Cannot run Debian in Termux

Just to summarize what is known so far. proot-rs does not currently work in termux (but can run proot-rs in the adb shell).

Two errors have been found so far.

Bad address The error is exactly the one you mentioned here: https://github.com/proot-me/proot-rs/issues/35#issuecomment-898981925
I tried testing in Termux on my Motorola G7, Android 10, and here is what I got:
```
./proot-rs --rootfs=./alpine --bind /dev:/dev --bind /proc:/proc
bash: ./proot-rs: Bad address
echo $?
126
```
The characteristic is that echo $? results in 126

The strange thing is that once I run again with RUST_LOG=trace (which will generate more log):
```
RUST_LOG=trace ./proot-rs --rootfs=./alpine --bind /dev:/dev --bind /proc:/proc
```
This error disappears and does not appear anymore, even after restarting termux. I no longer see any Bad address, and the exit code is no longer 126.

So I think it's a bug of termux.
Exit with code 159

This is the main error mentioned in current issue.

By setting RUST_LOG=trace, we could get more logs:

The logs show that the first tracee process was successfully loaded by our loader-shim, but was killed by a SIGSYS signal shortly after leaving from the loader-shim.

By analyzing the generated core dump file, it was found that the tracee was calling system call setgid32().

Since the problem did not occur when testing proot-rs in the adb shell, I think it may be related to seccomp.
```
➜  ~ adb shell
enchilada:/ $ whoami
shell
enchilada:/ $ cat /proc/self/status | grep Seccomp
Seccomp:        0
enchilada:/ $ cat /proc/`pidof com.termux`/status | grep Seccomp                                                                                                              
Seccomp:        2
```

proot-me / proot-rs

Cannot run Debian in Termux #62