(gdb) run
Starting program: /home/dhylands/rustup-init
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
Program received signal SIGILL, Illegal instruction.
std::sys::imp::thread::guard::init () at /buildslave/rust-buildbot/slave/nightly-dist-rustc-linux/build/obj/../src/libstd/sys/unix/thread.rs:250
250	/buildslave/rust-buildbot/slave/nightly-dist-rustc-linux/build/obj/../src/libstd/sys/unix/thread.rs: No such file or directory.
(gdb) bt
#0  std::sys::imp::thread::guard::init () at /buildslave/rust-buildbot/slave/nightly-dist-rustc-linux/build/obj/../src/libstd/sys/unix/thread.rs:250
#1  std::rt::lang_start () at /buildslave/rust-buildbot/slave/nightly-dist-rustc-linux/build/obj/../src/libstd/rt.rs:43
#2  0x80075857 in main ()
(gdb)

Linux dave-Inspiron-8000 4.8.0-36-generic #36~16.04.1-Ubuntu SMP Sun Feb 5 09:39:41 UTC 2017 i686 i686 i686 GNU/Linux

dhylands@dave-Inspiron-8000:~$ cat /proc/cpuinfo
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 8
model name	: Pentium III (Coppermine)
stepping	: 6
microcode	: 0xb
cpu MHz		: 698.417
cache size	: 256 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
initial apicid	: 0
fdiv_bug	: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pse36 mmx fxsr sse eagerfpu
bugs		:
bogomips	: 1396.83
clflush size	: 32
cache_alignment	: 32
address sizes	: 36 bits physical, 32 bits virtual
power management: