golfish, 12 bytes

Result

AC

Duration

918ms

Code [DL]

00000000  01 01 e6 da 05 c1 ed 21  01 c0 01 c1              |.......!....|
0000000c

stdin

515 551
172 772
899 693
995 696
288 613
247 473
199 793
791 318
722 254
887 155
265 693
715 558
635 331
566 446
885 525
821 167
687 831
278 667
123 884
437 734
611 223
357 576
632 139
977 763
732 191
544 189
399 997
424 983
121 543
722 225
125 353
676 676

stdout

5
7
9
5
8
7
9
1
2
7
5
5
3
4
5
1
7
6
8
7
2
7
2
7
2
4
9
4
1
2
5
6

stderr

/root/golfish/golfish.rb:280: warning: constant ::Fixnum is deprecated
/root/golfish/golfish.rb:79: warning: constant ::Fixnum is deprecated
/root/golfish/golfish.rb:80:in `chr': -1 out of char range (RangeError)
	from /root/golfish/golfish.rb:80:in `block in exec!'
	from /root/golfish/golfish.rb:49:in `loop'
	from /root/golfish/golfish.rb:49:in `exec!'
	from /root/golfish/golfish.rb:299:in `<main>'

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffdb3461e00 /* 9 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x560bb99a1028 /* 9 vars */ <unfinished ...>
12    execve("/usr/local/ruby-2.7.1/bin/ruby", ["/usr/local/ruby-2.7.1/bin/ruby", "/root/golfish/golfish.rb", "/volume/CODE"], 0x560bb99a1050 /* 9 vars */ <unfinished ...>
11    <... execve resumed>)             = 0
12    <... execve resumed>)             = 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    +++ exited with 1 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=1, si_utime=7, si_stime=2} ---
10    +++ exited with 1 +++