Status [ ] = [ ] (?<status> \w+ )
}msx;

my $date_parser = new DateTime::Format::Strptime(
    pattern  => '%Y-%b-%d %T',
    on_error => 'croak',
) or die "Can't create date parser: $!\n";

while ( my $line = <DATA> ) {
    if ( $line =~ /$log_parser/ ) {
        my ( $time_stamp, $id, $status ) = @+{qw(time_stamp id status)
+};
        next if $status eq 'success';
        my $date = $date_parser->parse_datetime($time_stamp);
            || $stats{$id}[-1][0]->subtract_datetime_absolute($date)->
+seconds
            > $delta )
        {
            push @{ $stats{$id} }, [ $date, $time_stamp, 0 ];
        }
        else {
            ++$stats{$id}[-1][2];
        }
    }
}

if ( scalar keys %stats ) {
    say 'ID           last attempted         attempts';
    say '=' x 44;
    foreach my $id ( sort keys %stats ) {
        foreach my $time ( @{ $stats{$id} } ) {
            printf "%s    %s   %8d\n", $id, @{$time}[ 1, 2 ];
        }
    }
}

__DATA__
2008-Feb-01 00:00:02 UTC (GMT +0000) - id = 000000001, Status = failed
2008-Feb-01 00:10:02 UTC (GMT +0000) - id = 000000002, Status = succes
+s
2008-Feb-01 00:20:02 UTC (GMT +0000) - id = 000000003, Status = failed
2008-Feb-01 00:30:02 UTC (GMT +0000) - id = 000000004, Status = succes
+s
2008-Feb-01 00:40:02 UTC (GMT +0000) - id = 000000001, Status = succes
+s
2008-Feb-01 00:50:02 UTC (GMT +0000) - id = 000000001, Status = succes
+s
2008-Feb-01 01:00:02 UTC (GMT +0000) - id = 000000001, Status = failed
2008-Feb-01 01:10:02 UTC (GMT +0000) - id = 000000007, Status = succes
+s
2008-Feb-01 01:20:02 UTC (GMT +0000) - id = 000000003, Status = failed
2008-Feb-01 01:30:02 UTC (GMT +0000) - id = 000000009, Status = succes
+s
[download]

ID           last attempted         attempts
============================================
000000001    2008-Feb-01 00:00:02          1
000000003    2008-Feb-01 00:20:02          1
[download]

When i execute this script, i got the following error

$ perl -wc a300.pl
Sequence (?<t...) not recognized in regex; marked by <-- HERE in m/
    \A
    (?<t <-- HERE ime_stamp> \d{4}-\p{IsAlpha}{3}-\d\d [ ] \d\d:\d\d:\
+d\d )
    .* [ ] - [ ] id [ ] = [ ] (?<id> \d+ ),
    [ ] Status [ ] = [ ] (?<status> \w+ )
/ at a300.pl line 14.
[download]

I'm surprised it didn't exit with an error message similar to

Perl v5.10.0 required--this is only v5.8.8, stopped at Perl-1.pl line 
+6.
BEGIN failed--compilation aborted at Perl-1.pl line 6.
[download]

Ahh your error occurred on line 14 whereas the regex in my script is on line 16, I guess you removed the use 5.010_000;

If you are running an older version of perl you'll need to remove the named captures & use regular captures. It's just removeing ?<name> and using numbered captures to initialize variables. You'll also need to replace the says with print ... "\n"