this error message is straight forward i think
ptxas application ptx input, line 9; fatal : Unsupported .version 7.6; current version is '7.5'
you could try
https://hashcat.net/beta/
and see wheter there is version 7.6 already supported
EDIT:
there are some old github issues where there are similar failures and sometimes the reason where outdated drivers, plz update to up2date 512 driver and see whether this failure still exists
ptxas application ptx input, line 9; fatal : Unsupported .version 7.6; current version is '7.5'
you could try
https://hashcat.net/beta/
and see wheter there is version 7.6 already supported
EDIT:
there are some old github issues where there are similar failures and sometimes the reason where outdated drivers, plz update to up2date 512 driver and see whether this failure still exists