Example of weird behavior when using regexes in a class

test.p6

use v6;

sub parse(Str $time-spec) returns Int {
    my regex hours {
        $<value>=(\d+)h
    }
    my regex minutes {
        $<value>=(\d+)m
    }
    my regex seconds {
        $<value>=(\d+)s
    }
    my regex timespec {
        <hours>?
        <minutes>?
        <seconds>?
    }

    if $time-spec ~~ /^<timespec>$/ {
        my ( $hours, $minutes, $seconds ) = map({
            my $value = $<timespec>{$_}[0]<value>;
            $value ~~ Match ?? $value.Int !! 0
        }, <hours minutes seconds>);

        return ($hours * 3_600) + ($minutes * 60) + $seconds;
    } else {
        die 'Failed to parse timespec!';
    }
}

class Timer {
    method parse(Str $time-spec) returns Int {
        my regex hours {
            $<value>=(\d+)h
        }
        my regex minutes {
            $<value>=(\d+)m
        }
        my regex seconds {
            $<value>=(\d+)s
        }
        my regex timespec {
            <hours>?
            <minutes>?
            <seconds>?
        }

        if $time-spec ~~ /^<timespec>$/ {
            my ( $hours, $minutes, $seconds ) = map({
                my $value = $<timespec>{$_}[0]<value>;
                $value ~~ Match ?? $value.Int !! 0
            }, <hours minutes seconds>);

            return ($hours * 3_600) + ($minutes * 60) + $seconds;
        } else {
            die 'Failed to parse timespec!';
        }
    }
}

say parse('10s');       # this works fine
say Timer.parse('10s'); # this fails with the following error:
#`(
Nominal type check failed for parameter ''; expected Timer but got Cursor instead
  in regex timespec at test.p6:42
  in method INTERPOLATE at src/gen/CORE.setting:10701
  in regex  at test.p6:48
  in method ACCEPTS at src/gen/CORE.setting:10800
  in method parse at test.p6:48
  in block  at test.p6:62
)