"Crashes" on Ubuntu 18.10 about isolate HOT 9 CLOSED

--- a/isolate.c
+++ b/isolate.c
@@ -814,7 +814,7 @@ run(char **argv)

   proxy_pid = clone(
     box_proxy,                 // Function to execute as the body of the new process
-    argv,                      // Pass our stack
+    (void*)((uintptr_t)argv & ~15),                    // Pass our stack, aligned to 16-bytes.
     SIGCHLD | CLONE_NEWIPC | (share_net ? 0 : CLONE_NEWNET) | CLONE_NEWNS | CLONE_NEWPID,
     argv);                     // Pass the arguments
   if (proxy_pid < 0)

pehrs@pehrs:~$ sudo /usr/local/bin/isolate --box-id=0 --cg --cg-timing --processes=128 --env=HOME=/ --env=PATH --env=LANG --dir=/usr= --dir=/usr/lib/ --dir=/etc/alternatives/ --dir=/usr/bin/ --dir=/usr/include/ --dir=/usr/local/lib/ --dir=/usr/share/pyshared/ --env=PYTHONDONTWRITEBYTECODE=1 --env=PYTHONIOENCODING=UTF-8 --dir=/src=/var/lib/kattis/run/subs/comp_158309_206449/compile:rw:noexec --quota=40960,40960  --init
/var/local/lib/isolate/0
pehrs@pehrs:~$ sudo strace /usr/local/bin/isolate --box-id=0 --cg --cg-timing --processes=128 --env=HOME=/ --env=PATH --env=LANG --dir=/usr= --dir=/usr/lib/ --dir=/etc/alternatives/ --dir=/usr/bin/ --dir=/usr/include/ --dir=/usr/local/lib/ --dir=/usr/share/pyshared/ --env=PYTHONDONTWRITEBYTECODE=1 --env=PYTHONIOENCODING=UTF-8 --dir=/src=/var/lib/kattis/run/subs/comp_158309_206449/compile:rw:noexec --stderr=/src/__stderr --meta=/var/lib/kattis/run/subs/comp_158309_206449/compile.meta_file --chdir=/src --time=60 --wall-time=120 --cg-mem=1048580 --run -- /usr/bin/python2 -m py_compile ./hello.py 2> strace.log

pehrs@pehrs:/tmp$ gdb /usr/local/bin/isolate core.2.isolate
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Reading symbols from /usr/local/bin/isolate...(no debugging symbols found)...done.
[New LWP 2]
Core was generated by `/usr/local/bin/isolate --box-id=0 --cg --cg-timing --processes=128 --env=HOME=/'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007ffff7c52cdd in _IO_str_init_static_internal (sf=sf@entry=0x7fffffffda28, ptr=ptr@entry=0x7fffffffdce8 "", size=size@entry=1023, 
    pstart=pstart@entry=0x7fffffffdce8 "") at strops.c:41
41	strops.c: No such file or directory.
(gdb)