채점 중 예외가 발생했습니다.
익셉션: Unexpected monitor result:
{'returncode': 1, 'stderr': "lxc-execute: utils.c: safe_mount: 1284 No such file or directory - Mount of 'proc' onto '/usr/lib/x86_64-linux-gnu/lxc/proc' failed\nlxc-execute: conf.c: mount_entry: 2061 No such file or directory - failed to mount 'proc' on '/usr/lib/x86_64-linux-gnu/lxc/proc'\nlxc-execute: conf.c: lxc_setup: 4282 failed to setup the mount entries for 'sandbox-tmpzrsTz6'\nlxc-execute: start.c: do_start: 717 failed to setup the container\nlxc-execute: sync.c: __sync_wait: 51 invalid sequence number 1. expected 2\nlxc-execute: start.c: __lxc_start: 1121 failed to spawn 'sandbox-tmpzrsTz6'\n", 'stdout': ''}
cmdline: python monitor.py -i poly.in -o .stdout -e .stderr -m 77594624 -t 2 "python3 submission.py"
(empty stdout)
스택 트레이스:
Traceback (most recent call last):
File "judge/tasks.py", line 164, in judge_submission
problem.last_revision.memory_limit)
File "judge/languages/py3.py", line 20, in run
stdout=".stdout", stderr=".stderr")
File "judge/sandbox.py", line 268, in run
error)
Exception: Unexpected monitor result:
{'returncode': 1, 'stderr': "lxc-execute: utils.c: safe_mount: 1284 No such file or directory - Mount of 'proc' onto '/usr/lib/x86_64-linux-gnu/lxc/proc' failed\nlxc-execute: conf.c: mount_entry: 2061 No such file or directory - failed to mount 'proc' on '/usr/lib/x86_64-linux-gnu/lxc/proc'\nlxc-execute: conf.c: lxc_setup: 4282 failed to setup the mount entries for 'sandbox-tmpzrsTz6'\nlxc-execute: start.c: do_start: 717 failed to setup the container\nlxc-execute: sync.c: __sync_wait: 51 invalid sequence number 1. expected 2\nlxc-execute: start.c: __lxc_start: 1121 failed to spawn 'sandbox-tmpzrsTz6'\n", 'stdout': ''}
cmdline: python monitor.py -i poly.in -o .stdout -e .stderr -m 77594624 -t 2 "python3 submission.py"
(empty stdout)

python2로 짠 코드를 실행시키면 항상 이런 메시지와 함께 채점 실패가 나오네요, stdin, stdout으로는 input()과 print문을 사용하고 있습니다.