Hashcat is showing as exhausted for rule based mode

[penguinkeeper]

According to Hashcat, you're running at 2,693,600 hashes per second. With a wordlist that has 14,344,384 lines, that makes for 5.32 seconds, which is perfectly in line with the reported 6 seconds. Chick3nman's right and this is why SHA1 is so insecure, it's ridiculously fast. Try more rules or if you're certain it ends in 2020, try a bigger wordlist like the ones on weakpass.com