The last lines before crash:

562eb075 => access_allowed: delete access to "cn=test-hotp-token-42,ou=Testing,dc=stroeder,dc=de" "oathFailureCount" requested 562eb075 => dn: [5] dc=stroeder,dc=de 562eb075 => acl_get: [5] matched 562eb075 => acl_get: [5] attr oathFailureCount 562eb075 => acl_mask: access to entry "cn=test-hotp-token-42,ou=Testing,dc=stroeder,dc=de", attr "oathFailureCount" requested 562eb075 => acl_mask: to all values by "cn=michael ströder+mail=michael@stroeder.com,ou=private,dc=stroeder,dc=de", (=0) 562eb075 <= check a_group_pat: cn=slapd admins,ou=groups,dc=stroeder,dc=de 562eb075 <= acl_mask: [1] applying manage(=mwrscxd) (stop) 562eb075 <= acl_mask: [1] mask: manage(=mwrscxd) 562eb075 => slap_access_allowed: delete access granted by manage(=mwrscxd) 562eb075 => access_allowed: delete access granted by manage(=mwrscxd) 562eb075 => access_allowed: result not in cache (oathFailureCount) 562eb075 => access_allowed: add access to "cn=test-hotp-token-42,ou=Testing,dc=stroeder,dc=de" "oathFailureCount" requested 562eb075 => dn: [5] dc=stroeder,dc=de 562eb075 => acl_get: [5] matched 562eb075 => acl_get: [5] attr oathFailureCount 562eb075 => acl_mask: access to entry "cn=test-hotp-token-42,ou=Testing,dc=stroeder,dc=de", attr "oathFailureCount" requested 562eb075 => acl_mask: to value by "cn=michael ströder+mail=michael@stroeder.com,ou=private,dc=stroeder,dc=de", (=0) 562eb075 <= check a_group_pat: cn=slapd admins,ou=groups,dc=stroeder,dc=de 562eb075 <= acl_mask: [1] applying manage(=mwrscxd) (stop) 562eb075 <= acl_mask: [1] mask: manage(=mwrscxd) 562eb075 => slap_access_allowed: add access granted by manage(=mwrscxd) 562eb075 => access_allowed: add access granted by manage(=mwrscxd) 562eb075 acl: internal mod entryCSN: modify access granted 562eb075 acl: internal mod modifiersName: modify access granted 562eb075 acl: internal mod modifyTimestamp: modify access granted 562eb075 mdb_modify_internal: increment oathFailureCount Segmentation fault