golfish, 85 bytes

Result

AC

Duration

944ms

Code [DL]

00000000  d0 e2 80 01 e1 07 10 d1  e2 ed 20 11 dd db 80 20  |.......... .... |
00000010  12 d2 d5 01 e1 e2 ed 80  e2 c0 08 06 d1 00 e1 80  |................|
00000020  e0 e0 00 c0 ed ec e2 d1  d3 d5 d5 e2 80 c0 e3 07  |................|
00000030  11 e2 ed 00 20 01 12 12  e1 80 00 12 d2 d5 00 01  |.... ...........|
00000040  e1 e2 ed 20 80 e3 08 06  d1 10 ec c1 e1 80 12 c2  |... ............|
00000050  33 d1 e1 ff 06                                    |3....|
00000055

stdin

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         K                                        

stdout

                            1
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         11111111111111111111

stderr

/root/golfish/golfish.rb:280: warning: constant ::Fixnum is deprecated

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffe7fadc920 /* 9 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x563c3ee4f068 /* 9 vars */) = 0
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    execve("/usr/local/ruby-2.6.3/bin/ruby", ["/usr/local/ruby-2.6.3/bin/ruby", "/root/golfish/golfish.rb", "/volume/CODE"], 0x563c3ee4f090 /* 9 vars */) = 0
12    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=14, si_stime=3} ---
10    +++ exited with 0 +++