Integer overflow detected in keyspace of mask

[baba]

What the hell are you trying to crack? There is almost no way you will ever be able to run a mask that large unless your custom character is like, 1 character. And even then, there must be a better way. A 64 character mask is absolutely not ideal or feasible for basically anything I can think of.

-m 2501 -1 abcdef0123456789 ?1??1?.......................