torsocks popcon: [syscall] Unsupported syscall number 288

With torsocks 2.3 popcon gives:

# torsocks /etc/cron.daily/popularity-contest --crond                     
1546700136 WARNING torsocks[6199]: [syscall] Unsupported syscall number 288. Denying the call (in tsocks_syscall() at syscall.c:568

# torsocks --version
Torsocks 2.3.0

# uname -rmvo
4.9.0-8-686-pae #1 SMP Debian 4.9.130-2 (2018-10-27) i686 GNU/Linux

I assume the report is sent nevertheless because it is not reproducible calling it a second time.

This confirms that the former warnings for syscall 250 and 204 are gone.

https://sources.debian.org/src/linux/4.9.130-2/arch/x86/entry/syscalls/syscall_32.tbl/#L297

288 i386 keyctl sys_keyctl compat_sys_keyctl